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Meenu PC, Kothoori NPS, Dahiya P, Mandal TK, Roy S. Engineering Lattice Strain in Co-Doped NiMoO 4 for boosting Methanol Oxidation Reaction. Chem Asian J 2025; 20:e202401520. [PMID: 39901744 PMCID: PMC12005583 DOI: 10.1002/asia.202401520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2024] [Revised: 01/22/2025] [Accepted: 02/03/2025] [Indexed: 02/05/2025]
Abstract
Nickel-based molybdates have attracted considerable attention owing to their distinctive isomorphous structure. In this study, pristine NiMoO4 and Co-doped Ni1-xCoxMoO4 were synthesized and investigated for their electrocatalytic activity in methanol oxidation and methanol-assisted water splitting reactions. Through a comprehensive exploration of the structure-property relationship, it was found that the optimal coexistence of α and β molybdate phases, induced by Co doping, led to lattice strain and facilitated the presence of essential catalytic descriptors such as higher oxidation states of Ni and surface oxygen vacancies within the lattice. These factors contributed to the enhanced electrocatalytic activity of Ni0.7Co0.3MoO4 in methanol oxidation and hydrogen evolution reaction. Detailed kinetic studies were conducted to further elucidate the mechanisms involved. Overall, these findings highlight the promising potential of Ni0.7Co0.3MoO4 as an effective catalyst for electrochemical methanol upgrading in conjunction with water splitting, with implications for sustainable energy conversion technologies.
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Affiliation(s)
| | | | - Preeti Dahiya
- Department of ChemistryIndian Institute of Technology RoorkeeRoorkee247 667India
| | - Tapas Kumar Mandal
- Department of ChemistryIndian Institute of Technology RoorkeeRoorkee247 667India
- Centre for NanotechnologyIndian Institute of Technology RoorkeeRoorkee247 667India
| | - Sounak Roy
- Department of ChemistryBirla Institute of Technology and Science PilaniHyderabad CampusHyderabad500078India
- Department of Chemistry and Materials Centre for Sustainable Energy & EnvironmentBirla Institute of Technology and Science (BITS) PilaniHyderabad CampusHyderabad500078India
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2
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Chen T, Han X, Wang Z, Li C, Li M, Lan X, Ning Y, Wang J, Liu P. Polyoxometalate Etching of NMO@NF for Highly Efficient Oxygen Evolution Reaction in Water Splitting. Int J Mol Sci 2025; 26:3107. [PMID: 40243779 PMCID: PMC11988611 DOI: 10.3390/ijms26073107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2025] [Revised: 03/15/2025] [Accepted: 03/19/2025] [Indexed: 04/18/2025] Open
Abstract
In this study, PTA&PMA/NiMoO4@NF was synthesized on nickel foam through wet chemical etching to promote the kinetics of the oxygen evolution reaction (OER) effectively. OER benefits from two cationic (Ni and Mo) defects and the optimized electronic configuration of PTA&PMA/NiMoO4@NF. Thus, it only needs 200 mV to reach the current density of 10 mA cm-2 in 1.0 mol/L of KOH. This value is nearly 100 mV lower than the value needed by pure NiMoO4. After being used as an anode for water splitting in an alkaline solution, the as-obtained catalyst can operate at a current density of 10 mA cm-2 for 24 h of good stability. The synthesis strategy adopted in this study can provide an effective, low-cost, simple, and convenient strategy for improving the OER electrocatalytic performance of other transition metal oxides.
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Affiliation(s)
- Ting Chen
- Guangxi Key Laboratory for Polysaccharide Materials and Modifications, School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning 530006, China; (T.C.); (X.H.); (C.L.); (M.L.); (Y.N.); (J.W.)
| | - Xiang Han
- Guangxi Key Laboratory for Polysaccharide Materials and Modifications, School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning 530006, China; (T.C.); (X.H.); (C.L.); (M.L.); (Y.N.); (J.W.)
| | - Zefen Wang
- Guangxi Autonomous Region Center for Analysis and Test Research, Nanning 530022, China;
| | - Chaoying Li
- Guangxi Key Laboratory for Polysaccharide Materials and Modifications, School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning 530006, China; (T.C.); (X.H.); (C.L.); (M.L.); (Y.N.); (J.W.)
| | - Mei Li
- Guangxi Key Laboratory for Polysaccharide Materials and Modifications, School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning 530006, China; (T.C.); (X.H.); (C.L.); (M.L.); (Y.N.); (J.W.)
| | - Xiongdiao Lan
- Guangxi Key Laboratory for Polysaccharide Materials and Modifications, School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning 530006, China; (T.C.); (X.H.); (C.L.); (M.L.); (Y.N.); (J.W.)
| | - Yingying Ning
- Guangxi Key Laboratory for Polysaccharide Materials and Modifications, School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning 530006, China; (T.C.); (X.H.); (C.L.); (M.L.); (Y.N.); (J.W.)
| | - Jingxin Wang
- Guangxi Key Laboratory for Polysaccharide Materials and Modifications, School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning 530006, China; (T.C.); (X.H.); (C.L.); (M.L.); (Y.N.); (J.W.)
| | - Pengru Liu
- Guangxi Key Laboratory for Polysaccharide Materials and Modifications, School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning 530006, China; (T.C.); (X.H.); (C.L.); (M.L.); (Y.N.); (J.W.)
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3
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Sathya S, Kumar RS, Garcia-Ballesteros S, Bella F, Yoo DJ, Stephan AM. Interplay Between Composition and Cycling Performance of Pre-Lithiated SiO x-Si-C Composite Anodes for Lithium-Sulfur Full Cells. MATERIALS (BASEL, SWITZERLAND) 2025; 18:1053. [PMID: 40077279 PMCID: PMC11901105 DOI: 10.3390/ma18051053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2025] [Revised: 02/14/2025] [Accepted: 02/24/2025] [Indexed: 03/14/2025]
Abstract
Although silicon-based anodes have been identified as a potential alternative to conventional graphite anodes, the huge volume change (approximately 300%) that occurs in silicon while cycling still impedes this system from practical applications. In the case of silicon-suboxide (SiOx)-based anode materials, both Li2O and LiSiO4 are formed during the initial lithiation processes and act as a natural volume buffer matrix to accommodate volume changes and the formation of a stable SEI layer, which improves the cyclability and capacity retention. In this study, a series of SiOx/Si/C-based electrodes composed of different amorphous SiOx, Si, and graphitic carbon contents were prepared. Among the various investigated compositions, the electrode with a ratio of SiOx-Si-C equal to 70:12.5:12.5 was found to be optimal in terms of discharge capacity. This promising electrode was pre-lithiated prior to cycling. Finally, 2032-type lithium-sulfur (Li-S) coin cells composed of a S-C/SiOx-Si-C (pre-lithiated) configuration were assembled and their cycling performances are reported.
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Affiliation(s)
- Swamickan Sathya
- Electrochemical Power Sources Division, CSIR-Central Electrochemical Research Institute, Karaikudi 630003, India;
| | - Ramasamy Santhosh Kumar
- Department of Life Science, Department of Energy Storage/Conversion Engineering of Graduate School (BK21 FOUR), Hydrogen and Fuel Cell Research Center, Jeonbuk National University, 567 Baekje-daero, Jeonju 54896, Jeollabuk-do, Republic of Korea;
| | - Sara Garcia-Ballesteros
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca Degli Abruzzi 24, 10129 Torino, Italy;
| | - Federico Bella
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca Degli Abruzzi 24, 10129 Torino, Italy;
| | - Dong Jin Yoo
- Department of Life Science, Department of Energy Storage/Conversion Engineering of Graduate School (BK21 FOUR), Hydrogen and Fuel Cell Research Center, Jeonbuk National University, 567 Baekje-daero, Jeonju 54896, Jeollabuk-do, Republic of Korea;
| | - Arul Manuel Stephan
- Electrochemical Power Sources Division, CSIR-Central Electrochemical Research Institute, Karaikudi 630003, India;
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4
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Huang C, Jiang Z, Meng D, Li X, Zeng J, Wu X, Liu M, Song K, Liu F, Wei A, Guo L, Dong T, Zou M, Zhang W. Cobalt substitution-induced π-donation in NiMoO 4 for enhanced electrochemical charge storage. J Colloid Interface Sci 2025; 677:194-204. [PMID: 39142160 DOI: 10.1016/j.jcis.2024.08.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2024] [Revised: 08/01/2024] [Accepted: 08/06/2024] [Indexed: 08/16/2024]
Abstract
NiMoO4 (NM) has garnered significant attention due to its rich d-orbital electronic structure and multivalent electroactive cations. However, the inherently low electrical conductivity of NM limits its reaction kinetics. Herein, cobalt-substituted NM (Co-NM) nanorods were prepared via a hydrothermal reaction followed by subsequent thermal treatment. The incorporation of Ni-O-Co configurations stimulates an enhanced π-donation effect of the Co-O bond, facilitating the hybridization between the O 2p and Co 3d orbitals and thereby boosting charge transfer kinetics during electrochemical processes. The optimized 10 %Co-NM nanorods demonstrated a remarkable specific capacity of 557.8 C·g-1 at 1 A·g-1. Furthermore, an asymmetric supercapacitor constructed with 10 %Co-NM as the positive electrode and FeOOH as the negative electrode, achieved a significant energy density of 63.58 Wh·kg-1 at a power density of 805.38 W·kg-1. Thus, our work provides new insights into the rational design of stable bridging configurations to significantly improve electrochemical reaction kinetics.
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Affiliation(s)
- Chengxiang Huang
- Key Laboratory of Automobile Materials MOE, and School of Materials Science & Engineering, and Electron Microscopy Center, and International Center of Future Science, and Jilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy Materials, Jilin University, Changchun 130012, China
| | - Zhou Jiang
- Key Laboratory of Automobile Materials MOE, and School of Materials Science & Engineering, and Electron Microscopy Center, and International Center of Future Science, and Jilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy Materials, Jilin University, Changchun 130012, China
| | - Detian Meng
- Key Laboratory of Automobile Materials MOE, and School of Materials Science & Engineering, and Electron Microscopy Center, and International Center of Future Science, and Jilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy Materials, Jilin University, Changchun 130012, China
| | - Xiujuan Li
- Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130025, China.
| | - Jianrong Zeng
- Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, China
| | - Xiangyu Wu
- Key Laboratory of Automobile Materials MOE, and School of Materials Science & Engineering, and Electron Microscopy Center, and International Center of Future Science, and Jilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy Materials, Jilin University, Changchun 130012, China
| | - Meiqi Liu
- Key Laboratory of Automobile Materials MOE, and School of Materials Science & Engineering, and Electron Microscopy Center, and International Center of Future Science, and Jilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy Materials, Jilin University, Changchun 130012, China
| | - Kexin Song
- Key Laboratory of Automobile Materials MOE, and School of Materials Science & Engineering, and Electron Microscopy Center, and International Center of Future Science, and Jilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy Materials, Jilin University, Changchun 130012, China
| | - Fuxi Liu
- Key Laboratory of Automobile Materials MOE, and School of Materials Science & Engineering, and Electron Microscopy Center, and International Center of Future Science, and Jilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy Materials, Jilin University, Changchun 130012, China
| | - Aofei Wei
- Key Laboratory of Automobile Materials MOE, and School of Materials Science & Engineering, and Electron Microscopy Center, and International Center of Future Science, and Jilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy Materials, Jilin University, Changchun 130012, China
| | - Longyu Guo
- Key Laboratory of Automobile Materials MOE, and School of Materials Science & Engineering, and Electron Microscopy Center, and International Center of Future Science, and Jilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy Materials, Jilin University, Changchun 130012, China
| | - Taowen Dong
- Key Laboratory of Automobile Materials MOE, and School of Materials Science & Engineering, and Electron Microscopy Center, and International Center of Future Science, and Jilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy Materials, Jilin University, Changchun 130012, China
| | - Meng Zou
- Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130025, China.
| | - Wei Zhang
- Key Laboratory of Automobile Materials MOE, and School of Materials Science & Engineering, and Electron Microscopy Center, and International Center of Future Science, and Jilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy Materials, Jilin University, Changchun 130012, China.
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5
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Su C, Hilal M, Yang F, Xu X, Zhang C, Guo S, Zhang J, Cai Z, Yuan H, Xie W. Enhanced Energy Storage Performance through Controlled Composition and Synthesis of 3D Mixed Metal-Oxide Microspheres. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:825. [PMID: 38786782 PMCID: PMC11123681 DOI: 10.3390/nano14100825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 04/26/2024] [Accepted: 04/30/2024] [Indexed: 05/25/2024]
Abstract
Binary transition metal oxide complexes (BTMOCs) in three-dimensional (3D) layered structures show great promise as electrodes for supercapacitors (SCs) due to their diverse oxidation states, which contribute to high specific capacitance. However, the synthesis of BTMOCs with 3D structures remains challenging yet crucial for their application. In this study, we present a novel approach utilizing a single-step hydrothermal technique to fabricate flower-shaped microspheres composed of a NiCo-based complex. Each microsphere consists of nanosheets with a mesoporous structure, enhancing the specific surface area to 23.66 m2 g-1 and facilitating efficient redox reactions. When employed as the working electrode for supercapacitors, the composite exhibits remarkable specific capacitance, achieving 888.8 F g-1 at 1 A g-1. Furthermore, it demonstrates notable electrochemical stability, retaining 52.08% capacitance after 10,000 cycles, and offers a high-power density of 225 W·kg-1, along with an energy density of 25 Wh·kg-1, showcasing its potential for energy storage applications. Additionally, an aqueous asymmetric supercapacitor (ASC) was assembled using NiCo microspheres-based complex and activated carbon (AC). Remarkably, the NiCo microspheres complex/AC configuration delivers a high specific capacitance of 250 F g-1 at 1 A g-1, with a high energy density of 88 Wh kg-1, for a power density of 800 W kg-1. The ASC also exhibits excellent long-term cyclability with 69% retention over 10,000 charge-discharge cycles. Furthermore, a series of two ASC devices demonstrated the capability to power commercial blue LEDs for a duration of at least 40 s. The simplicity of the synthesis process and the exceptional performance exhibited by the developed electrode materials hold considerable promise for applications in energy storage.
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Affiliation(s)
- Chongjie Su
- College of Electronics and Information, University-Industry Joint Center for Ocean Observation and Broadband Communication, Qingdao University, Qingdao 266071, China; (C.S.); (F.Y.); (X.X.); (C.Z.); (S.G.); (J.Z.)
| | - Muhammad Hilal
- Department of Semiconductor Systems Engineering, Sejong University, Seoul 05006, Republic of Korea;
| | - Fan Yang
- College of Electronics and Information, University-Industry Joint Center for Ocean Observation and Broadband Communication, Qingdao University, Qingdao 266071, China; (C.S.); (F.Y.); (X.X.); (C.Z.); (S.G.); (J.Z.)
| | - Xinda Xu
- College of Electronics and Information, University-Industry Joint Center for Ocean Observation and Broadband Communication, Qingdao University, Qingdao 266071, China; (C.S.); (F.Y.); (X.X.); (C.Z.); (S.G.); (J.Z.)
| | - Chao Zhang
- College of Electronics and Information, University-Industry Joint Center for Ocean Observation and Broadband Communication, Qingdao University, Qingdao 266071, China; (C.S.); (F.Y.); (X.X.); (C.Z.); (S.G.); (J.Z.)
| | - Shuoyu Guo
- College of Electronics and Information, University-Industry Joint Center for Ocean Observation and Broadband Communication, Qingdao University, Qingdao 266071, China; (C.S.); (F.Y.); (X.X.); (C.Z.); (S.G.); (J.Z.)
| | - Junning Zhang
- College of Electronics and Information, University-Industry Joint Center for Ocean Observation and Broadband Communication, Qingdao University, Qingdao 266071, China; (C.S.); (F.Y.); (X.X.); (C.Z.); (S.G.); (J.Z.)
| | - Zhicheng Cai
- Department of Semiconductor Systems Engineering, Sejong University, Seoul 05006, Republic of Korea;
| | - Huimin Yuan
- College of Physics and Electronic Engineering, Qilu Normal University, Ji’nan 250200, China
| | - Wanfeng Xie
- College of Electronics and Information, University-Industry Joint Center for Ocean Observation and Broadband Communication, Qingdao University, Qingdao 266071, China; (C.S.); (F.Y.); (X.X.); (C.Z.); (S.G.); (J.Z.)
- Department of Physics, Dongguk University, Seoul 04620, Republic of Korea
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6
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Wang Z, Lian Y, Zhu X, Wang Q. MOF-Mediated Construction of NiCoMn-LDH Nanoflakes Assembled Co(OH)F Nanorods for Improved Supercapacitive Performance. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:573. [PMID: 38607108 PMCID: PMC11013320 DOI: 10.3390/nano14070573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 03/19/2024] [Accepted: 03/24/2024] [Indexed: 04/13/2024]
Abstract
The application of transition metal hydroxides has long been plagued by its poor conductivity and stability as well as severe aggregation tendency. In this paper, a novel hierarchical core-shell architecture, using an F-doped Co(OH)2 nanorod array (Co(OH)F) as the core and Mn/Ni co-doped Co(OH)2 nanosheets (NiCoMn-LDH) as the shell, was constructed via an MOF-mediated in situ generation method. The obtained Co(OH)F@ NiCoMn-LDH composites exhibited excellent supercapacitive performance with large specific capacitance as well as improved rate capability and long-term stability. The effect of the Ni/Mn ratio on the supercapacitive performance and energy storage kinetics was systematically investigated and the related mechanism was revealed.
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Affiliation(s)
| | | | - Xinde Zhu
- Key Laboratory of Liquid-Solid Structural Evolution and Processing of Materials of Ministry of Education, School of Materials Science and Engineering, Shandong University, Jinan 250061, China; (Z.W.)
| | - Qi Wang
- Key Laboratory of Liquid-Solid Structural Evolution and Processing of Materials of Ministry of Education, School of Materials Science and Engineering, Shandong University, Jinan 250061, China; (Z.W.)
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7
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Sun B, Wang S, Zhang M. One-Dimensional Nickel Molybdate Nanostructures with Enhanced Supercapacitor Performance. Polymers (Basel) 2023; 15:4538. [PMID: 38231943 PMCID: PMC10708311 DOI: 10.3390/polym15234538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 11/23/2023] [Accepted: 11/24/2023] [Indexed: 01/19/2024] Open
Abstract
One-dimensional NiMoO4 nanofibers were successfully prepared by electrospinning and high-temperature calcination. The supercapacitor performance tests were conducted on the prepared materials in a three-electrode system, and it was found that the calcination temperature during the preparation of the fibers seriously affects the final morphology and electrochemical performance of the obtained samples. The sample with a calcination temperature of 500 °C has better performance, its specific capacitance can reach 1947 F g-1, and the retention rate is 82.35% after 3000 cycles of constant current charging-discharging. The improvement of electrochemical performance is primarily on account of the unique one-dimensional nanostructure of the material, which can both enhance the charge transfer efficiency and effectively increase the speed of electrolyte ion diffusion.
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Affiliation(s)
- Baodong Sun
- College of Teacher Education, Harbin Normal University, Harbin 150025, China
| | - Shaomin Wang
- Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, China
| | - Mingyi Zhang
- Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, China
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8
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Vattikuti SVP, Goud JP, Rosaiah P, Prasad PR, Tighezza AM, Shim J. Enhanced Sunlight-Powered Photocatalysis and Methanol Oxidation Activities of Co 3O 4-Embedded Polymeric Carbon Nitride Nanostructures. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2508. [PMID: 37764537 PMCID: PMC10534687 DOI: 10.3390/nano13182508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 09/01/2023] [Accepted: 09/05/2023] [Indexed: 09/29/2023]
Abstract
The contamination of water by organic substances poses a significant global challenge. To address these pressing environmental and energy concerns, this study emphasizes the importance of developing effective photocatalysts powered by sunlight. In this research, we achieved the successful synthesis of a novel photocatalyst comprised of polymeric carbon nitride (CN) nanosheets embedded with Co3O4 material, denoted as CN-CO. The synthesis process involved subjecting the mixture to 500 °C for 10 h in a muffle furnace. Structural and morphological analyses confirmed the formation of CN-CO nanostructures, which exhibited remarkable enhancements in photocatalytic activity for the removal of methylene blue (MB) pollutants under replicated sunlight. After 90 min of exposure, the degradation rate reached an impressive 98.9%, surpassing the degradation rates of 62.3% for pure CN and 89.32% for pure Co3O4 during the same time period. This significant improvement can be attributed to the exceptional light captivation capabilities and efficient charge separation abilities of the CN-CO nanostructures. Furthermore, the CN-CO nanostructures demonstrated impressive photocurrent density-time (j-t) activity under sunlight, with a photocurrent density of 2.51 μA/cm2 at 0.5 V. The CN-CO nanostructure exhibited excellent methanol oxidation reaction (MOR) activity with the highest current density of 83.71 mA/cm2 at an optimal 2 M methanol concentration, benefiting from the synergy effects of CN and CO in the nanostructure. Overall, this study presents a straightforward and effective method for producing CN-based photocatalysts decorated with semiconductor nanosized materials. The outcomes of this research shed light on the design of nanostructures for energy-related applications, while also providing insights into the development of efficient photocatalytic materials for addressing environmental challenges.
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Affiliation(s)
| | - J. Pundareekam Goud
- Department of Physics, Koneru Lakshmaiah Education Foundation, Bowrampet, Hyderabad 500043, Telangana, India
| | - P. Rosaiah
- School of Mechanical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
- Department of Physics, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences (SIMATS), Thandalam, Chennai 602105, Tamil Nadu, India
| | - P. Reddy Prasad
- Department of Chemistry, Institute of Aeronautical Engineering, Hyderabad 500043, Telangana, India
| | - Ammar M. Tighezza
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Jaesool Shim
- School of Mechanical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea
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9
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Liu N, Wu R, Liu Y, Liu Y, Deng P, Li Y, Du Y, Cheng Y, Zhuang Z, Kang Z, Li H. Oxygen Vacancy Engineering of Fe-Doped NiMoO 4 for Electrocatalytic N 2 Fixation to NH 3. Inorg Chem 2023; 62:11990-12000. [PMID: 37462358 DOI: 10.1021/acs.inorgchem.3c01467] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/01/2023]
Abstract
Electrochemical nitrogen reduction reaction (NRR) is a promising method for ammonia synthesis under ambient conditions. However, the NRR performance is limited to an extremely strong N≡N bond in N2 and the competing hydrogen evolution reaction. Introducing oxygen vacancies (OVs) has been considered as a forceful means to accelerate the sluggish NRR reaction kinetics. Herein, we reported the design of Fe-doped NiMoO4 catalysts for NRR. Fe doping can increase the amount of OVs in the catalyst and contribute to lattice strain enhancement, thereby leading to the improvement of the electron transport rate and catalytic active for NRR. In 0.1 M Na2SO4 solution, the 5% Fe-NiMoO4 catalyst achieves a NH3 yield rate of 15.36 μg h-1 mgcat.-1 and a Faradaic efficiency of 26.85% under -0.5 V versus RHE. Furthermore, the 5% Fe-NiMoO4 catalyst exhibits excellent stability (up to 13 h) during the reaction.
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Affiliation(s)
- Naiyun Liu
- Institute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Ruqiang Wu
- Institute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Yixian Liu
- Institute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Yunliang Liu
- Institute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
- Guangxi Key Laboratory of Electrochemical Energy Materials, Guangxi University, Nanning 530004, China
| | - Peiji Deng
- Institute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Yaxi Li
- Institute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Yongchao Du
- Institute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Yuanyuan Cheng
- Institute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Zechao Zhuang
- Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United States
| | - Zhenhui Kang
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Soochow University, Suzhou 215123, China
| | - Haitao Li
- Institute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
- Guangxi Key Laboratory of Electrochemical Energy Materials, Guangxi University, Nanning 530004, China
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10
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Peng W, Yuan Y, Huang C, Wu Y, Xiao Z, Zhan G. Ru and Se Co-Doped Cobalt Hydroxide Electrocatalyst for Efficient Hydrogen Evolution Reactions. Molecules 2023; 28:5736. [PMID: 37570706 PMCID: PMC10420253 DOI: 10.3390/molecules28155736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 07/21/2023] [Accepted: 07/25/2023] [Indexed: 08/13/2023] Open
Abstract
The development of efficient electrocatalysts for hydrogen evolution reactions is an extremely important area for the development of green and clean energy. In this work, a precursor material was successfully prepared via electrodeposition of two doping elements to construct a co-doped cobalt hydroxide electrocatalyst (Ru-Co(OH)2-Se). This approach was demonstrated to be an effective way to improve the performance of the hydrogen evolution reaction (HER). The experimental results show that the material exhibited a smaller impedance value and a larger electrochemically active surface area. In the HER process, the overpotential was only 109 mV at a current density of 10 mA/cm2. In addition, the doping of selenium and ruthenium effectively prevented the corrosion of the catalysts, with the (Ru-Co(OH)2-Se) material showing no significant reduction in the catalytic performance after 50 h. This synergistic approach through elemental co-doping demonstrated good results in the HER process.
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Affiliation(s)
| | | | | | | | | | - Guanghui Zhan
- State Key Laboratory of Marine Resource Utilization in South China Sea, School of Materials Science and Engineering, Hainan University, Haikou 570228, China; (W.P.); (Y.Y.); (C.H.); (Y.W.); (Z.X.)
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11
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Panmand R, Sethi Y, Jha A, Kale B. The synthesis and super capacitive characterization of microwave-assisted highly crystalline α-Fe 2O 3/Fe 3O 4 nanoheterostructures. RSC Adv 2023; 13:20951-20957. [PMID: 37441035 PMCID: PMC10334874 DOI: 10.1039/d3ra01967e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Accepted: 06/23/2023] [Indexed: 07/15/2023] Open
Abstract
A facile microwave-assisted solvothermal process for the synthesis of narrow-size distributed α-Fe2O3, α-Fe2O3/Fe3O4, and Fe3O4 nanostructures was demonstrated using PVP as a surfactant. During the reaction, the influence of the reaction media, such as the mixture of ethylene glycol and water on the formation of α-Fe2O3, α-Fe2O3/Fe3O4, and Fe3O4 was systematically studied. Interestingly, pure aqueous medicated solvothermal reaction conferred phase pure rhombohedral Fe2O3 (hematite) and linearly upsurging the formation of cubic Fe3O4 (magnetite) with the increasing concentration of EG and further, in pure EG, it deliberated cubic Fe3O4. FESEM and FETEM images of α-Fe2O3/Fe3O4 nano heterostructure clearly showed the nanosized Fe3O4 particles of 4-6 nm decorated onto Fe2O3 nanoparticles. Further, the electrochemical properties of α-Fe2O3, α-Fe2O3/Fe3O4, and Fe3O4 nanoparticles were investigated with galvanostatic charge-discharge and cyclic voltammetry measurements using a 3-electrode system. The findings show that their specific capacitances are linked to the type of iron oxide. More significantly, the α-Fe2O3/Fe3O4 nanoheterostructure exhibited the utmost capacitance of 165 F g-1, which is greater than that of pristine α-Fe2O3 and Fe3O4. Enhancement in the electrochemical performance was found due to the improved charge transfer that occurred at the interface of the nanoheterostructure. The nanoparticles of Fe3O4 deposited on the Fe2O3 increased the active sites, which accelerated the process of adsorption and desorption of ions, thereby enhancing the interface-assisted charge transfer and reducing the internal resistance, which is ultimately responsible for enhanced capacitance. Such heterostructures of nano iron oxide may fulfill the requirements of electrodes in supercapacitors.
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Affiliation(s)
- Rajendra Panmand
- Nanocrystalline Materials Division Centre for Materials for Electronics Technology (CMET) Panchawati, Off Pashan Road Pune 411007 India
| | - Yogesh Sethi
- Nanocrystalline Materials Division Centre for Materials for Electronics Technology (CMET) Panchawati, Off Pashan Road Pune 411007 India
| | - Animesh Jha
- School of Chemical and Process Engineering, University of Leeds Leeds LS2 9JT UK
| | - Bharat Kale
- Nanocrystalline Materials Division Centre for Materials for Electronics Technology (CMET) Panchawati, Off Pashan Road Pune 411007 India
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12
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Osman SH, Kamarudin SK, Basri S, Karim NA. Potential of 3D Hierarchical Porous TiO 2-Graphene Aerogel (TiO 2-GA) as Electrocatalyst Support for Direct Methanol Fuel Cells. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1819. [PMID: 37368249 DOI: 10.3390/nano13121819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 04/18/2023] [Accepted: 04/24/2023] [Indexed: 06/28/2023]
Abstract
Fuel cells have already demonstrated their potential for green energy generation. However, the low reaction performance becomes an obstacle in terms of large-scale commercial manufacturing. Accordingly, this work focuses on a new unique fabrication of three-dimensional pore hierarchy TiO2-graphene aerogel (TiO2-GA) supporting PtRu catalyst for anodic catalyst direct methanol fuel cell, which is facile, ecologically benign, and economical. In this work, a hydrothermal technique was used, followed by a freeze-drying technique and a microwave-assisted ethylene reduction technique. The structural properties of the studied materials were confirmed by UV/visible spectroscopy, XRD, Raman spectrum, FESEM TEM, and XPS. Based on existing structural advantages, the performance of PtRu/TiO2-GA has been investigated on DMFC anode catalysts. Furthermore, electrocatalytic stability performance with the same loading (~20%) was compared to commercial PtRu/C. Experimental outcomes show that the TiO2-GA support offered a significantly high surface area value of 68.44 m2g-1, mass activity/specific activity (608.17 mAmg-1/0.45 mA/cm2PtRu) that is higher than commercial PtRu/C (79.11 mAmg-1/0.19 mA/cm2PtRu). In passive DMFC mode, PtRu/TiO2-GA showed a maximum power density of 3.1 mW cm-2, which is 2.6 times higher than that of the PtRu/C commercial electrocatalyst. This suggests that PtRu/TiO2-GA has a promising possibility for methanol oxidation and may be used as an anodic element in DMFC.
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Affiliation(s)
- Siti Hasanah Osman
- Fuel Cell Institute, Universiti Kebangsaan Malaysia, UKM, Bangi 43600, Selangor, Malaysia
| | - Siti Kartom Kamarudin
- Fuel Cell Institute, Universiti Kebangsaan Malaysia, UKM, Bangi 43600, Selangor, Malaysia
- Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, UKM, Bangi 43600, Selangor, Malaysia
| | - Sahriah Basri
- Fuel Cell Institute, Universiti Kebangsaan Malaysia, UKM, Bangi 43600, Selangor, Malaysia
| | - Nabila A Karim
- Fuel Cell Institute, Universiti Kebangsaan Malaysia, UKM, Bangi 43600, Selangor, Malaysia
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13
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Simonenko TL, Simonenko NP, Gorobtsov PY, Simonenko EP, Kuznetsov NT. Microplotter Printing of a Miniature Flexible Supercapacitor Electrode Based on Hierarchically Organized NiCo 2O 4 Nanostructures. MATERIALS (BASEL, SWITZERLAND) 2023; 16:4202. [PMID: 37374386 DOI: 10.3390/ma16124202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 06/01/2023] [Accepted: 06/04/2023] [Indexed: 06/29/2023]
Abstract
The hydrothermal synthesis of a nanosized NiCo2O4 oxide with several levels of hierarchical self-organization was studied. Using X-ray diffraction analysis (XRD) and Fourier-transform infrared (FTIR) spectroscopy, it was determined that under the selected synthesis conditions, a nickel-cobalt carbonate hydroxide hydrate of the composition M(CO3)0.5(OH)·0.11H2O (where M-Ni2+ and Co2+) is formed as a semi-product. The conditions of semi-product transformation into the target oxide were determined by simultaneous thermal analysis. It was found by means of scanning electron microscopy (SEM) that the main powder fraction consists of hierarchically organized microspheres of 3-10 μm in diameter, and individual nanorods are observed as the second fraction of the powder. Nanorod microstructure was further studied by transmission electron microscopy (TEM). A hierarchically organized NiCo2O4 film was printed on the surface of a flexible carbon paper (CP) using an optimized microplotter printing technique and functional inks based on the obtained oxide powder. It was shown by XRD, TEM, and atomic force microscopy (AFM) that the crystalline structure and microstructural features of the oxide particles are preserved when deposited on the surface of the flexible substrate. It was found that the obtained electrode sample is characterized by a specific capacitance value of 420 F/g at a current density of 1 A/g, and the capacitance loss during 2000 charge-discharge cycles at 10 A/g is 10%, which indicates a high material stability. It was established that the proposed synthesis and printing technology enables the efficient automated formation of corresponding miniature electrode nanostructures as promising components for flexible planar supercapacitors.
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Affiliation(s)
- Tatiana L Simonenko
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky Pr., Moscow 119991, Russia
| | - Nikolay P Simonenko
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky Pr., Moscow 119991, Russia
| | - Philipp Yu Gorobtsov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky Pr., Moscow 119991, Russia
| | - Elizaveta P Simonenko
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky Pr., Moscow 119991, Russia
| | - Nikolay T Kuznetsov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, 31 Leninsky Pr., Moscow 119991, Russia
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14
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Shin M, Awasthi GP, Sharma KP, Pandey P, Park M, Ojha GP, Yu C. Nanoarchitectonics of Three-Dimensional Carbon Nanofiber-Supported Hollow Copper Sulfide Spheres for Asymmetric Supercapacitor Applications. Int J Mol Sci 2023; 24:ijms24119685. [PMID: 37298635 DOI: 10.3390/ijms24119685] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 05/29/2023] [Accepted: 05/30/2023] [Indexed: 06/12/2023] Open
Abstract
Three-dimensional carbon nanofiber (3D-CNF)-supported hollow copper sulfide (HCuS) spheres were synthesized by the facile hydrothermal method. The morphology of the as-synthesized HCuS@3D-CNF composite clearly revealed that the 3D-CNFs act as a basement for HCuS spheres. The electrochemical performance of as-synthesized HCuS@3D-CNFs was evaluated by cyclic voltammetry (CV) tests, gravimetric charge-discharge (GCD) tests, and Nyquist plots. The obtained results revealed that the HCuS@3D-CNFs exhibited greater areal capacitance (4.6 F/cm2) compared to bare HCuS (0.64 F/cm2) at a current density of 2 mA/cm2. Furthermore, HCuS@3D-CNFs retained excellent cyclic stability of 83.2% after 5000 cycles. The assembled asymmetric device (HCuS@3D-CNFs//BAC) exhibits an energy density of 0.15 mWh/cm2 with a working potential window of 1.5 V in KOH electrolyte. The obtained results demonstrate that HZnS@3D-CNF nanoarchitectonics is a potential electrode material for supercapacitor applications.
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Affiliation(s)
- Miyeon Shin
- Department of Energy Storage, Conversion Engineering of Graduate School, Jeonbuk National University, Jeonju 54896, Republic of Korea
| | - Ganesh Prasad Awasthi
- Division of Convergence Technology Engineering, Jeonbuk National University, Jeonju 54896, Republic of Korea
| | - Krishna Prasad Sharma
- Division of Convergence Technology Engineering, Jeonbuk National University, Jeonju 54896, Republic of Korea
| | - Puran Pandey
- Division of Physics and Semiconductor Science, Dongguk University, Seoul 04620, Republic of Korea
| | - Mira Park
- Carbon Composite Energy Nanomaterials Research Center, Woosuk University, Wanju 55338, Republic of Korea
| | - Gunendra Prasad Ojha
- Carbon Composite Energy Nanomaterials Research Center, Woosuk University, Wanju 55338, Republic of Korea
| | - Changho Yu
- Department of Energy Storage, Conversion Engineering of Graduate School, Jeonbuk National University, Jeonju 54896, Republic of Korea
- Division of Convergence Technology Engineering, Jeonbuk National University, Jeonju 54896, Republic of Korea
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15
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Nie Y, Xu X, Wang X, Liu M, Gao T, Liu B, Li L, Meng X, Gu P, Zou J. CoNi Alloys Encapsulated in N-Doped Carbon Nanotubes for Stabilizing Oxygen Electrocatalysis in Zinc-Air Battery. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13111788. [PMID: 37299692 DOI: 10.3390/nano13111788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 05/25/2023] [Accepted: 05/30/2023] [Indexed: 06/12/2023]
Abstract
Alloy-based catalysts with high corrosion resistance and less self-aggregation are essential for oxygen reduction/evolution reactions (ORR/OER). Here, via an in situ growth strategy, NiCo alloy-inserted nitrogen-doped carbon nanotubes were assembled on a three-dimensional hollow nanosphere (NiCo@NCNTs/HN) using dicyandiamide. NiCo@NCNTs/HN exhibited better ORR activity (half-wave potential (E1/2) of 0.87 V) and stability (E1/2 shift of only -13 mV after 5000 cycles) than commercial Pt/C. NiCo@NCNTs/HN displayed a lower OER overpotential (330 mV) than RuO2 (390 mV). The NiCo@NCNTs/HN-assembled zinc-air battery exhibited high specific-capacity (847.01 mA h g-1) and cycling-stability (291 h). Synergies between NiCo alloys and NCNTs facilitated the charge transfer to promote 4e- ORR/OER kinetics. The carbon skeleton inhibited the corrosion of NiCo alloys from surface to subsurface, while inner cavities of CNTs confined particle growth and the aggregation of NiCo alloys to stabilize bifunctional activity. This provides a viable strategy for the design of alloy-based catalysts with confined grain-size and good structural/catalytic stabilities in oxygen electrocatalysis.
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Affiliation(s)
- Yao Nie
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Xiaoqin Xu
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Xinyu Wang
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Mingyang Liu
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Ting Gao
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Bin Liu
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Lixin Li
- School of Environment and Chemical Engineering, Heilongjiang University of Science and Technology, Harbin 150080, China
| | - Xin Meng
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Peng Gu
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Jinlong Zou
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
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16
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Volkov AI, Apraksin RV. Hofmeister Series for Conducting Polymers: The Road to Better Electrochemical Activity? Polymers (Basel) 2023; 15:polym15112468. [PMID: 37299268 DOI: 10.3390/polym15112468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 05/19/2023] [Accepted: 05/23/2023] [Indexed: 06/12/2023] Open
Abstract
Poly-3,4-ethylenedioxythiophene:polystyrene sulfonate (PEDOT:PSS) is a widely used conducting polymer with versatile applications in organic electronics. The addition of various salts during the preparation of PEDOT:PSS films can significantly influence their electrochemical properties. In this study, we systematically investigated the effects of different salt additives on the electrochemical properties, morphology, and structure of PEDOT:PSS films using a variety of experimental techniques, including cyclic voltammetry, electrochemical impedance spectroscopy, operando conductance measurements and in situ UV-VIS spectroelectrochemistry. Our results showed that the electrochemical properties of the films are closely related to the nature of the additives used and allowed us to establish a probable relationship with the Hofmeister series. The correlation coefficients obtained for the capacitance and Hofmeister series descriptors indicate a strong relationship between the salt additives and the electrochemical activity of PEDOT:PSS films. The work allows us to better understand the processes occurring within PEDOT:PSS films during modification with different salts. It also demonstrates the potential for fine-tuning the properties of PEDOT:PSS films by selecting appropriate salt additives. Our findings can contribute to the development of more efficient and tailored PEDOT:PSS-based devices for a wide range of applications, including supercapacitors, batteries, electrochemical transistors, and sensors.
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Affiliation(s)
- Alexey I Volkov
- Department of Electrochemistry, Institute of Chemistry, St. Petersburg State University, 7/9 Universitetskaya Embankment, St. Petersburg 199034, Russia
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17
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An X, Xu L, Xu L, Zhu L, She J, He J, Jiang W, Zhu W, Li H. Boosting Catalytic Oxidative Desulfurization Performance over Yolk-Shell Nickel Molybdate Fabricated by Defect Engineering. Inorg Chem 2023. [PMID: 37229753 DOI: 10.1021/acs.inorgchem.3c01106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Developing catalysts with optimized surface properties is significant for advanced catalysis. Herein, a rational architectural design is proposed to successfully synthesize yolk-shell nickel molybdate with abundant oxygen vacancies (YS-VO-NMO) via an acid-assisted defect engineering strategy. Notably, YS-VO-NMO with the yolk-shell structure shows complex nanoconfined interior space, which is beneficial to the mass transfer and active sites exposure. Moreover, the defect engineering strategy is of great importance to modulate the surface electronic structure and atomic composition, which contributes to the enrichment of oxygen vacancies. Benefiting from these features, the higher hydrogen peroxide activation is achieved by YS-VO-NMO to produce more hydroxyl radicals compared with untreated nickel molybdate. Consequently, the defect-engineered YS-VO-NMO not only features superior catalytic activity (99.5%) but also retains high desulfurization efficiency after recycling eight times. This manuscript provides new inspiration for designing more promising defective materials via defect engineering and architecture for different applications besides oxidative desulfurization.
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Affiliation(s)
- Xin An
- Institute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Lingchao Xu
- Institute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Lixian Xu
- Institute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Linhua Zhu
- College of Chemistry and Chemical Engineering, Key Laboratory of Water Pollution Treatment and Resource Reuse of Hainan Province, Hainan Normal University, Haikou 571158, P.R. China
| | - Junfeng She
- Institute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Jing He
- Institute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Wei Jiang
- Institute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
- College of Chemistry and Chemical Engineering, Key Laboratory of Water Pollution Treatment and Resource Reuse of Hainan Province, Hainan Normal University, Haikou 571158, P.R. China
| | - Wenshuai Zhu
- Institute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Huaming Li
- Institute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
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18
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Zhang K, Zeng HY, Ge KW, Wang MX, Li HB. In Situ Transformation of Metal Molybdates into Polymetallic Sulfides with Enriched Edge Sites for High-Performance Supercapacitors. Inorg Chem 2023; 62:8219-8231. [PMID: 37191263 DOI: 10.1021/acs.inorgchem.3c00620] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
An effective approach to synthesize polycrystalline Ni-Co-Mo sulfide (NiCoMoS) is developed through doping engineering coupled with chemical transformation. The polycrystalline NiCoMoS with enriched active edge sites is designed and fabricated on a Ni foam (NF) via a facile hydrothermal calcination and post-sulfidation approach, where the polycrystalline NiCoMoO4 precursor is elaborately prepared by doping Co ions into the NiMoO4 lattice and subsequently in-situ-converted into NiCoMoS with 3D architectures of ordered nanoneedle arrays. Benefiting from the unique 3D structure and synergistic effects of each component, the optimized needle-like NiCoMoS(2.0) arraying on a NF as a self-standing electrode exhibits superior electrochemical performances with a high specific charge (920.0 C g-1 at 1.0 A g-1), excellent rate capability, and good long-term stability. Furthermore, the assembled NiCoMoS//activated carbon hybrid device presents a satisfactory supercapacitor performance, affording an energy density of 35.2 W h kg-1 at a power density of 800.0 W kg-1 and competitive long-term stability (83.8% retention at 15 A g-1 after 10,000 cycles). Such a novel strategy may pave a new route for exploring other polymetallic sulfides with enriched, exposed active edge sites for energy-related applications.
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Affiliation(s)
- Kai Zhang
- College of Chemical Engineering, Xiangtan University, Xiangtan 411105, Hunan, China
| | - Hong-Yan Zeng
- College of Chemical Engineering, Xiangtan University, Xiangtan 411105, Hunan, China
| | - Kai-Wen Ge
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China
| | - Ming-Xin Wang
- College of Chemical Engineering, Xiangtan University, Xiangtan 411105, Hunan, China
| | - Hao-Bo Li
- College of Chemical Engineering, Xiangtan University, Xiangtan 411105, Hunan, China
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19
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Guo C, Chen S, Aslam J, Li J, Lv LP, Sun W, Cao W, Wang Y. Microwave-Assisted Metal-Organic Frameworks Derived Synthesis of Zn 2GeO 4 Nanowire Bundles for Lithium-Ion Batteries. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1432. [PMID: 37111018 PMCID: PMC10145008 DOI: 10.3390/nano13081432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 04/18/2023] [Accepted: 04/19/2023] [Indexed: 06/19/2023]
Abstract
Germanium-based multi-metallic-oxide materials have advantages of low activation energy, tunable output voltage, and high theoretical capacity. However, they also exhibit unsatisfactory electronic conductivity, sluggish cation kinetics, and severe volume change, resulting in inferior long-cycle stability and rate performance in lithium-ion batteries (LIBs). To solve these problems, we synthesize metal-organic frameworks derived from rice-like Zn2GeO4 nanowire bundles as the anode of LIBs via a microwave-assisted hydrothermal method, minimizing the particle size and enlarging the cation's transmission channels, as well as, enhancing the electronic conductivity of the materials. The obtained Zn2GeO4 anode exhibits superior electrochemical performance. A high initial charge capacity of 730 mAhg-1 is obtained and maintained at 661 mAhg-1 after 500 cycles at 100 mA g-1 with a small capacity degradation ratio of ~0.02% for each cycle. Moreover, Zn2GeO4 exhibits a good rate performance, delivering a high capacity of 503 mA h g-1 at 5000 mA g-1. The good electrochemical performance of the rice-like Zn2GeO4 electrode can be attributed to its unique wire-bundle structure, the buffering effect of the bimetallic reaction at different potentials, good electrical conductivity, and fast kinetic rate.
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Affiliation(s)
- Chaofei Guo
- Department of Chemical Engineering, School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai 200444, China; (C.G.); (S.C.); (J.A.); (L.-P.L.); (W.S.)
| | - Shuangqiang Chen
- Department of Chemical Engineering, School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai 200444, China; (C.G.); (S.C.); (J.A.); (L.-P.L.); (W.S.)
| | - Junaid Aslam
- Department of Chemical Engineering, School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai 200444, China; (C.G.); (S.C.); (J.A.); (L.-P.L.); (W.S.)
| | - Jiayi Li
- Department of Chemistry, College of Sciences, Shanghai University, 99 Shangda Road, Shanghai 200444, China;
| | - Li-Ping Lv
- Department of Chemical Engineering, School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai 200444, China; (C.G.); (S.C.); (J.A.); (L.-P.L.); (W.S.)
| | - Weiwei Sun
- Department of Chemical Engineering, School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai 200444, China; (C.G.); (S.C.); (J.A.); (L.-P.L.); (W.S.)
| | - Weimin Cao
- Department of Chemistry, College of Sciences, Shanghai University, 99 Shangda Road, Shanghai 200444, China;
| | - Yong Wang
- Department of Chemical Engineering, School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai 200444, China; (C.G.); (S.C.); (J.A.); (L.-P.L.); (W.S.)
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20
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Guan Y, Hu K, Su N, Zhang G, Han Y, An M. Review of NiS-Based Electrode Nanomaterials for Supercapacitors. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:979. [PMID: 36985879 PMCID: PMC10056300 DOI: 10.3390/nano13060979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 02/26/2023] [Accepted: 03/01/2023] [Indexed: 06/18/2023]
Abstract
As a new type of energy storage device, supercapacitors have the advantages of high-power densities, high safety factors, and low maintenance costs, so they have attracted widespread attention among researchers. However, a major problem with supercapacitors is that their energy densities are not high enough, which limits their application. Therefore, it is crucial to expand the application scenarios of supercapacitors to increase their energy density as much as possible without diminishing their advantages. The classification and working principles of supercapacitors are introduced in this paper. The electrochemical properties of pure NiS materials, NiS composites with carbon materials, NiS composites with sulfide materials, and NiS composites with transition metal oxides for supercapacitors are summarized. This paper may assist in the design of new electrode materials for NiS-based supercapacitors.
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Affiliation(s)
- Yuhao Guan
- College of New Energy, Xi’an Shiyou University, Xi’an 710065, China
| | - Kexie Hu
- College of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China
| | - Nan Su
- Engineering Science and Technology College of Equipment Engineering, Shanxi Vocational University of Engineering and Technology, Taiyuan 030619, China
| | - Gaohe Zhang
- College of New Energy, Xi’an Shiyou University, Xi’an 710065, China
| | - Yujia Han
- Shanxi Research Institute for Clean Energy, Tsinghua University, Taiyuan 030032, China
| | - Minrong An
- College of New Energy, Xi’an Shiyou University, Xi’an 710065, China
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21
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Liu HY, Wu JY. Tunable Electronic Properties of Two-Dimensional GaSe 1-xTe x Alloys. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:818. [PMID: 36903697 PMCID: PMC10005243 DOI: 10.3390/nano13050818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 02/18/2023] [Accepted: 02/21/2023] [Indexed: 06/18/2023]
Abstract
In this work, we performed a theoretical study on the electronic properties of monolayer GaSe1-xTex alloys using the first-principles calculations. The substitution of Se by Te results in the modification of a geometric structure, charge redistribution, and bandgap variation. These remarkable effects originate from the complex orbital hybridizations. We demonstrate that the energy bands, the spatial charge density, and the projected density of states (PDOS) of this alloy are strongly dependent on the substituted Te concentration.
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Affiliation(s)
- Hsin-Yi Liu
- Department of Physics/QTC/Hi-GEM, National Cheng Kung University, Tainan 701, Taiwan
| | - Jhao-Ying Wu
- Center of General Studies, National Kaohsiung University of Science and Technology, Kaohsiung 811, Taiwan
- Department of Energy and Refrigerating Air-Conditioning Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 811, Taiwan
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22
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An X, Jiang W, He J, Zhu L, Xu L, Li H, Zhu W, Li H. Modulating Electronic Characteristics of Nickel Molybdate via an Effective Manganese-Doping Strategy to Enhance Oxidative Desulfurization Performance. Inorg Chem 2022; 61:21067-21075. [PMID: 36511781 DOI: 10.1021/acs.inorgchem.2c03592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Modulating the electronic characteristics of catalysts plays a significant role in optimizing their catalytic activity. Herein, Mn-doped nickel molybdate (MNMO) nanorods are synthesized via replacing the partial Ni sites by the Mn element, engineering a bimetallic synergistic effect to enhance the activation of oxygen (O2). Compared with the extremely low catalytic activity of pristine nickel molybdate (NiMoO4), complete desulfurization can be achieved by MNMO under the same reaction conditions. Characterization results show that the electronic structure and surface atomic composition of pure NiMoO4 will be modulated owing to the introduction of Mn atoms, leading to the enhancement of the oxygen vacancy content and stronger O2 activation capacity. Besides, the optimized catalyst MNMO-20 also displays satisfactory cycle performance, and the sulfur removal of dibenzothiophene still maintains 96.1% after six times of recycling. The distinctive engineering strategy and simple synthesis method provide a new insight in designing and developing oxidative desulfurization catalysts with high stability and effectivity.
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Affiliation(s)
- Xin An
- Institute for Energy Research and School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Wei Jiang
- Institute for Energy Research and School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China.,College of Chemistry and Chemical Engineering, Key Laboratory of Water Pollution Treatment and Resource Reuse of Hainan Province, Hainan Normal University, Haikou 571158, P. R. China
| | - Jing He
- Institute for Energy Research and School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Linhua Zhu
- College of Chemistry and Chemical Engineering, Key Laboratory of Water Pollution Treatment and Resource Reuse of Hainan Province, Hainan Normal University, Haikou 571158, P. R. China
| | - Lingchao Xu
- Institute for Energy Research and School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Hongping Li
- Institute for Energy Research and School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Wenshuai Zhu
- Institute for Energy Research and School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Huaming Li
- Institute for Energy Research and School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
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23
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Anil Kumar Y, Yadav AA, Al-Asbahi BA, Kang SW, Moniruzzaman M. Sulfur Nanoparticle-Decorated Nickel Cobalt Sulfide Hetero-Nanostructures with Enhanced Energy Storage for High-Performance Supercapacitors. Molecules 2022; 27:7458. [PMID: 36364283 PMCID: PMC9658846 DOI: 10.3390/molecules27217458] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 10/25/2022] [Accepted: 10/28/2022] [Indexed: 02/04/2024] Open
Abstract
Transition-metal sulfides exaggerate higher theoretical capacities and were considered a type of prospective nanomaterials for energy storage; their inherent weaker conductivities and lower electrochemical active sites limited the commercial applications of the electrodes. The sheet-like nickel cobalt sulfide nanoparticles with richer sulfur vacancies were fabricated by a two-step hydrothermal technique. The sheet-like nanoparticles self-combination by ultrathin nanoparticles brought active electrodes entirely contacted with the electrolytes, benefiting ion diffusion and charges/discharges. Nevertheless, defect engineers of sulfur vacancy at the atomic level raise the intrinsic conductivities and improve the active sites for energy storage functions. As a result, the gained sulfur-deficient NiCo2S4 nanosheets consist of good specific capacitances of 971 F g-1 at 2 A g-1 and an excellent cycle span, retaining 88.7% of the initial capacitance over 3500 cyclings. Moreover, the values of capacitance results exhibited that the fulfilling characteristic of the sample was a combination of the hydrothermal procedure and the surface capacitances behavior. This novel investigation proposes a new perspective to importantly improve the electrochemical performances of the electrode by the absolute engineering of defects and morphologies in the supercapacitor field.
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Affiliation(s)
- Yedluri Anil Kumar
- Department of Physics, United Arab Emirates University, Al Ain 15551, United Arab Emirates
| | - Anuja A. Yadav
- Department of Automotive Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan 38541, Gyeongbuk-do, Korea
| | - Bandar Ali Al-Asbahi
- Department of Physics & Astronomy, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Seok-Won Kang
- Department of Automotive Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan 38541, Gyeongbuk-do, Korea
| | - Md Moniruzzaman
- Department of Chemical and Biological Engineering, Gachon University, 1342 Seongnam-daero, Seongnam-si 13120, Gyeonggi-do, Korea
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24
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Tian S, Zhang B, Han D, Gong Z, Li X. Fe 2O 3/Porous Carbon Composite Derived from Oily Sludge Waste as an Advanced Anode Material for Supercapacitor Application. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3819. [PMID: 36364595 PMCID: PMC9656837 DOI: 10.3390/nano12213819] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 10/19/2022] [Accepted: 10/25/2022] [Indexed: 06/16/2023]
Abstract
It is urgent to improve the electrochemical performance of anode for supercapacitors. Herein, we successfully prepare Fe2O3/porous carbon composite materials (FPC) through hydrothermal strategies by using oily sludge waste. The hierarchical porous carbon (HPC) substrate and fine loading of Fe2O3 nanorods are all important for the electrochemical performance. The HPC substrate could not only promote the surface capacitance effect but also improve the utilization efficiency of Fe2O3 to enhance the pseudo-capacitance. The smaller and uniform Fe2O3 loading is also beneficial to optimize the pore structure of the electrode and enlarge the interface for faradaic reactions. The as-prepared FPC shows a high specific capacitance of 465 F g-1 at 0.5 A g-1, good rate capability of 66.5% retention at 20 A g-1, and long cycling stability of 88.4% retention at 5 A g-1 after 4000 cycles. In addition, an asymmetric supercapacitor device (ASC) constructed with FPC as the anode and MnO2/porous carbon composite (MPC) as the cathode shows an excellent power density of 72.3 W h kg-1 at the corresponding power density of 500 W kg-1 with long-term cycling stability. Owing to the outstanding electrochemical characteristics and cycling performance, the associated materials' design concept from oily sludge waste has large potential in energy storage applications and environmental protection.
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Affiliation(s)
- Shubing Tian
- College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Baoling Zhang
- College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Dong Han
- College of New Energy, China University of Petroleum (East China), Qingdao 266580, China
| | - Zhiqiang Gong
- State Grid Shandong Electric Power Research Institute, Jinan 250003, China
| | - Xiaoyu Li
- College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266590, China
- College of New Energy, China University of Petroleum (East China), Qingdao 266580, China
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25
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M. Khalaf M, M. Abd El-Lateef H, Dao VD, Mohamed IMA. Electrocatalysis of Methanol Oxidation in Alkaline Electrolytes over Novel Amorphous Fe/Ni Biphosphate Material Prepared by Different Techniques. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3429. [PMID: 36234558 PMCID: PMC9565568 DOI: 10.3390/nano12193429] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 09/25/2022] [Accepted: 09/28/2022] [Indexed: 06/16/2023]
Abstract
In this work, novel phosphate materials based on bimetallic character (Fe and Ni) were introduced by different chemical fabrication methods, the reflux method (FeNiP-R) and the sol-gel technique (FeNiP-S), and evaluated as non-precious electrodes for methanol electrooxidation in KOH electrolytes. The designed FeNiP-R and FeNiP-S samples were investigated using different characterization techniques, namely TEM, SEM, XPS, BET, DLS, and FT-IR, to describe the impact of the fabrication technique on the chemistry, morphology, and surface area. The characterization techniques indicate the successful fabrication of nanoscale-sized particles with higher agglomeration by the sol-gel technique compared with the reflux strategy. After that, the electrochemical efficiency of the fabricated FeNiP-R and FeNiP-S as electrodes for electrocatalytic methanol oxidation was studied through cyclic voltammetry (CV) at different methanol concentrations and scan rates in addition to impedance analysis and chronoamperometric techniques. From electrochemical analyses, a sharp improvement in the obtained current values was observed in both electrodes, FeNiP-R and FeNiP-S. During the MeOH electrooxidation over FeNiP-S, the current value was improved from 0.14 mA/cm2 at 0.402 V to 2.67 mA/cm2 at 0.619 V, which is around 109 times the current density value (0.0243 mA/cm2 at 0.62 V) found in the absence of MeOH. The designed FeNiP-R electrode showed an improved electrocatalytic character compared with FeNiP-S at different methanol concentrations up to 80 mmol/L. The enhancement of the anodic current density and charge transfer resistance indicates the methanol electrooxidation over the designed bimetallic Fe/Ni-phosphates.
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Affiliation(s)
- Mai M. Khalaf
- Department of Chemistry, College of Science, King Faisal University, Al-Ahsa 31982, Saudi Arabia
- Department of Chemistry, Faculty of Science, Sohag University, Sohag 82524, Egypt
| | - Hany M. Abd El-Lateef
- Department of Chemistry, College of Science, King Faisal University, Al-Ahsa 31982, Saudi Arabia
- Department of Chemistry, Faculty of Science, Sohag University, Sohag 82524, Egypt
| | - Van-Duong Dao
- Faculty of Biotechnology, Chemistry and Environmental Engineering, Phenikaa University, Hanoi 10000, Vietnam
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26
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Sharma P, Singh D, Minakshi M, Quadsia S, Ahuja R. Activation-Induced Surface Modulation of Biowaste-Derived Hierarchical Porous Carbon for Supercapacitors. Chempluschem 2022; 87:e202200126. [PMID: 35642129 DOI: 10.1002/cplu.202200126] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 05/09/2022] [Indexed: 02/03/2023]
Abstract
Wheat straw-derived carbon from the Wheatbelt region in Western Australia was subjected to chemical activation in an electrolyte containing either acid or base treatment. The findings showed an increase in electron/hole mobility towards the interfaces due to the presence of different surface functional groups such as C-SOx -C and S=C in the carbon framework for acid activation. Likewise, the galvanostatic capacitance measured at a current density of 2 mA cm-2 in a three-electrode configuration for acid-activated wheat straw exhibited 162 F g-1 , while that for base-activated wheat straw exhibited 106 F g-1 . An increase of 34.5 % more capacitance was achieved for acid-treated wheat straw. This improvement is attributed to the synergistic effects between surface functional groups and electrolyte ions, as well as the electronic structure of the porous electrode.
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Affiliation(s)
- Pratigya Sharma
- College of Science, Health, Engineering and Education, Murdoch University, Perth, WA 6150, Australia
| | - Deobrat Singh
- Condensed Matter Theory Group, Materials Theory Division, Department of Physics and Astronomy, Uppsala University, Box 516, 75120, Uppsala, Sweden
| | - Manickam Minakshi
- College of Science, Health, Engineering and Education, Murdoch University, Perth, WA 6150, Australia
| | - Saleha Quadsia
- College of Science, Health, Engineering and Education, Murdoch University, Perth, WA 6150, Australia
| | - Rajeev Ahuja
- Condensed Matter Theory Group, Materials Theory Division, Department of Physics and Astronomy, Uppsala University, Box 516, 75120, Uppsala, Sweden.,Department of Physics, Indian Institute of Technology Ropar, Rupnagar 140001, Punjab, India
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27
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Sun Y, Wang X, Umar A, Wu X. Approaching high performance Ni(Co) molybdate electrode materials for flexible hybrid devices. RSC Adv 2022; 12:14858-14864. [PMID: 35702209 PMCID: PMC9111958 DOI: 10.1039/d2ra01778d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Accepted: 04/29/2022] [Indexed: 12/26/2022] Open
Abstract
Transition metal molybdates are widely used as electrode materials for supercapacitors due to their high theoretical specific capacitance and excellent electrochemical activity. It is an effective strategy to improve the electrochemical performance by reasonably designing electrode materials. Herein, we prepared several Ni1-xCoxMoO4·nH2O nanostructures through facile hydrothermal strategies. Benefiting from the synergistic effects between Ni and Co elements, the obtained electrode materials delivered a specific capacitance of 1390 F g−1 at 1 A g−1. The as-assembled device shows an energy density of 72.45 W h kg−1 at a power density of 2688.8 W kg−1. It also presents excellent cycling and mechanical stability after many times of charging and discharging processes and bending. We prepare several Ni1−xCoxMoO4·nH2O nanostructures through facile hydrothermal strategies. The obtained electrode materials delivered a specific capacitance of 1390 F g−1 at 1 A g−1. The as-assembled device shows an energy density of 72.45 W h kg−1 at a power density of 2688.8 W kg−1.![]()
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Affiliation(s)
- Yuchen Sun
- School of Materials Science and Engineering, Shenyang University of Technology Shenyang 110870 P. R. China
| | - Xiaowei Wang
- School of Materials Science and Engineering, Shenyang University of Technology Shenyang 110870 P. R. China
| | - Ahmad Umar
- Department of Chemistry, College of Science and Arts, Najran University Najran 11001 Saudi Arabia
| | - Xiang Wu
- School of Materials Science and Engineering, Shenyang University of Technology Shenyang 110870 P. R. China
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28
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Ren X, Gan Z, Sun M, Fang Q, Yan Y, Sun Y, Huang J, Cao B, Shen W, Li Z, Fu Y. Colloidal synthesis of flower-like Zn doped Ni(OH)2@CNTs at room-temperature for hybrid supercapacitor with high rate capability and energy density. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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29
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Askari MB, Rozati SM, Di Bartolomeo A. Fabrication of Mn3O4-CeO2-rGO as Nanocatalyst for Electro-Oxidation of Methanol. NANOMATERIALS 2022; 12:nano12071187. [PMID: 35407306 PMCID: PMC9002773 DOI: 10.3390/nano12071187] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 03/30/2022] [Accepted: 03/31/2022] [Indexed: 12/29/2022]
Abstract
Recently, the use of metal oxides as inexpensive and efficient catalysts has been considered by researchers. In this work, we introduce a new nanocatalyst including a mixed metal oxide, consisting of manganese oxide, cerium oxide, and reduced graphene oxide (Mn3O4-CeO2-rGO) by the hydrothermal method. The synthesized nanocatalyst was evaluated for the methanol oxidation reaction. The synergetic effect of metal oxides on the surface of rGO was investigated. Mn3O4-CeO2-rGO showed an oxidation current density of 17.7 mA/cm2 in overpotential of 0.51 V and 91% stability after 500 consecutive rounds of cyclic voltammetry. According to these results, the synthesized nanocatalyst can be an attractive and efficient option in the methanol oxidation reaction process.
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Affiliation(s)
- Mohammad Bagher Askari
- Department of Physics, Faculty of Science, University of Guilan, Rasht P.O. Box 41335-1914, Iran;
| | - Seyed Mohammad Rozati
- Department of Physics, Faculty of Science, University of Guilan, Rasht P.O. Box 41335-1914, Iran;
- Correspondence: (S.M.R.); (A.D.B.)
| | - Antonio Di Bartolomeo
- Department of Physics “E. R. Caianiello” and Interdepartmental Center NANOMATES, University of Salerno, 84084 Fisciano, SA, Italy
- Correspondence: (S.M.R.); (A.D.B.)
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30
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Wang P, Ding X, Zhe R, Zhu T, Qing C, Liu Y, Wang HE. Synchronous Defect and Interface Engineering of NiMoO 4 Nanowire Arrays for High-Performance Supercapacitors. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:1094. [PMID: 35407214 PMCID: PMC9000437 DOI: 10.3390/nano12071094] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 03/18/2022] [Accepted: 03/24/2022] [Indexed: 11/16/2022]
Abstract
Developing high-performance electrode materials is in high demand for the development of supercapacitors. Herein, defect and interface engineering has been simultaneously realized in NiMoO4 nanowire arrays (NWAs) using a simple sucrose coating followed by an annealing process. The resultant hierarchical oxygen-deficient NiMoO4@C NWAs (denoted as "NiMoO4-x@C") are grown directly on conductive ferronickel foam substrates. This composite affords direct electrical contact with the substrates and directional electron transport, as well as short ionic diffusion pathways. Furthermore, the coating of the amorphous carbon shell and the introduction of oxygen vacancies effectively enhance the electrical conductivity of NiMoO4. In addition, the coated carbon layer improves the structural stability of the NiMoO4 in the whole charging and discharging process, significantly enhancing the cycling stability of the electrode. Consequently, the NiMoO4-x@C electrode delivers a high areal capacitance of 2.24 F cm-2 (1720 F g-1) at a current density of 1 mA cm-2 and superior cycling stability of 84.5% retention after 6000 cycles at 20 mA cm-2. Furthermore, an asymmetric super-capacitor device (ASC) has been constructed with NiMoO4-x@C as the positive electrode and activated carbon (AC) as the negative electrode. The as-assembled ASC device shows excellent electrochemical performance with a high energy density of 51.6 W h kg-1 at a power density of 203.95 W kg-1. Moreover, the NiMoO4//AC ASC device manifests remarkable cyclability with 84.5% of capacitance retention over 6000 cycles. The results demonstrate that the NiMoO4-x@C composite is a promising material for electrochemical energy storage. This work can give new insights on the design and development of novel functional electrode materials via defect and interface engineering through simple yet effective chemical routes.
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Affiliation(s)
- Pengcheng Wang
- Yunnan Key Laboratory of Optoelectronic Information Technology, College of Physics and Electronics Information, Yunnan Normal University, Kunming 650500, China; (P.W.); (X.D.); (R.Z.); (T.Z.); (Y.L.)
| | - Xinying Ding
- Yunnan Key Laboratory of Optoelectronic Information Technology, College of Physics and Electronics Information, Yunnan Normal University, Kunming 650500, China; (P.W.); (X.D.); (R.Z.); (T.Z.); (Y.L.)
| | - Rongjie Zhe
- Yunnan Key Laboratory of Optoelectronic Information Technology, College of Physics and Electronics Information, Yunnan Normal University, Kunming 650500, China; (P.W.); (X.D.); (R.Z.); (T.Z.); (Y.L.)
| | - Ting Zhu
- Yunnan Key Laboratory of Optoelectronic Information Technology, College of Physics and Electronics Information, Yunnan Normal University, Kunming 650500, China; (P.W.); (X.D.); (R.Z.); (T.Z.); (Y.L.)
- Key Laboratory of Advanced Technique & Preparation for Renewable Energy Materials, Ministry of Education, Yunnan Normal University, Kunming 650500, China
| | - Chen Qing
- Yunnan Key Laboratory of Optoelectronic Information Technology, College of Physics and Electronics Information, Yunnan Normal University, Kunming 650500, China; (P.W.); (X.D.); (R.Z.); (T.Z.); (Y.L.)
- Key Laboratory of Advanced Technique & Preparation for Renewable Energy Materials, Ministry of Education, Yunnan Normal University, Kunming 650500, China
| | - Yingkai Liu
- Yunnan Key Laboratory of Optoelectronic Information Technology, College of Physics and Electronics Information, Yunnan Normal University, Kunming 650500, China; (P.W.); (X.D.); (R.Z.); (T.Z.); (Y.L.)
| | - Hong-En Wang
- Yunnan Key Laboratory of Optoelectronic Information Technology, College of Physics and Electronics Information, Yunnan Normal University, Kunming 650500, China; (P.W.); (X.D.); (R.Z.); (T.Z.); (Y.L.)
- Key Laboratory of Advanced Technique & Preparation for Renewable Energy Materials, Ministry of Education, Yunnan Normal University, Kunming 650500, China
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31
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Successful Manufacturing Protocols of N-Rich Carbon Electrodes Ensuring High ORR Activity: A Review. Processes (Basel) 2022. [DOI: 10.3390/pr10040643] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
The exploration and development of different carbon nanomaterials happening over the past years have established carbon electrodes as an important electrocatalyst for oxygen reduction reaction. Metal-free catalysts are especially promising potential alternatives for replacing Pt-based catalysts. This article describes recent advances and challenges in the three main synthesis manners (i.e., pyrolysis, hydrothermal method, and chemical vapor deposition) as effective methods for the production of metal-free carbon-based catalysts. To improve the catalytic activity, heteroatom doping the structure of graphene, carbon nanotubes, porous carbons, and carbon nanofibers is important and makes them a prospective candidate for commercial applications. Special attention is paid to providing an overview on the recent major works about nitrogen-doped carbon electrodes with various concentrations and chemical environments of the heteroatom active sites. A detailed discussion and summary of catalytic properties in aqueous electrolytes is given for graphene and porous carbon-based catalysts in particular, including recent studies performed in the authors’ research group. Finally, we discuss pathways and development opportunities approaching the practical use of mainly graphene-based catalysts for metal–air batteries and fuel cells.
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32
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Lin S, Zhang T, Zhang J, Han X. Study on the One‐Step Synthesis of Oxides by Cationic Membrane Electrolysis of Ni and Co Chloride. ChemistrySelect 2022. [DOI: 10.1002/slct.202103872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Shengnan Lin
- Northeastern University School of Metallurgy Key Laboratory of Ecological Metallurgy of Multi-metal Intergrown Ores of Ministry of Education School of Metallurgy Northeastern University Wenhua Road Liaoning Shenyang 110819 China
| | - Tingan Zhang
- Northeastern University School of Metallurgy Key Laboratory of Ecological Metallurgy of Multi-metal Intergrown Ores of Ministry of Education School of Metallurgy Northeastern University Wenhua Road Liaoning Shenyang 110819 China
| | - Junjie Zhang
- Northeastern University School of Metallurgy Key Laboratory of Ecological Metallurgy of Multi-metal Intergrown Ores of Ministry of Education School of Metallurgy Northeastern University Wenhua Road Liaoning Shenyang 110819 China
| | - Xiuxiu Han
- Northeastern University School of Metallurgy Key Laboratory of Ecological Metallurgy of Multi-metal Intergrown Ores of Ministry of Education School of Metallurgy Northeastern University Wenhua Road Liaoning Shenyang 110819 China
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33
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Wu Q, Li W, Zou X, Xiang B. Nickel hydroxide/sulfide hybrids: halide ion controlled synthesis, structural characteristics, and electrochemical performance. Dalton Trans 2022; 51:4153-4165. [PMID: 35188509 DOI: 10.1039/d1dt04206h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Focusing on the synthesis of nickel-based materials (such as nickel sulfides, nickel hydroxides, and nickel oxides) is an urgent need in the fields of batteries, supercapacitors, and catalysis. However, their controlled synthesis still remains a great challenge because of the inadequate understanding of the control factor of their synthesis. A two-step solvo-/hydrothermal process with halide ion embedding/releasing was proposed to understand the effect of the halide ions on the synthesis and sulfidation of nickel hydroxy-halides. We find that the halide ions determine the formation, growth, and evolution of nickel hydroxy halides and promote them to form unique architectures and morphologies, leading to obvious differences in structural characteristics, including conductivity and electrochemical activity. Because of the presence of halide ions, a series of hybrids with multiple interfaces, which consist of hydroxides and sulfides and have various morphologies, such as flower-like balls, solid balls, porous balls, schistose, and thorny balls, with capacities ranging from 100.7 to 261.2 mA h g-1, can be easily obtained. It is fully demonstrated that the halide anion plays a core role in the synthesis process of nickel-based materials, and this finding will provide more chances for controllably synthesizing high-activity electrode materials.
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Affiliation(s)
- Qibing Wu
- Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China. .,State Key Laboratory of Advanced Chemical Power Sources, Guizhou Meiling Power Sources Co. Ltd, Zunyi, Guizhou 563003, China
| | - Weining Li
- Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China.
| | - Xuefeng Zou
- Guizhou Provincial Key Laboratory of Computational Nano-Material Science, Guizhou Education University, Guiyang 550018, China.
| | - Bin Xiang
- Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China.
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34
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Li X, Zhao C, He J, Li Y, Wang Y, Liu L, Huang J, Li C, Wang D, Duan J, Zhang Y. Removing lithium residues via H3BO3 washing and concurrent in-situ formation of a lithium reactive coating on Ni-rich cathode materials toward enhanced electrochemical performance. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.139879] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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35
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Huang B, Yao D, Yuan J, Tao Y, Yin Y, He G, Chen H. Hydrangea-like NiMoO 4-Ag/rGO as Battery-type electrode for hybrid supercapacitors with superior stability. J Colloid Interface Sci 2022; 606:1652-1661. [PMID: 34500166 DOI: 10.1016/j.jcis.2021.08.140] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 08/17/2021] [Accepted: 08/21/2021] [Indexed: 02/05/2023]
Abstract
It is a great challenge to design electrode materials with good stability and high specific capacitance for supercapacitors. Herein, a three-dimensional (3D) hydrangea-like NiMoO4 micro-architecture with Ag nanoparticles anchored on the surface has been designed by adding EDTA-2Na, which was assembled with reduced graphene oxide (rGO) and named as NiMoO4-Ag/rGO composite. Benefiting from the synergetic contributions of structural and componential properties, NiMoO4-Ag/rGO composite exhibits a high specific capacitance of 566.4 C g-1 at 1 A g-1, and great cycling performance with 90.5% capacitance retention after 1000 cycles at 10 A g-1. The NiMoO4-Ag/rGO electrode shows an enhanced cycling stability due to the two-dimensional towards two-dimensional (2D-2D) interface coupling between rGO and NiMoO4 nanosheets, and the stable 3D hydrangea-like micro-architecture. Moreover, NiMoO4-Ag/rGO with 5-15 nm pore structure and enhanced conductivity exhibits improved charge transfer and ions diffusion. Besides, NiMoO4-Ag/rGO//AC capacitor displays an outstanding energy density of 40.98 Wh kg-1 at 800 kW kg-1, and an excellent cycling performance with 73.3% capacitance retention at 10 A g-1 after 8000 cycles. The synthesis of NiMoO4-Ag/rGO composite can provide an effective strategy to solve the poor electrochemical stability and slow electron/ion transfer of NiMoO4 material as supercapacitors electrode.
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Affiliation(s)
- Bingji Huang
- Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou, Jiangsu Province 213164, China
| | - Dachuan Yao
- Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou, Jiangsu Province 213164, China
| | - Jingjing Yuan
- Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou, Jiangsu Province 213164, China
| | - Yingrui Tao
- Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou, Jiangsu Province 213164, China
| | - Yixuan Yin
- Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou, Jiangsu Province 213164, China
| | - Guangyu He
- Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou, Jiangsu Province 213164, China.
| | - Haiqun Chen
- Key Laboratory of Advanced Catalytic Materials and Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou, Jiangsu Province 213164, China.
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36
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Manikandan N, Lakshmi B, Shivakumara S. Preparation of self-assembled porous flower-like nanostructured magnetite (Fe3O4) electrode material for supercapacitor application. J Solid State Electrochem 2022. [DOI: 10.1007/s10008-021-05097-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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37
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Wei J, Guo J, Wang S, Ding N, Xu P, Wang P, Han D, Wei Y, Yin X. Fabrication of dual-functional electrodes using oxygen vacancy abundant NiCo 2O 4 nanosheets for advanced hybrid supercapacitors and Zn-ion batteries. Inorg Chem Front 2022. [DOI: 10.1039/d2qi00739h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
V-ZnCo2O4/Ni composites with rich oxygen vacancies are designed through a hydrothermal method followed by post calcination and reduction. This strategy enhanced electrical conductivity, modulated electronic structure, and increased active sites.
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Affiliation(s)
- Jinhe Wei
- College of Chemistry and Pharmaceutical Engineering, Jilin Institute of Chemical Technology, Jilin 132022, China
| | - Jiaqing Guo
- School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, China
| | - Siyu Wang
- College of Chemistry and Pharmaceutical Engineering, Jilin Institute of Chemical Technology, Jilin 132022, China
| | - Ning Ding
- College of Chemistry and Pharmaceutical Engineering, Jilin Institute of Chemical Technology, Jilin 132022, China
| | - Pengcheng Xu
- College of Chemistry and Pharmaceutical Engineering, Jilin Institute of Chemical Technology, Jilin 132022, China
| | - Ping Wang
- College of Chemistry and Pharmaceutical Engineering, Jilin Institute of Chemical Technology, Jilin 132022, China
| | - Dandan Han
- College of Chemistry and Pharmaceutical Engineering, Jilin Institute of Chemical Technology, Jilin 132022, China
| | - Yen Wei
- Department of Chemistry and the Tsinghua Center for Frontier Polymer Research, Tsinghua University, Beijing, 100084, China
| | - Xiaohong Yin
- School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, China
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38
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Sharma P, Minakshi Sundaram M, Watcharatharapong T, Jungthawan S, Ahuja R. Tuning the Nanoparticle Interfacial Properties and Stability of the Core-Shell Structure in Zn-Doped NiMoO 4@AWO 4. ACS APPLIED MATERIALS & INTERFACES 2021; 13:56116-56130. [PMID: 34783535 DOI: 10.1021/acsami.1c16287] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The ability to tune the interfacial region in core-shell nanocomposites with a surface reconstruction as a source for surface energy (de)stabilization is presented. We consider Zn-doped nickel molybdate (NiMoO4) (ZNM) as a core crystal structure and AWO4 (A = Co or Mg) as a shell surface. Based on the density-functional theory method, the interfacial models of Zn-doped NiMoO4@AWO4 (ZNM@AW) core@shell structures are simulated and revealed to undergo surface reconstruction on the (-110) and (-202) surfaces of the AW shells, where the surface degradation of ZNM@MW(-110) is observed. The theoretical simulation is validated against the electrochemical performance of supercapacitor studies. To verify, we synthesize the hierarchical ZNM@AW core@shell semiconductor structured nanocomposites grown on a nickel foam conductive substrate using a facile and green two-step hydrothermal method. The morphology and chemical and electrochemical properties of the hierarchically structured nanocomposites are characterized in detail. The performance of the core@shell is significantly affected by the chosen intrinsic properties of metal oxides and exhibited high performance compared to a single-component system in supercapacitors. The proposed asymmetric device, Zn-doped NiMoO4@CoWO4 (ZNM@CW)||activated carbon, exhibits a superior pseudo-capacitance, delivering a high areal capacitance of 0.892 F cm-2 at a current density of 2 mA cm-2 and an excellent cycling stability of 96% retention of its initial capacitance after 1000 charge-discharge cycles. These fundamental theoretical and experimental insights with the extent of the surface reconstruction sufficiently explain the storage properties of the studied materials.
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Affiliation(s)
- Pratigya Sharma
- College of Science, Health, Engineering & Education, Murdoch University, Perth, WA 6150, Australia
| | | | | | - Sirichok Jungthawan
- School of Physics, Institute of Science, and Center of Excellence in Advanced Functional Materials, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
- Thailand Center of Excellence in Physics, Ministry of Higher Education, Science, Research and Innovation, 328 Si Ayutthaya Road, Bangkok 10400, Thailand
| | - Rajeev Ahuja
- Condensed Matter Theory Group, Material's Theory Division, Department of Physics and Astronomy, Uppsala University, Box 530, Uppsala SE-751 21, Sweden
- Department of Physics, Indian Institute of Technology (IIT) Ropar, Rupnagar 140001, Punjab, India
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39
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Ahmed M, Al-Hadeethi YM, Alshahrie A, Kutbee AT, Shaaban ER, Al-Hossainy AF. Thermal Analysis of a Metal-Organic Framework ZnxCo 1-X-ZIF-8 for Recent Applications. Polymers (Basel) 2021; 13:4051. [PMID: 34833351 PMCID: PMC8617863 DOI: 10.3390/polym13224051] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 11/19/2021] [Accepted: 11/19/2021] [Indexed: 12/27/2022] Open
Abstract
Zeolitic imidazolate frameworks (ZIFs) are interesting materials for use in several aspects: energy storage material, gas sensing, and photocatalysis. The thermal stability and pyrolysis process are crucial in determining the active phase of the material. A deep understanding of the pyrolysis mechanism is in demand. Therefore, the thermodynamics and combustion process with different heating rates was examined, and the kinetic parameters were computed employing thermogravimetric tests. Based on the TG analysis of combustion, pyrolysis moves to the high-temperature region with an increase in heating rate. The decomposition process can be separated into the dehydration (300-503 K) and the pyrolysis reaction (703-1100 K). Three points of the decomposition process are performed by dynamical analysis owing to shifts of slopes, but the combustion process has only one stage. The Zeolitic imidazolate framework's structure properties were examined using TDDFT-DFT/DMOl3 simulation techniques. Dynamical parameters, for instance, the possible mechanism, the pre-exponential factor, and the apparent activation energy are obtained through comparison using the Kissinger formula. The thermodynamics analysis of the Zn1-xCox-ZIF-8 materials is an effective way to explore the temperature influence on the process of pyrolysis, which can benefit several environment purifications, photocatalyst, and recent applications.
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Affiliation(s)
- Moustafa Ahmed
- Physics Department, Faculty of Science, King Abdulaziz University, 80203, Jeddah 21589, Saudi Arabia; (M.A.); (Y.M.A.-H.); (A.A.); (A.T.K.)
| | - Yas M Al-Hadeethi
- Physics Department, Faculty of Science, King Abdulaziz University, 80203, Jeddah 21589, Saudi Arabia; (M.A.); (Y.M.A.-H.); (A.A.); (A.T.K.)
| | - Ahmed Alshahrie
- Physics Department, Faculty of Science, King Abdulaziz University, 80203, Jeddah 21589, Saudi Arabia; (M.A.); (Y.M.A.-H.); (A.A.); (A.T.K.)
| | - Arwa T Kutbee
- Physics Department, Faculty of Science, King Abdulaziz University, 80203, Jeddah 21589, Saudi Arabia; (M.A.); (Y.M.A.-H.); (A.A.); (A.T.K.)
| | - Essam R. Shaaban
- Physics Department, Faculty of Science, Al-Azhar University, Assiut 11751, Egypt;
| | - Ahmed F. Al-Hossainy
- Chemistry Department, Faculty of Science, New Valley University, Kharga 11765, Egypt
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40
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Ji P, Wan J, Lu J, Zhang D, Hu C, Xi Y. Zn induced NiCo composites modified by carbon materials as a battery-type electrode material for high-performance supercapacitors. NANOTECHNOLOGY 2021; 32:495603. [PMID: 34438386 DOI: 10.1088/1361-6528/ac218e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 08/26/2021] [Indexed: 06/13/2023]
Abstract
The development of simple preparation and excellent capacity performance electrode materials is the key to energy conversion and storage for supercapacitors. Based on the growth mechanism of crystal, Zn induced NiCo nanosheets and nanoneedles composite structure deposed on Ni foam (ZNC) are successfully attained by a facile one-step method, the growth mechanism of the composite structure is further discussed. Because of its unique composites structure and additional modification of carbon, the carbon modified ZNC (ZNC@C) delivers better energy storage ability (2280 mC cm-2at 2 mA cm-2) compare to ZNC. An asymmetric supercapacitor (ASC) is assembled by ZNC@C as the positive electrode and carbonized popcorn as the negative electrode. The ASC exhibits good energy storage performance. Zn also positively affects the adsorption energy to enhance the capacitance property based on Density Functional theory calculation. The simple method for the composite structure by tuning the kinetics behaver of the crystal can provide a new strategy in synthesizing the materials, and the material with a unique structure and high performance will have potential applications in the field of energy storage.
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Affiliation(s)
- Peiyuan Ji
- Chongqing Key Laboratory of Soft Condensed Matter Physics and Smart Materials, Department of Applied Physics, Chongqing University, Chongqing 400044, People's Republic of China
| | - Jing Wan
- Chongqing Key Laboratory of Soft Condensed Matter Physics and Smart Materials, Department of Applied Physics, Chongqing University, Chongqing 400044, People's Republic of China
| | - Junlin Lu
- Chongqing Key Laboratory of Soft Condensed Matter Physics and Smart Materials, Department of Applied Physics, Chongqing University, Chongqing 400044, People's Republic of China
| | - Dazhi Zhang
- Department of Automotive Engineering, State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, People's Republic of China
| | - Chenguo Hu
- Chongqing Key Laboratory of Soft Condensed Matter Physics and Smart Materials, Department of Applied Physics, Chongqing University, Chongqing 400044, People's Republic of China
| | - Yi Xi
- Chongqing Key Laboratory of Soft Condensed Matter Physics and Smart Materials, Department of Applied Physics, Chongqing University, Chongqing 400044, People's Republic of China
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41
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Sandhiya M, Veerappan UKK, Sathish M. Crumpled B, F Co-doped graphene nanosheets for the fabrication of all-solid-state flexible supercapacitors. Chem Commun (Camb) 2021; 57:8336-8339. [PMID: 34323897 DOI: 10.1039/d1cc02679h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Crumpled B, F co-doped graphene nanosheets (BFGO) have been synthesized using supercritical water as the solvent in a short reaction time of 1 h and were demonstrated for the fabrication of all-solid-state flexible supercapacitors (ASFS). As-synthesized BFGO delivered high specific capacitance with an NaVO3/H2SO4 electrolyte (832 F g-1). Moreover, the fabricated ASFS showed excellent energy and power densities of 24 W h kg-1 and 800 W kg-1 at 1 A g-1, respectively.
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Affiliation(s)
- Murugesan Sandhiya
- Electrochemical Power Sources (ECPS) Division, CSIR-Central Electrochemical Research Institute, Karaikudi-630003, Tamilnadu, India.
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42
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Keerthana S, Rani BJ, Yuvakkumar R, Ravi G, Saravanakumar B, Pannipara M, Al-Sehemi AG, Velauthapillai D. NiMoO 4 nanorods photocatalytic activity comparison under UV and visible light. ENVIRONMENTAL RESEARCH 2021; 197:111073. [PMID: 33774013 DOI: 10.1016/j.envres.2021.111073] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 02/04/2021] [Accepted: 03/19/2021] [Indexed: 06/12/2023]
Abstract
Waste water remediation is the ongoing hot research topic that can reduce the water scarcity all over the world. By reducing the pollutants in the waste water drawn from industries and other sources will be more useful for domestic purposes. To reduce the rate of pollutants in water may also help in improving the aquatic environment and decreases other side effects. Efficient and cost effective catalysts were in search for both dye degradation and water remediation treatment applications. NiMoO4 nanorods were prepared by employing co-precipitation method with different stirrer time (2 h, 4 h and 6 h). The formation of NiMoO4 was substantiated employing X-ray diffractometer analysis (XRD). Vibrational and rotational property of the samples was analyzed by FT-IR spectra and Raman spectra. The optical property was further confirmed by UV-vis spectral studies. Morphological analysis studies revealed growth of nanorods with 6 h stirrer time. The photocatalytic behavior of the obtained product was carried out under both UV light (364 nm) and visible light irradiation. The samples subjected to visible light environment showed better efficiency on degrading the methylene blue (MB) dye. The efficiency obtained under UV irradiation were 20%, 31%, 33%, 41% and efficiency obtained in visible light irradiation were 27%, 42%, 46%, 55% with respect to bare methylene blue (MB), MB with NiMoO4 (2 h), MB with NiMoO4 (4 h), MB with NiMoO4 (6 h) catalyst added. NiMoO4 sample with 6 h stirrer time and fine nanorods growth will be the good candidate for future use.
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Affiliation(s)
| | | | - Rathinam Yuvakkumar
- Department of Physics, Alagappa University, Karaikudi, 630 003, Tamil Nadu, India.
| | - Ganesan Ravi
- Department of Physics, Alagappa University, Karaikudi, 630 003, Tamil Nadu, India.
| | | | | | | | - Dhayalan Velauthapillai
- Faculty of Engineering and Science, Western Norway University of Applied Sciences, Bergen, 5063, Norway.
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Hou JF, Gao JF, Kong LB. A crystalline nickel vanadium oxide@amorphous cobalt boride nanocomposites with enhanced specific capacity for hybrid supercapacitors. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138086] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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44
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Study and Assessment of Defect and Trap Effects on the Current Capabilities of a 4H-SiC-Based Power MOSFET. ELECTRONICS 2021. [DOI: 10.3390/electronics10060735] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A numerical simulation study accounting for trap and defect effects on the current-voltage characteristics of a 4H-SiC-based power metal-oxide-semiconductor field effect transistor (MOSFET) is performed in a wide range of temperatures and bias conditions. In particular, the most penalizing native defects in the starting substrate (i.e., EH6/7 and Z1/2) as well as the fixed oxide trap concentration and the density of states (DoS) at the 4H-SiC/SiO2 interface are carefully taken into account. The temperature-dependent physics of the interface traps are considered in detail. Scattering phenomena related to the joint contribution of defects and traps shift the MOSFET threshold voltage, reduce the channel mobility, and penalize the device current capabilities. However, while the MOSFET on-state resistance (RON) tends to increase with scattering centers, the sensitivity of the drain current to the temperature decreases especially when the device is operating at a high gate voltage (VGS). Assuming the temperature ranges from 300 K to 573 K, RON is about 2.5 MΩ·µm2 for VGS > 16 V with a percentage variation ΔRON lower than 20%. The device is rated to perform a blocking voltage of 650 V.
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45
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Sharma P, Minakshi M, Whale J, Jean-Fulcrand A, Garnweitner G. Effect of the Anionic Counterpart: Molybdate vs. Tungstate in Energy Storage for Pseudo-Capacitor Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:580. [PMID: 33652645 PMCID: PMC7996838 DOI: 10.3390/nano11030580] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 02/21/2021] [Accepted: 02/22/2021] [Indexed: 11/16/2022]
Abstract
Nickel-based bimetallic oxides (BMOs) have shown significant potential in battery-type electrodes for pseudo-capacitors given their ability to facilitate redox reactions. In this work, two bimetallic oxides, NiMoO4 and NiWO4, were synthesized using a wet chemical route. The structure and electrochemical properties of the pseudo-capacitor cathode materials were characterized. NiMoO4 showed superior charge storage performance in comparison to NiWO4, exhibiting a discharge capacitance of 124 and 77 F.g-1, respectively. NiMoO4, moreover, demonstrates better capacity retention after 1000 cycles with 87.14% compared to 82.22% for NiWO4. The lower electrochemical performance of the latter was identified to result from the redox behavior during cycling. NiWO4 reacts in the alkaline solution and forms a passivation layer composed of WO3 on the electrode, while in contrast, the redox behavior of NiMoO4 is fully reversible.
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Affiliation(s)
- Pratigya Sharma
- Engineering and Energy, Murdoch University, Perth, WA 6150, Australia; (P.S.); (J.W.)
| | - Manickam Minakshi
- Engineering and Energy, Murdoch University, Perth, WA 6150, Australia; (P.S.); (J.W.)
| | - Jonathan Whale
- Engineering and Energy, Murdoch University, Perth, WA 6150, Australia; (P.S.); (J.W.)
| | - Annelise Jean-Fulcrand
- Institut für Partikeltechnik, Technische Universität Braunschweig, Volkmaroder Straße 5, 38104 Braunschweig, Germany;
- Laboratory for Emerging Nanometrology, Technische Universität Braunschweig, Langer Kamp 6A, 38106 Braunschweig, Germany
| | - Georg Garnweitner
- Institut für Partikeltechnik, Technische Universität Braunschweig, Volkmaroder Straße 5, 38104 Braunschweig, Germany;
- Laboratory for Emerging Nanometrology, Technische Universität Braunschweig, Langer Kamp 6A, 38106 Braunschweig, Germany
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