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Guji KW, Geleta TA, Bouri N, Ramirez Rivera VJ. First principles study on the structural stability, mechanical stability and optoelectronic properties of alkali-based single halide perovskite compounds XMgI 3 (X = Li/Na): DFT insight. NANOSCALE ADVANCES 2024; 6:4479-4491. [PMID: 39170975 PMCID: PMC11334981 DOI: 10.1039/d4na00305e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Accepted: 06/29/2024] [Indexed: 08/23/2024]
Abstract
Metal-halide perovskites are recognized as cutting-edge solar energy technology, boasting remarkable absorption capabilities, minimal environmental impact, and cost-effectiveness. This study delves into the structural stability, mechanical stability, and optoelectronic properties of lead-free halide perovskites, specifically XMgI3 (X = Li/Na), by utilizing the CASTEP and WIEN2k software along with the GGA-PBE and Tran-Blaha modified Becke-Johnson (TB-mBJ) exchange-correlation functions to compare their electronic properties. The structural and mechanical stabilities were confirmed by assessing their tolerance factor and formation energy and by evaluating their elastic constants, respectively. Using the TB-mBJ exchange-correlation potential function, the calculated indirect band gap values for LiMgI3 and NaMgI3 were 2.474 and 2.556 eV, respectively. These band gaps are suitable for solar energy harvesting due to their broad optical absorption ranging from infrared to visible light. The partial density of states and the total density of states were determined to investigate the contribution of individual atoms. Consequently, this study can guide researchers focusing on the experimental synthesis of these materials at the laboratory scale for in-depth exploration, particularly in applications such as photovoltaics and various optoelectronic devices.
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Affiliation(s)
| | - Tesfaye Abebe Geleta
- Department of Agricultural Chemistry, National Taiwan University Taipei 10617 Taiwan
| | - Nabil Bouri
- Laboratory of Materials Physics and Subatomic, Faculty of Science, University Ibn Tofail BP. 133 14000 Kénitra Morocco
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2
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Geleta TA, Behera D, Bouri N, Rivera VJR, Gonzalo FM. First principles insight into the study of the structural, stability, and optoelectronic properties of alkali-based single halide perovskite ZSnCl 3 (Z = Na/K) materials for photovoltaic applications. J Comput Chem 2024. [PMID: 39007399 DOI: 10.1002/jcc.27465] [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: 11/16/2023] [Revised: 05/03/2024] [Accepted: 06/24/2024] [Indexed: 07/16/2024]
Abstract
Metal halide perovskites are crystalline materials with a sharp increase in popularity and rapidly becoming a major contender for optoelectronic device applications. In this work, we provide the optoelectronic features of a possible novel candidate, ZSnCl3 (Z = Na/K) Sn-based on a detailed numerical simulation. The output of the current computations is compared to the results that are currently available, and a respectable agreement is noted. The studied compounds were cubic in nature and structurally stabe. The mechanical properties reflect the mechanical stability and ductility of the proposed materials. The Sn-based single perovskite compounds proposed in this study are mechanically stable and ductile. The narrow direct band gap for NaSnCl3 and KSnCl3 are 1.36 eV and 1.47 eV, respectively, using the HSE06 hybrid function with the Boltztrp2 integrated in Quantum ESPRESSO (QE) software. The effective use of these compounds in perovskite solar cells and other optoelectronic applications was confirmed by optical absorption spectral measurements conducted in the photon energy range of 0-20 eV.
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Affiliation(s)
- Tesfaye Abebe Geleta
- Department of Agricultural Chemistry, National Taiwan University, Taipei, Taiwan
- Global Development Application Center, MacDermid Alpha Electronics Solutions Company, Taoyuan, Taiwan
| | - Debidatta Behera
- Department of Physics, School of Indigenous Knowledge Science and Technology (IKST), Kalinga Institute of Social Sciences (KISS) DEEMED TO BE UNIVERSITY, Bhubaneswar, India
| | - Nabil Bouri
- Laboratory of Materials Physics and Subatomic, Faculty of Science, University Ibn Tofail, Kénitra, Morocco
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Liu Y, Li Y, Liu Z, Feng T, Lin H, Li G, Wang K. Uniform P-Doped MnMoO 4 Nanosheets for Enhanced Asymmetric Supercapacitors Performance. Molecules 2024; 29:1988. [PMID: 38731479 PMCID: PMC11085725 DOI: 10.3390/molecules29091988] [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: 04/02/2024] [Revised: 04/23/2024] [Accepted: 04/24/2024] [Indexed: 05/13/2024] Open
Abstract
Manganese molybdate has garnered considerable interest in supercapacitor research owing to its outstanding electrochemical properties and nanostructural stability but still suffers from the common problems of transition metal oxides not being able to reach the theoretical specific capacitance and lower electrical conductivity. Doping phosphorus elements is an effective approach to further enhance the electrochemical characteristics of transition metal oxides. In this study, MnMoO4·H2O nanosheets were synthesized on nickel foam via a hydrothermal route, and the MnMoO4·H2O nanosheet structure was successfully doped with a phosphorus element using a gas-solid reaction method. Phosphorus element doping forms phosphorus-metal bonds and oxygen vacancies, thereby increasing the charge storage and conductivity of the electrode material. The specific capacitance value is as high as 2.112 F cm-2 (1760 F g-1) at 1 mA cm-2, which is 3.2 times higher than that of the MnMoO4·H2O electrode (0.657 F cm-2). The P-MnMoO4//AC ASC device provides a high energy density of 41.9 Wh kg-1 at 666.8 W kg-1, with an 84.5% capacity retention after 10,000 charge/discharge cycles. The outstanding performance suggests that P-MnMoO4 holds promise as an electrode material for supercapacitors.
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Affiliation(s)
- Yu Liu
- Institute of Energy Innovation, College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China; (Y.L.); (Z.L.); (T.F.); (G.L.)
| | - Yan Li
- Key Laboratory of Light Field Manipulation and System Integration Applications in Fujian Province, School of Physics and Information Engineering, Minnan Normal University, Zhangzhou 363000, China;
| | - Zhuohao Liu
- Institute of Energy Innovation, College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China; (Y.L.); (Z.L.); (T.F.); (G.L.)
| | - Tao Feng
- Institute of Energy Innovation, College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China; (Y.L.); (Z.L.); (T.F.); (G.L.)
| | - Huichuan Lin
- Key Laboratory of Light Field Manipulation and System Integration Applications in Fujian Province, School of Physics and Information Engineering, Minnan Normal University, Zhangzhou 363000, China;
| | - Gang Li
- Institute of Energy Innovation, College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China; (Y.L.); (Z.L.); (T.F.); (G.L.)
| | - Kaiying Wang
- Department of Microsystems, University of South-Eastern Norway, 3184 Horten, Norway
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4
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Zhang Q, Wang S, Lan Y, Deng J, Fan M, Du G, Zhao W. Enhancing supercapacitor electrochemical performance through acetate-ion intercalation in layered nickel-cobalt double hydroxides. J Colloid Interface Sci 2024; 660:597-607. [PMID: 38266341 DOI: 10.1016/j.jcis.2024.01.105] [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: 10/17/2023] [Revised: 12/29/2023] [Accepted: 01/14/2024] [Indexed: 01/26/2024]
Abstract
Enhancing the performance of layered nickel-cobalt double hydroxides (NiCo-LDH) as electrode materials for supercapacitors represents a promising strategy for optimizing energy storage systems. However, the complexity of the preparation method for electrode materials with enhanced electrochemical performance and the inherent defects of nickel-cobalt LDH remain formidable challenges. In this study, we synthesized acetate-ion-intercalated NiCo-LDH (NCLA) through a simple one-step hydrothermal method. The physical and chemical structural properties and supercapacitor characteristics of the as-prepared NCLA were systematically characterized. The results indicated that the introduction of Ac- engendered a distinctive tetragonal crystal structure in NiCo-LDH, concomitant with a reduced interlayer spacing, thus enhancing structural stability. Electrochemical measurements revealed that NCLA-8 exhibited a specific capacitance of 1032.2 F g-1 at a current density of 1 A g-1 and a high specific capacitance of 922 F g-1 at 10 A g-1, demonstrating a rate performance of 89.3%. Furthermore, NCLA-8 was used to construct the positive electrode of an asymmetric supercapacitor, while the negative electrode was composed of activated carbon. This configuration resulted in an energy density of 67.7 Wh kg-1 at a power density of 800 W kg-1. Remarkably, the asymmetric supercapacitor retained 82.8% of its initial capacitance following 3000 charge-discharge cycles at a current density of 10 A g-1. Thus, this study demonstrates the efficacy of acetate-ion intercalation in enhancing the electrochemical performance of NiCo-LDH, establishing it as a viable electrode material for supercapacitors.
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Affiliation(s)
- Qianqian Zhang
- College of Material Engineering, Fujian Agriculture and Forestry University, 63 Xiyuangong Road, Fuzhou 350002, People's Republic of China
| | - Shirui Wang
- College of Material Engineering, Fujian Agriculture and Forestry University, 63 Xiyuangong Road, Fuzhou 350002, People's Republic of China; College of Materials Science, Chang'an University, South Second Ring Road West Section, Xi'an, Shaanxi 710064, People's Republic of China
| | - Yuling Lan
- College of Material Engineering, Fujian Agriculture and Forestry University, 63 Xiyuangong Road, Fuzhou 350002, People's Republic of China
| | - Jianping Deng
- College of Material Engineering, Fujian Agriculture and Forestry University, 63 Xiyuangong Road, Fuzhou 350002, People's Republic of China
| | - Mizi Fan
- College of Engineering, Design and Physical Sciences, Brunel University, Uxbridge UB8 3PH, London, UK
| | - Guanben Du
- International Joint Research Center for Biomass Materials, Southwest Forestry University, 300 Bailongsi, Kunming 650224, People's Republic of China.
| | - Weigang Zhao
- College of Material Engineering, Fujian Agriculture and Forestry University, 63 Xiyuangong Road, Fuzhou 350002, People's Republic of China; International Joint Research Center for Biomass Materials, Southwest Forestry University, 300 Bailongsi, Kunming 650224, People's Republic of China.
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5
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Dürr R, Maltoni P, Feng S, Ghorai S, Ström P, Tai CW, Araujo RB, Edvinsson T. Clearing Up Discrepancies in 2D and 3D Nickel Molybdate Hydrate Structures. Inorg Chem 2024; 63:2388-2400. [PMID: 38242537 PMCID: PMC10848204 DOI: 10.1021/acs.inorgchem.3c03261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Revised: 12/22/2023] [Accepted: 12/25/2023] [Indexed: 01/21/2024]
Abstract
When electrocatalysts are prepared, modification of the morphology is a common strategy to enhance their electrocatalytic performance. In this work, we have examined and characterized nanorods (3D) and nanosheets (2D) of nickel molybdate hydrates, which previously have been treated as the same material with just a variation in morphology. We thoroughly investigated the materials and report that they contain fundamentally different compounds with different crystal structures, chemical compositions, and chemical stabilities. The 3D nanorod structure exhibits the chemical formula NiMoO4·0.6H2O and crystallizes in a triclinic system, whereas the 2D nanosheet structures can be rationalized with Ni3MoO5-0.5x(OH)x·(2.3 - 0.5x)H2O, with a mixed valence of both Ni and Mo, which enables a layered crystal structure. The difference in structure and composition is supported by X-ray photoelectron spectroscopy, ion beam analysis, thermogravimetric analysis, X-ray diffraction, electron diffraction, infrared spectroscopy, Raman spectroscopy, and magnetic measurements. The previously proposed crystal structure for the nickel molybdate hydrate nanorods from the literature needs to be reconsidered and is here refined by ab initio molecular dynamics on a quantum mechanical level using density functional theory calculations to reproduce the experimental findings. Because the material is frequently studied as an electrocatalyst or catalyst precursor and both structures can appear in the same synthesis, a clear distinction between the two compounds is necessary to assess the underlying structure-to-function relationship and targeted electrocatalytic properties.
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Affiliation(s)
- Robin
N. Dürr
- Department
of Chemistry, Physical Chemistry, Ångström Laboratory, Uppsala University, Uppsala 751 20 ,Sweden
- Université
Paris-Saclay, CEA, CNRS, NIMBE, LICSEN, Gif-sur-Yvette91191 ,France
| | - Pierfrancesco Maltoni
- Department
of Materials Science and Engineering, Solid State Physics, Ångström
Laboratory, Uppsala University, Uppsala751 03 ,Sweden
| | - Shihui Feng
- Department
of Materials and Environmental Chemistry, Stockholm University, Stockholm 106 91 ,Sweden
| | - Sagar Ghorai
- Department
of Materials Science and Engineering, Solid State Physics, Ångström
Laboratory, Uppsala University, Uppsala751 03 ,Sweden
| | - Petter Ström
- Department
of Physics and Astronomy, Applied Nuclear Physics, Ångström
Laboratory, Uppsala University, Uppsala751 20 ,Sweden
| | - Cheuk-Wai Tai
- Department
of Materials and Environmental Chemistry, Stockholm University, Stockholm 106 91 ,Sweden
| | - Rafael B. Araujo
- Department
of Materials Science and Engineering, Solid State Physics, Ångström
Laboratory, Uppsala University, Uppsala751 03 ,Sweden
| | - Tomas Edvinsson
- Department
of Materials Science and Engineering, Solid State Physics, Ångström
Laboratory, Uppsala University, Uppsala751 03 ,Sweden
- Energy Materials
Laboratory, Chemistry: School of Natural and Environmental Science, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom
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6
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Yang S, Tiwari SK, Zhu Z, Cao D, He H, Chen Y, Thummavichai K, Wang N, Jiang M, Zhu Y. In Situ Fabrication of Mn-Doped NiMoO 4 Rod-like Arrays as High Performance OER Electrocatalyst. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:827. [PMID: 36903705 PMCID: PMC10005328 DOI: 10.3390/nano13050827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 02/07/2023] [Accepted: 02/08/2023] [Indexed: 06/18/2023]
Abstract
The slow kinetics of the oxygen evolution reaction (OER) is one of the significant reasons limiting the development of electrochemical hydrolysis. Doping metallic elements and building layered structures have been considered effective strategies for improving the electrocatalytic performance of the materials. Herein, we report flower-like nanosheet arrays of Mn-doped-NiMoO4/NF (where NF is nickel foam) on nickel foam by a two-step hydrothermal method and a one-step calcination method. The doping manganese metal ion not only modulated the morphologies of the nickel nanosheet but also altered the electronic structure of the nickel center, which could be the result of superior electrocatalytic performance. The Mn-doped-NiMoO4/NF electrocatalysts obtained at the optimum reaction time and the optimum Mn doping showed excellent OER activity, requiring overpotentials of 236 mV and 309 mV to drive 10 mA cm-2 (62 mV lower than the pure NiMoO4/NF) and 50 mA cm-2 current densities, respectively. Furthermore, the high catalytic activity was maintained after continuous operation at a current density of 10 mA cm-2 of 76 h in 1 M KOH. This work provides a new method to construct a high-efficiency, low-cost, stable transition metal electrocatalyst for OER electrocatalysts by using a heteroatom doping strategy.
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Affiliation(s)
- Shiming Yang
- Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, Guangxi Key Laboratory of Disaster Prevention and Engineering Safety, State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
- College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter EX4 4QF, UK
| | - Santosh K. Tiwari
- Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, Guangxi Key Laboratory of Disaster Prevention and Engineering Safety, State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
- Department of Chemistry, NMAM Institute of Technology, Nitte (Deemed to be University), Nitte 547110, Karnataka, India
| | - Zhiqi Zhu
- Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, Guangxi Key Laboratory of Disaster Prevention and Engineering Safety, State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
| | - Dehua Cao
- Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, Guangxi Key Laboratory of Disaster Prevention and Engineering Safety, State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
| | - Huan He
- Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, Guangxi Key Laboratory of Disaster Prevention and Engineering Safety, State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
| | - Yu Chen
- College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter EX4 4QF, UK
| | - Kunyapat Thummavichai
- College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter EX4 4QF, UK
- Department of Mathematics, Physics and Electrical Engineering, Faculty of Engineering and Environment, Northumbria University, Newcastle-upon-Tyne NE1 8ST, UK
| | - Nannan Wang
- Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, Guangxi Key Laboratory of Disaster Prevention and Engineering Safety, State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
- College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter EX4 4QF, UK
| | - Mingjie Jiang
- Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, Guangxi Key Laboratory of Disaster Prevention and Engineering Safety, State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
| | - Yanqiu Zhu
- Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, Guangxi Key Laboratory of Disaster Prevention and Engineering Safety, State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures, School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
- College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter EX4 4QF, UK
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7
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Bendary SH, Abdelrahman AA. Flexible and novel counter electrode from graphene/Zn Al layered double hydroxide nanocomposite in dye sensitized solar cells. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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8
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Dalai N, Dash B, Jena B. Bifunctional Activity of PVP K‐30 Assisted Cobalt Molybdate for Electrocatalytic Water Splitting**. ChemistrySelect 2022. [DOI: 10.1002/slct.202202270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Namita Dalai
- Department of Chemistry Utkal University Bhubaneswar 751004 Odisha India
| | - Barsha Dash
- Hydro and Electrometallurgy Division Institute of Mineral and Materials Technology Bhubaneswar 751013 Odisha India
| | - Bijayalaxmi Jena
- Department of Chemistry Utkal University Bhubaneswar 751004 Odisha India
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9
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Hakimyfard A, Samimifar M, Ostadjoola S, Khademinia S, Kafi‐Ahmadi L. L
x
‐β‐NiMoO
4
(L = None, Al, V, Fe, Co) Nanocomposites: Facile Solid‐State Synthesis, Magnetic, Optical, and Electrochemical Properties. CRYSTAL RESEARCH AND TECHNOLOGY 2022. [DOI: 10.1002/crat.202200044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Alireza Hakimyfard
- Department of Physics, Faculty of Science Jundi‐Shapur University of Technology Dezful 64617‐96736 Iran
| | - Mohammad Samimifar
- Department of Chemistry, Faculty of Science Jundi‐Shapur University of Technology Dezful 64617‐96736 Iran
| | - Soroor Ostadjoola
- Department of Physics, Faculty of Science Jundi‐Shapur University of Technology Dezful 64617‐96736 Iran
| | - Shahin Khademinia
- Department of Inorganic Chemistry, Faculty of Chemistry Semnan University Semnan 35131‐ 19111 Iran
| | - Leila Kafi‐Ahmadi
- Department of Inorganic Chemistry, Faculty of Chemistry Urmia University Urmia 57561‐51818 Iran
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10
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Fu H, Wang M, Ma Q, Wang M, Ma X, Ye Y. MnMoO 4-S nanosheets with rich oxygen vacancies for high-performance supercapacitors. NANOSCALE ADVANCES 2022; 4:2704-2712. [PMID: 36132293 PMCID: PMC9417920 DOI: 10.1039/d2na00148a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Accepted: 04/24/2022] [Indexed: 06/15/2023]
Abstract
The structure of materials is closely related to their electrochemical properties. MnMoO4 materials have good stability as supercapacitors but their specific capacitance performance is not excellent. To improve electrochemical performance of MnMoO4, this study conducts secondary hydrothermal treatment in thiourea solution on MnMoO4 electrode material grown on nickel foam synthesized by traditional hydrothermal method. A more compact S-doped MnMoO4 electrode material with more oxygen vacancies and higher specific capacitance was obtained. At the current density of 1 A g-1, the specific capacitance of the composite material reached 2526.7 F g-1, which increased by 140.9% compared with that of ordinary MnMoO4 material. The capacitance retention rate of the composite material was 95.56% after 2000 cycles at 10 A g-1. An asymmetric supercapacitor was fabricated using S-doped MnMoO4 as the positive electrode, activated carbon as the negative electrode, and 6 mol L-1 KOH solution as the electrolyte. The specific capacitance of the assembled supercapacitor was 117.50 F g-1 at 1 A g-1, and a high energy density of 47.16 W h kg-1 at the power density of 849.98 W kg-1 was recorded. This method greatly improves the specific capacitance of MnMoO4 through simple processing, which makes it have great application potential.
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Affiliation(s)
- Hao Fu
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, University of Science and Technology Beijing Beijing 100083 China
| | - Meixin Wang
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, University of Science and Technology Beijing Beijing 100083 China
| | - Qing Ma
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, University of Science and Technology Beijing Beijing 100083 China
| | - Mingwen Wang
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, University of Science and Technology Beijing Beijing 100083 China
| | - Xiping Ma
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, University of Science and Technology Beijing Beijing 100083 China
| | - Yaping Ye
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, University of Science and Technology Beijing Beijing 100083 China
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11
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Lacerda LHDS, San-Miguel MA. Unraveling the MnMoO 4 polymorphism: a comprehensive DFT investigation of α, β, and ω phases. JOURNAL OF MATERIALS SCIENCE 2022; 57:10179-10196. [PMID: 35634516 PMCID: PMC9125973 DOI: 10.1007/s10853-022-07277-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 04/27/2022] [Indexed: 06/15/2023]
Abstract
UNLABELLED The MnMoO4 is an environmentally friendly semiconductor material widely employed in technological devices. This material can be obtained on three different polymorphs, and although such phases were reported decades ago, some obscurity over their structure and properties is still perceived. Thus, this work provides a comprehensive DFT investigation of the α, β, and ω phases of MnMoO4, analyzing their crystalline structure, stability, and electronic and magnetic properties. The results show that all phases of MnMoO4 are stable at room conditions connected by pressure application or long-time high-temperature treatment. The MnMoO4 phases are G-type antiferromagnetic with semiconductor bandgap and have enormous potential to develop magnetic, optical, and electronic devices and photocatalytic-based processes. The results also evidence potential antiviral and antibacterial activities of the three MnMoO4 polymorphs. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s10853-022-07277-7.
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12
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Construction of conductive Ni‐Co‐molybdate solid‐solution nanoparticles encapsulated in carbon nanofibers towards Li‐ion batteries as high‐rate anodes. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2021.139564] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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13
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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: 14] [Impact Index Per Article: 4.7] [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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14
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Ray SK, Hur J. A review on monoclinic metal molybdate photocatalyst for environmental remediation. J IND ENG CHEM 2021. [DOI: 10.1016/j.jiec.2021.06.027] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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15
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Venkatesh K, Rajakumaran R, Chen SM, Karuppiah C, Yang CC, Ramaraj SK, Ali MA, Al-Hemaid FMA, El-Shikh MS, Almunqedhi BMA. A novel hybrid construction of MnMoO 4 nanorods anchored graphene nanosheets; an efficient electrocatalyst for the picomolar detection of ecological pollutant ornidazole in water and urine samples. CHEMOSPHERE 2021; 273:129665. [PMID: 33508687 DOI: 10.1016/j.chemosphere.2021.129665] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 01/10/2021] [Accepted: 01/14/2021] [Indexed: 06/12/2023]
Abstract
Nitroimidazole compounds are widely used antibiotics to encounter anaerobic bacterial and parasitic infections. The wide usage of antibiotic drugs became an ecological contaminant which in turn into potential monitoring. In this regards, we have designed and developed a new electrochemical sensing probe to monitor an antiprotozoal drug, ornidazole (ODZ), with the aid of a glassy carbon electrode (GCE) integrated with manganese molybdate nanorods (MnMoO4) decorated graphene nanosheets (GNS) hybrid materials that prepared by feasible probe sonochemical method (parameters: 2-4 W, 5 mV amp, 20 kHz). The electrochemical investigations of the developed probe were performed by using rapid scan electrochemical workstations namely cyclic voltammetry (CV) and amperometric (i-t) techniques. The as-prepared MnMoO4/GNS nanocomposite was characterized and its purity of nanocomposite formation was confirmed by various analytical techniques like X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), and Raman spectroscopy. In addition to that, the textural morphology of the MnMoO4/GNS nanocomposite was examined with the aid of field emission scanning electron microscopy (FE-SEM) and high-resolution transmission electron microscopy (HR-TEM). The MnMoO4/GNS nanocomposite rotating disk glassy carbon electrode (RDGCE) plays a crucial role in electrochemical detection of ODZ, which results in excellent anti-interference ability, a lower detection limit of 845 pM, massive linear ranges from 10 to 770 nM, and good sensitivity of about 104.62 μA μM-1 cm-2. From the acquired electrochemical studies, we have developed a disposable electrochemical sensor probe using a low-cost screen-printed carbon electrode (SPCE) with MnMoO4/GNS nanocomposite. The MnMoO4/GNS/SPCE are capably employed in real-time sensing of ODZ in water and urine samples. These electrochemical studies revealed the integral new vision on the electrocatalytic performance of the modified SPCE and also shown excellent amplification results in ultra-trace levels.
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Affiliation(s)
- Krishnan Venkatesh
- PG and Research Department of Chemistry, Thiagarajar College, Madurai, Tamil Nadu, India
| | - Ramachandran Rajakumaran
- Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei, 106, Taiwan, ROC
| | - Shen-Ming Chen
- Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei, 106, Taiwan, ROC.
| | - Chelladurai Karuppiah
- Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City, 24301, Taiwan, ROC
| | - Chun-Chen Yang
- Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City, 24301, Taiwan, ROC
| | - Sayee Kannan Ramaraj
- PG and Research Department of Chemistry, Thiagarajar College, Madurai, Tamil Nadu, India.
| | - Mohammad Ajmal Ali
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Fahad M A Al-Hemaid
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Mohammad Suliman El-Shikh
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - B M A Almunqedhi
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
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16
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Krishnapandi A, Muthukutty B, Chen SM, Arul KT, Shiuan HJ, Selvaganapathy M. Bismuth molybdate incorporated functionalized carbon nanofiber as an electrocatalytic tool for the pinpoint detection of organic pollutant in life samples. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 209:111828. [PMID: 33385681 DOI: 10.1016/j.ecoenv.2020.111828] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 12/07/2020] [Accepted: 12/18/2020] [Indexed: 06/12/2023]
Abstract
Herein, we fabricated a feasible and accurate sensing platform for the quantification of toxic organic pollutant 2-nitroaniline (2-NA) in water samples through electrocatalyst made up of bismuth molybdate (Bi2MoO6, BMO) functionalized carbon nanofiber (f-CNF) modified electrode. The preparation of BMO/f-CNF composite is of two methods, such as co-precipitation (C-BMO/f-CNF) and ultrasonication method (U-BMO/f-CNF). The physicochemical properties of the composites were characterized by XRD, FTIR, Raman, BET, FE-SEM, and HR-TEM techniques. At U-BMO/f-CNF, the charge transfer resistance was low (Rct = 12.47 Ω) compared to C-BMO/f-CNF because nanosized U-BMO particles correctly aim at the defective sites of the f-CNF surface wall. Further, the electrocatalytic activity of C&U-BMO/f-CNF composites was examined by cyclic voltammetry (CV) and differential pulse voltammetry techniques (DPV) for the electrochemical detection of 2-nitroaniline (2-NA). The U-BMO/f-CNF/GCE shows a higher cathodic current, wide dynamic linear range of 0.01-168.01 µM, and superior electrocatalytic activity with a low detection limit (0.0437 µM) and good sensitivity (0.6857 μA μM-1 cm-2). The excellent selectivity nature of U-BMO/f-CNF/GCE was observed in the presence of various organic pollutants and a few toxic metal cations. The practical applicability such as stability, repeatability towards 2-NA outcomes with accepted results. Besides, the practical viability of as proposed U-BMO/f-CNF sensor was investigated in soil and lake water samples delivers good recovery results. Hence from these analyses, we conclude that U-BMO/f-CNF/GCE potential for the determination of hazardous environmental pollutant 2-NA.
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Affiliation(s)
- Alagumalai Krishnapandi
- Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC
| | - Balamurugan Muthukutty
- Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC
| | - Shen-Ming Chen
- Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC.
| | - Kumaravelu Thanigai Arul
- Energy and Biophotonic Laboratory, Department of Physics, AMET (Deemed to be University), Kanathur, Chennai, Tamil Nadu 603 112, India
| | - Huang Ji Shiuan
- Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC
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17
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Baby JN, Sriram B, Wang SF, George M, Govindasamy M, Benadict Joseph X. Deep eutectic solvent-based manganese molybdate nanosheets for sensitive and simultaneous detection of human lethal compounds: comparing the electrochemical performances of M-molybdate (M = Mg, Fe, and Mn) electrocatalysts. NANOSCALE 2020; 12:19719-19731. [PMID: 32966483 DOI: 10.1039/d0nr05533f] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Potentially hazardous chemical contaminants endanger the environment and human well-being, challenging scientists and policy makers to develop holistic alternative approaches for remediation. The addition or accumulation of these chemicals can have a series of far-reaching consequences and have direct and indirect effects at multiple levels of ecological organization. Therefore, the development of a sensitive tool for the comprehensive evaluation of chemical concentrations is highly relevant. Herein, we thus report the simultaneous electrochemical detection of highly toxic hydroquinone (HQ), Hg2+, and nitrite (NO2-) compounds using nanostructured metal molybdate (M = Mg, Fe and Mn) catalysts. These functional nanomaterials are synthesized using a deep eutectic solvent (DES) modified hydrothermal method that provides sustainable aspects and energy efficient synthesis strategies. Choline chloride (ChCl)-urea DES used in this study exhibits an all-in-one behaviour by simultaneously acting as a template, reducing agent, and homogeneous means for stabilizing metal ions. This stimulates the fabrication of hierarchical structures of metal molybdates with high surface activities that cause their remarkable properties with minimal waste generation. The structural, morphological, catalytic, and electrochemical capacities of the as-synthesized MgMoO4, Fe2(MoO4)3, and MnMoO4 materials are explored through various techniques and comparatively, MnMoO4 presents superior characterization features such as a reduced particle size, increased surface area and hierarchical architectures. Owing to the exceptional physicochemical attributes, the MnMoO4 modified glassy carbon electrode (GCE) demonstrates superior electrochemical activities towards the individual and simultaneous detection of HQ, Hg2+, and NO2-. Well-defined and separate peaks are observed for the simultaneous detection of HQ, Hg2+, and NO2- which is influenced by the binding energies of these pollutants. Furthermore, the modified electrode exhibits a high sensitivity of 23.8, 17.7 and 10.2 μA μM-1 cm-2 with a limit of detection (LOD) of 0.026, 0.05, and 0.01 μM for HQ, Hg2+, and NO2- respectively under ideal conditions. Also, the reproducibility and anti-interference ability reinforce the application potential of the MnMoO4 modified electrode for the simultaneous electrochemical detection of HQ, Hg2+, and NO2- in real samples with better recoveries, thus assessing the effect of these hazardous chemicals on humanity.
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Affiliation(s)
- Jeena N Baby
- Department of Chemistry, Stella Maris College, Affiliated to the University of Madras, Chennai-600 086, Tamil Nadu, India.
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19
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Isacfranklin M, Rani BJ, Ravi G, Yuvakkumar R, Hong SI, Velauthapillai D, Saravanakumar B. Hydrothermal Method–Derived MnMoO
4
Crystals: Effect of Cationic Surfactant on Microstructures and Electrochemical Properties. ChemistrySelect 2020. [DOI: 10.1002/slct.202001384] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Melkiyur Isacfranklin
- Nanomaterials LaboratoryDepartment of PhysicsAlagappa University Karaikudi 630 003 Tamil Nadu India
| | | | - G. Ravi
- Nanomaterials LaboratoryDepartment of PhysicsAlagappa University Karaikudi 630 003 Tamil Nadu India
| | - Rathinam Yuvakkumar
- Nanomaterials LaboratoryDepartment of PhysicsAlagappa University Karaikudi 630 003 Tamil Nadu India
| | - Sun Ig Hong
- Department of Nanomaterials EngineeringChungnam National University Daejeon, 305–764 South Korea
| | - Dhayalan Velauthapillai
- Faculty of Engineering and ScienceWestern Norway University of Applied Sciences Bergen 5063 Norway
| | - Balasubramaniam Saravanakumar
- Laboratory for Advanced Research in Polymeric Materials (LARPM)Central Institute of Plastics Engineering and Technology (CIPET) Bhubaneswar 751024 Odisha India
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20
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Hsu FH, Hsu SY, Pao CW, Chen JL, Chen CL, Chen JM, Lu KT. Electrochemical properties and mechanism of CoMoO 4@NiWO 4 core-shell nanoplates for high-performance supercapacitor electrode application studied via in situ X-ray absorption spectroscopy. NANOSCALE 2020; 12:13388-13397. [PMID: 32432299 DOI: 10.1039/d0nr00349b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Binary transition metal oxide CoMoO4@NiWO4 core-shell nanoplates grown directly on a Ni foam substrate were synthesized via a facile two-step hydrothermal process. The core-shell nanoplates with high electrochemical surface area (2933 cm2) demonstrated excellent electrochemical properties (areal capacity as high as 0.464 mA h cm-2 at a current density of 5 mA cm-2) and great cycle stability (92.5% retention after 3000 cycles with a high current density of 40 mA cm-2). The mechanism of the electrochemical reactions based on the in situ X-ray absorption spectroscopy technique clearly shows that the Co and Ni elements simultaneously participate in the faradaic reactions with the electrolyte. These results indicate that the excellent electrochemical performance of CoMoO4@NiWO4 compared to that of CoMoO4 nanoplates is attributed to a large electrochemical surface area and synergistic effect between NiWO4 and CoMoO4. This combination of two binary transition metal oxides can hence provide an excellent route to develop a high-performance electrode material for supercapacitor applications.
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Affiliation(s)
- Feng Hao Hsu
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan.
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21
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Raj CJ, Manikandan R, Yu KH, Nagaraju G, Park MS, Kim DW, Park SY, Kim BC. Engineering thermally activated NiMoO4 nanoflowers and biowaste derived activated carbon-based electrodes for high-performance supercapatteries. Inorg Chem Front 2020. [DOI: 10.1039/c9qi01085h] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
NiMoO4 nanoflowers having pure crystalline phases with slight amorphous surface exhibited excellent battery-like electrochemical performance and potential for supercapattery positive electrodes.
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Affiliation(s)
- C. Justin Raj
- Department of Chemistry
- Dongguk University
- Seoul-04620
- Republic of Korea
| | - Ramu Manikandan
- Department of Printed Electronics Engineering
- Sunchon National University
- Jellanamdo 57922
- Republic of Korea
| | - Kook Hyun Yu
- Department of Chemistry
- Dongguk University
- Seoul-04620
- Republic of Korea
| | - Goli Nagaraju
- Department of Chemical Engineering
- College of Engineering
- Kyung Hee University
- Gyeonggi-do 44670
- Republic of Korea
| | - Myung-Soo Park
- Department of Chemical Engineering
- Hanyang University
- Seoul-04763
- Republic of Korea
| | - Dong-Won Kim
- Department of Chemical Engineering
- Hanyang University
- Seoul-04763
- Republic of Korea
| | - Sang Yeup Park
- Department of Ceramic Engineering
- Gangneung-Wonju National University
- Gangneung-25457
- Republic of Korea
| | - Byung Chul Kim
- Department of Printed Electronics Engineering
- Sunchon National University
- Jellanamdo 57922
- Republic of Korea
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22
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Sundaram MM, Appadoo D. Traditional salt-in-water electrolyte vs. water-in-salt electrolyte with binary metal oxide for symmetric supercapacitors: capacitive vs. faradaic. Dalton Trans 2020; 49:11743-11755. [PMID: 32797136 DOI: 10.1039/d0dt01871f] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The electrochemical energy storage of lithium and sodium ions from aqueous solutions in binary metal oxides is of great interest for renewable energy storage applications. Binary metal oxides are of interest for aqueous energy storage due to their better structural stability and electronic conductivity and tunability of redox potentials. They have also been widely studied as novel electrodes for supercapacitors. The interactions between water and lithium/sodium ions, and water and binary metal oxide surface determine the electrochemical reactions and their long-term stability. Our results indicate that the aqueous sodium electrolyte has a stronger influence on the capacitance and cycling stability of the binary (Ca and Mo) metal oxide electrode than its lithium cousin. The symmetric cell in a two-electrode configuration was assembled with the proposed binary metal oxide, which shows an average discharge voltage of 1.2 V, delivering a specific capacitance of 72 F g-1 at a specific energy density of 32 W h kg-1 based on the total mass of the active materials. The development of highly concentrated aqueous electrolytes such as the "water-in-salt" electrolyte showed a larger electrochemical (voltage) window with enhanced storage capacitance for increasing the salt concentrations has also been discussed.
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Affiliation(s)
| | - Dominique Appadoo
- THz-Far Infrared Beamline, ANSTO-Australian Synchrotron, Clayton, Victoria 3168, Australia
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23
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Ab Initio-Based Structural and Thermodynamic Aspects of the Electrochemical Lithiation of Silicon Nanoparticles. Catalysts 2019. [DOI: 10.3390/catal10010008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
We reported the theoretical understandings of the detailed structural and thermodynamic mechanism of the actual lithiation process of silicon nanoparticle systems based on atomistic simulation approaches. We found that the rearrangement of the Si bonding network is the key mechanism of the lithiation process, and that it is less frequently broken by lithiation in the smaller sizes of Si nanoparticles. The decreased lithiation ability of the Si nanoparticles results in the lithiation potential being significantly lower than that of crystalline silicon phases, which impedes the full usage of the theoretical maximum capacity. Thus, nanosized Si materials could have a negative effect on performance if they become too fine-sized. These findings provide a detailed view of the electrochemical lithiation process of silicon nanoparticles (Si NPs) and engineering guidelines for designing new Si-based nanostructured materials.
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Li Z, Zhan X, Zhu W, Qi S, Braun PV. Carbon-Free, High-Capacity and Long Cycle Life 1D-2D NiMoO 4 Nanowires/Metallic 1T MoS 2 Composite Lithium-Ion Battery Anodes. ACS APPLIED MATERIALS & INTERFACES 2019; 11:44593-44600. [PMID: 31682756 DOI: 10.1021/acsami.9b15543] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Both metallic 1T MoS2 and conductive molybdate compounds exhibit interesting electrochemical properties, however, the properties of composite electrodes based on these materials have not been investigated. Here, 1T MoS2 single crystal nanosheets and NiMoO4 single crystal nanowires are synthesized and formed into a carbon-free composite lithium-ion anode using blade- and spray-coating. The composite anodes deliver charge mass specific capacity of 940.1 mAh g-1, while the discharge mass specific capacity is up to 941.6 mAh g-1, with a capacity retention ratio of 84.2% after 750 cycles. The charge and discharge volumetric capacity (porosity of 15.6%, full electrode basis, excluding the current collector) are 1238.7 mAh cm-3 and 1240 mAh cm-3, respectively, and the active materials volume fraction is 82.5%. These capacities significantly exceed that of single 1T MoS2 or single NiMoO4 anodes we reported. We calculate if matched vs a cathode with an average discharge voltage of 4.0 V the gravimetric energy density of the composite electrodes would be 3389.8 Wh kg-1. Electrochemical measurements indicate that the composite electrode has excellent electrochemical reversibility, suggesting that the structure has played a crucial role in the cycling process.
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Affiliation(s)
- Zhao Li
- School of Natural and Applied Sciences , Northwestern Polytechnical University , Xi'an , Shaanxi 710072 , P. R. China
- Department of Materials Science and Engineering, Frederick Seitz Materials Research Laboratory , University of Illinois at Urbana-Champaign , Urbana , Illinois 61801 , United States
| | - Xun Zhan
- Department of Materials Science and Engineering, Frederick Seitz Materials Research Laboratory , University of Illinois at Urbana-Champaign , Urbana , Illinois 61801 , United States
| | - Wenfeng Zhu
- School of Natural and Applied Sciences , Northwestern Polytechnical University , Xi'an , Shaanxi 710072 , P. R. China
| | - Shuhua Qi
- School of Natural and Applied Sciences , Northwestern Polytechnical University , Xi'an , Shaanxi 710072 , P. R. China
| | - Paul V Braun
- Department of Materials Science and Engineering, Frederick Seitz Materials Research Laboratory , University of Illinois at Urbana-Champaign , Urbana , Illinois 61801 , United States
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25
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Yan AL, Wang WD, Chen WQ, Wang XC, Liu F, Cheng JP. The Synthesis of NiCo 2O 4-MnO 2 Core-Shell Nanowires by Electrodeposition and Its Supercapacitive Properties. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E1398. [PMID: 31581488 PMCID: PMC6835400 DOI: 10.3390/nano9101398] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 09/22/2019] [Accepted: 09/26/2019] [Indexed: 11/28/2022]
Abstract
Hierarchical composite films grown on current collectors are popularly reported to be directly used as electrodes for supercapacitors. Highly dense and conductive NiCo2O4 nanowires are ideal backbones to support guest materials. In this work, low crystalline MnO2 nanoflakes are electrodeposited onto the surface of NiCo2O4 nanowire films pre-coated on nickel foam. Each building block in the composite films is a NiCo2O4-MnO2 core-shell nanowire on conductive nickel foam. Due to the co-presence of MnO2 and NiCo2O4, the MnO2@NiCo2O4@Ni electrode exhibits higher specific capacitance and larger working voltage than the NiCo2O4@Ni electrode. It can have a high specific capacitance of 1186 F·g-1 at 1 A·g-1. When the core-shell NiCo2O4-MnO2 composite and activated carbon are assembled as a hybrid capacitor, it has the highest energy density of 29.6 Wh·kg-1 at a power density of 425 W·kg-1 with an operating voltage of 1.7 V. This work shows readers an easy method to synthesize composite films for energy storage.
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Affiliation(s)
- Ai-Lan Yan
- College of Water Resources and Environmental Engineering, Zhejiang University of Water Resources and Electric Power, Hangzhou 310018, China.
| | - Wei-Dong Wang
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Wen-Qiang Chen
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Xin-Chang Wang
- Key Laboratory of Material Physics of Ministry of Education, Zhengzhou University, Zhengzhou 450052, China.
| | - Fu Liu
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China.
| | - Ji-Peng Cheng
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China.
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26
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Sharma GP, Pala RGS, Sivakumar S. Ultrasmall NiMoO4 robust nanoclusters-active carbon composite for high performance extrinsic pseudocapacitor. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.06.039] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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27
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Electrochemical performance of carbon paper supercapacitor using sodium molybdate gel polymer electrolyte and nickel molybdate electrode. J Solid State Electrochem 2019. [DOI: 10.1007/s10008-019-04260-2] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Biswal A, Panda P, Jiang ZT, Tripathy B, Minakshi M. Facile synthesis of a nanoporous sea sponge architecture in a binary metal oxide. NANOSCALE ADVANCES 2019; 1:1880-1892. [PMID: 36134210 PMCID: PMC9418782 DOI: 10.1039/c8na00402a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 03/04/2019] [Indexed: 05/07/2023]
Abstract
A novel galvanostatic electrochemical technique has been employed to synthesize a cobalt-nickel mixed oxide, a binary metal oxide, via a two-step route involving electrodeposition followed by calcination. A diaphragm cell was used for the electro-deposition of the binary hydroxide at room temperature in which the electrolyte comprises a nitrate and/or sulphate bath of the corresponding metal ions at pH 4. The electrodeposited product was calcined at 300 °C to obtain the desired oxide material. The formation of the binary metal oxide has been confirmed by X-ray diffraction analysis. The scanning electron microscopy images associated with energy dispersive analysis (EDS) suggest the formation of a nanoporous sea sponge architecture consisting of an interconnected array of nanosheets aligned perpendicular to each other. The elemental mapping analysis of the binary oxide illustrated the uniformity in the distribution of Co and Ni in the composite material. The TEM image shows that binary oxides are nanocrystalline materials. A nitrogen adsorption-desorption study supports the pore size distribution behaviour of the synthesized material. The hybrid capacitor based on the binary metal oxide cathode and activated carbon anode displayed a capacitive behaviour with a capacitance of 76 F g-1 at a current rate of 2 mA with 98% efficiency after 1000 cycles. Due to the unique interconnected porous network and the role of binary cations, Co-Ni oxide exhibits superior electrochemical behaviour. The synthesis of binary oxides forming various morphologies, such as hexagonal, flower-shape, and sea sponge has been discussed.
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Affiliation(s)
- Avijit Biswal
- Department of Chemistry, College of Engineering & Technology Bhubaneswar 751029 India
| | - Prasanna Panda
- CSIR-Institute of Minerals and Materials Technology Bhubaneswar 751013 India
- Academy of Scientific and Innovative Research Ghaziabad 201 002 India
| | - Zhong-Tao Jiang
- School of Engineering and Information Technology, Murdoch University WA 6150 Australia
| | - Bankim Tripathy
- CSIR-Institute of Minerals and Materials Technology Bhubaneswar 751013 India
- Academy of Scientific and Innovative Research Ghaziabad 201 002 India
| | - Manickam Minakshi
- School of Engineering and Information Technology, Murdoch University WA 6150 Australia
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29
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Lin J, Yao L, Li Z, Zhang P, Zhong W, Yuan Q, Deng L. Hybrid hollow spheres of carbon@Co xNi 1-xMoO 4 as advanced electrodes for high-performance asymmetric supercapacitors. NANOSCALE 2019; 11:3281-3291. [PMID: 30720805 DOI: 10.1039/c8nr09497g] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Combining pseudocapacitive materials with conductive substrates is an effective approach to enhance the overall performance of electrodes for supercapacitors. Herein, NiMoO4 nanosheets were grown on the surface of porous carbon nanospheres (PCNS) that were derived from cyclodextrin, resulting in PCNS@NiMoO4 hollow nanospheres. Co was further doped into NiMoO4 which gave rise to a composite PCNS@CoxNi1-xMoO4. The capacitive performance of these materials was systematically examined. Compared with pure NiMoO4 and PCNS@NiMoO4, PCNS@Co0.21Ni0.79MoO4 showed the highest specific capacitance of 954 F g-1 at 1 A g-1 and an extraordinary rate performance of 92.8% retention at 40 A g-1, which are significantly higher than those of PCNS@NiMoO4 and pure NiMoO4. This enhancement was due to the fact that PCNS provides high electrical conductivity, the hollow structure enables excellent contact and facile penetration of the electrolyte into the active material, and Co doping further improves the electrical conductivity and provides extra redox reaction sites. By using PCNS@Co0.21Ni0.79MoO4 as the positive electrode and activated carbon (AC) as the negative electrode, an asymmetric supercapacitor was fabricated. Such a device delivered an energy density of 36.7 W h kg-1 at a power density of 346.4 W kg-1, and an outstanding cycling stability with 90.2% retention of its initial capacitance after 5000 cycles of charge and discharge.
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Affiliation(s)
- Junsheng Lin
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China.
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Minakshi M, Mitchell DRG, Baur C, Chable J, Barlow AJ, Fichtner M, Banerjee A, Chakraborty S, Ahuja R. Phase evolution in calcium molybdate nanoparticles as a function of synthesis temperature and its electrochemical effect on energy storage. NANOSCALE ADVANCES 2019; 1:565-580. [PMID: 36132277 PMCID: PMC9473258 DOI: 10.1039/c8na00156a] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 10/07/2018] [Indexed: 05/28/2023]
Abstract
The design of a suitable electrode is an essential and fundamental research challenge in the field of electrochemical energy storage because the electronic structures and morphologies determine the surface redox reactions. Calcium molybdate (CaMoO4) was synthesized by a combustion route at 300 °C and 500 °C. We describe new findings on the behaviour of CaMoO4 and evaluate the influence of crystallinity on energy storage performance. A wide range of characterization techniques was used to obtain detailed information about the physical and morphological characteristics of CaMoO4. The characterization results enable the phase evolution as a function of the electrode synthesis temperature to be understood. The crystallinity of the materials was found to increase with increasing temperature but with no second phases observed. Molecular dynamics simulation of electronic structures correlated well with the experimental findings. These results show that to enable faster energy storage and release for a given surface area, amorphous CaMoO4 is required, while larger energy storage can be obtained by using crystalline CaMoO4. CaMoO4 has been evaluated as a cathode material in classical lithium-ion batteries recently. However, determining the surface properties in a sodium-ion system experimentally, combined with computational modelling to understand the results has not been reported. The superior electrochemical properties of crystalline CaMoO4 are attributed to its morphology providing enhanced Na+ ion diffusivity and electron transport. However, the presence of carbon in amorphous CaMoO4 resulted in excellent rate capability, suitable for supercapacitor applications.
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Affiliation(s)
- Manickam Minakshi
- Engineering and Information Technology, Murdoch University WA 6150 Australia
- Helmholtz Institute Ulm for Electrochemical Energy Storage (HIU) Ulm 89081 Germany
| | - David R G Mitchell
- Electron Microscopy Centre, Australian Institute for Innovative Materials, University of Wollongong, Innovation Campus North Wollongong NSW 2500 Australia
| | - Christian Baur
- Helmholtz Institute Ulm for Electrochemical Energy Storage (HIU) Ulm 89081 Germany
| | - Johann Chable
- Helmholtz Institute Ulm for Electrochemical Energy Storage (HIU) Ulm 89081 Germany
| | - Anders J Barlow
- Centre for Materials and Surface Science, La Trobe University Bundoora VIC 3086 Australia
| | - Maximilian Fichtner
- Helmholtz Institute Ulm for Electrochemical Energy Storage (HIU) Ulm 89081 Germany
| | - Amitava Banerjee
- Condensed Matter Theory Group, Materials Theory Division, Department of Physics and Astronomy, Uppsala University S-75120 Sweden
| | - Sudip Chakraborty
- Condensed Matter Theory Group, Materials Theory Division, Department of Physics and Astronomy, Uppsala University S-75120 Sweden
| | - Rajeev Ahuja
- Condensed Matter Theory Group, Materials Theory Division, Department of Physics and Astronomy, Uppsala University S-75120 Sweden
- Applied Materials Physics, Department of Materials and Engineering, Royal Institute of Technology (KTH) S-100 44 Stockholm Sweden
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31
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Sekhar SC, Nagaraju G, Ramulu B, Yu JS. Hierarchically Designed Ag@Ce 6Mo 10O 39 Marigold Flower-Like Architectures: An Efficient Electrode Material for Hybrid Supercapacitors. ACS APPLIED MATERIALS & INTERFACES 2018; 10:36976-36987. [PMID: 30296058 DOI: 10.1021/acsami.8b12527] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We facilely prepared silver nanoparticle-decorated Ce6Mo10O39 marigold flower-like structures (Ag NPs@CM MFs) for use as an effective positive material in hybrid supercapacitors (HSCs). With the aid of ethylenediaminetetraacetic acid (EDTA) as a chelating agent, self-assembled CM MFs were synthesized by a single-step hydrothermal method. When the electrochemical properties were tested in an aqueous alkaline electrolyte, the synthesized CM MFs with 0.15 g of EDTA exhibited a relatively high charge storage property (55.3 μA h/cm2 at 2 mA/cm2) with a battery-type redox behavior. The high capacity performance is mainly because of the large surface area of the CM MFs, and the hierarchically connected nanoflakes provide wide open wells for rapid accessibility of electrolyte ions and enable fast transportation of electrons. A further improvement in electrochemical performance was achieved (62 μA h/cm2 at 2 mA/cm2) by decorating Ag NPs on the surface of the CM MFs (i.e., Ag NPs@CM MFs), which is attributed to the increased electric conductivity. Considering the synergistic effect and the high electrochemical activity, Ag NPs@CM MFs were further employed as an effective positive electrode for the fabrication of pouch-type HSC with porous carbon (negative electrode) in an alkaline electrolyte. The HSC exhibited a high cell potential (1.5 V) with maximum energy and power densities of 0.0183 mW h/cm2 and 10.237 mW/cm2, respectively. The potency of HSC in practical applications was also demonstrated by energizing red and yellow light-emitting diodes as well as a three-point pattern torch light.
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Kannan V, Kim HJ, Park HC, Kim HS. Single-Step Direct Hydrothermal Growth of NiMoO₄ Nanostructured Thin Film on Stainless Steel for Supercapacitor Electrodes. NANOMATERIALS (BASEL, SWITZERLAND) 2018; 8:E563. [PMID: 30042290 PMCID: PMC6116226 DOI: 10.3390/nano8080563] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/24/2018] [Revised: 07/12/2018] [Accepted: 07/21/2018] [Indexed: 11/16/2022]
Abstract
We report a facile and direct growth of NiMoO₄ nanostructures on a nonreactive stainless steel substrate using a single-step hydrothermal method and investigated hydrothermal growth duration effects on morphology and electrochemical characteristics. The highest specific capacitances of 341, 619, and 281 F/g were observed for NiMoO₄ with 9, 18, and 27 h growth, respectively, at 1 A/g. Thus, grown samples preserved almost 59% of maximum specific capacitance at a high current density of 10 A/g. All samples exhibited a respectable cycling stability over 3000 charge-discharge operations. NiMoO₄ grown for 18 h exhibited 7200 W/kg peak power density at 14 Wh/kg energy density. Thus, the proposed single-step hydrothermal growth is a promising route to obtain NiMoO₄ nanostructures and other metal oxide electrodes for supercapacitor applications.
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Affiliation(s)
- V Kannan
- Millimeter-Wave Innovation Technology Research Center (MINT), Dongguk University-Seoul, Seoul 04620, Korea.
| | - Hyun-Jung Kim
- Division of Electronics and Electrical Engineering, Dongguk University-Seoul, Seoul 04620, Korea.
| | - Hyun-Chang Park
- Division of Electronics and Electrical Engineering, Dongguk University-Seoul, Seoul 04620, Korea.
| | - Hyun-Seok Kim
- Division of Electronics and Electrical Engineering, Dongguk University-Seoul, Seoul 04620, Korea.
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33
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Minakshi M, Mitchell DRG, Munnangi AR, Barlow AJ, Fichtner M. New insights into the electrochemistry of magnesium molybdate hierarchical architectures for high performance sodium devices. NANOSCALE 2018; 10:13277-13288. [PMID: 29971297 DOI: 10.1039/c8nr03824d] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Magnesium molybdate (MgMoO4), which possesses synergistic features combining both hierarchical plate-like nanomaterials and porous architectures, has been successfully synthesized through a facile combustion synthesis at a low temperature. The hierarchical architecture is characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), scanning transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS) analyses. The as-obtained MgMoO4 nanoplates showed a porous structure with a pore-size distribution ranging from 50 to 70 nm. This porosity provides an electron transport pathway and enhanced surface reaction kinetics. The binding energies measured for Mg 2p, Mo 3d, 3p and O 1s are consistent with the literature, and with the metal ions being present as M(ii) and M(vi) states, respectively. This indicates that the oxidation states of the metal cations are as expected. The electrochemical behaviour of MgMoO4 was investigated using aqueous (NaOH) and non-aqueous solvents (NaClO4 in EC : DMC : FEC) for supercapacitor and battery applications. The sodium-ion capacitor involves ion absorption and insertion into the MgMoO4 electrodes resulting in superior power and energy densities. However, the cycling stability was found to be stable only for an aqueous system. The formation of a solid electrolyte surface layer restricted the reversible capacity of the MgMoO4 in the sodium-battery. Nevertheless, it does offer some promise as an anode material for storing energy with high rate performance and excellent capacity retention. Detailed comparative analyses of various electrolytes in storage devices such as hybrid sodium-ion capacitors and sodium-ion batteries are vital for the integration of hierarchical structured materials into practical applications. The reaction mechanisms are postulated.
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Affiliation(s)
- Manickam Minakshi
- School of Engineering and Information Technology, Murdoch University, WA 6150, Australia.
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Li W, Wang X, Hu Y, Sun L, Gao C, Zhang C, Liu H, Duan M. Hydrothermal Synthesized of CoMoO 4 Microspheres as Excellent Electrode Material for Supercapacitor. NANOSCALE RESEARCH LETTERS 2018; 13:120. [PMID: 29693212 PMCID: PMC5915980 DOI: 10.1186/s11671-018-2540-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Accepted: 04/17/2018] [Indexed: 05/25/2023]
Abstract
The single-phase CoMoO4 was prepared via a facile hydrothermal method coupled with calcination treatment at 400 °C. The structures, morphologies, and electrochemical properties of samples with different hydrothermal reaction times were investigated. The microsphere structure, which consisted of nanoflakes, was observed in samples. The specific capacitances at 1 A g-1 are 151, 182, 243, 384, and 186 F g-1 for samples with the hydrothermal times of 1, 4, 8, 12, and 24 h, respectively. In addition, the sample with the hydrothermal time of 12 h shows a good rate capability, and there is 45% retention of initial capacitance when the current density increases from 1 to 8 A g-1. The high retain capacitances of samples show the fine long-cycle stability after 1000 charge-discharge cycles at current density of 8 A g-1. The results indicate that CoMoO4 samples could be a choice of excellent electrode materials for supercapacitor.
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Affiliation(s)
- Weixia Li
- Laboratory of Functional Materials and Henan Key Laboratory of Photovoltaic Materials, College of Physics and Materials Science, Henan Normal University, No. 46 Construction East Road, Xinxiang, 453007 Henan China
| | - Xianwei Wang
- Laboratory of Functional Materials and Henan Key Laboratory of Photovoltaic Materials, College of Physics and Materials Science, Henan Normal University, No. 46 Construction East Road, Xinxiang, 453007 Henan China
| | - Yanchun Hu
- Laboratory of Functional Materials and Henan Key Laboratory of Photovoltaic Materials, College of Physics and Materials Science, Henan Normal University, No. 46 Construction East Road, Xinxiang, 453007 Henan China
| | - Lingyun Sun
- Laboratory of Functional Materials and Henan Key Laboratory of Photovoltaic Materials, College of Physics and Materials Science, Henan Normal University, No. 46 Construction East Road, Xinxiang, 453007 Henan China
| | - Chang Gao
- Laboratory of Functional Materials and Henan Key Laboratory of Photovoltaic Materials, College of Physics and Materials Science, Henan Normal University, No. 46 Construction East Road, Xinxiang, 453007 Henan China
| | - Cuicui Zhang
- Laboratory of Functional Materials and Henan Key Laboratory of Photovoltaic Materials, College of Physics and Materials Science, Henan Normal University, No. 46 Construction East Road, Xinxiang, 453007 Henan China
| | - Han Liu
- Laboratory of Functional Materials and Henan Key Laboratory of Photovoltaic Materials, College of Physics and Materials Science, Henan Normal University, No. 46 Construction East Road, Xinxiang, 453007 Henan China
| | - Meng Duan
- Laboratory of Functional Materials and Henan Key Laboratory of Photovoltaic Materials, College of Physics and Materials Science, Henan Normal University, No. 46 Construction East Road, Xinxiang, 453007 Henan China
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35
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Mogulkoc A, Mogulkoc Y, Modarresi M, Alkan B. Electronic structure and optical properties of novel monolayer gallium nitride and boron phosphide heterobilayers. Phys Chem Chem Phys 2018; 20:28124-28134. [DOI: 10.1039/c8cp05529g] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An external electric field modifies the electronic structure, charge distribution and energy band gap in the heterobilayer of gallium nitride/boron phosphide.
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Affiliation(s)
- A. Mogulkoc
- Department of Physics
- Faculty of Sciences
- Ankara University
- Tandogan
- Turkey
| | - Y. Mogulkoc
- Department of Physics Engineering
- Faculty of Engineering
- Ankara University
- Tandogan
- Turkey
| | - M. Modarresi
- Department of Physics
- Ferdowsi University of Mashhad
- Mashhad
- Iran
- Laboratory of Organic Electronics, Department of Science and Technology, Campus Norrköping, Linköping University
| | - B. Alkan
- Department of Physics Engineering
- Faculty of Engineering
- Ankara University
- Tandogan
- Turkey
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36
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Ding S, Du X, Yang Y, Wang P, Zhang Z, Hao X, Peng C, Guan G. Theoretical and experimental investigations of the electronic/ionic conductivity and deprotonation of Ni3−xCoxAl-LDHs in an electrochemical energy storage system. Phys Chem Chem Phys 2018; 20:17313-17323. [DOI: 10.1039/c8cp01247d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A schematic illustration of the mechanism of enhanced electrochemical performance by doping Co species.
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Affiliation(s)
- Shengqi Ding
- Department of Chemical Engineering
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
| | - Xiao Du
- Department of Chemical Engineering
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
| | - Yanyan Yang
- Department of Chemical Engineering
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
| | - Peifen Wang
- Department of Chemical Engineering
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
| | - Zhonglin Zhang
- Department of Chemical Engineering
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
| | - Xiaogang Hao
- Department of Chemical Engineering
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
| | - Changjun Peng
- State Key Laboratory of Chemical Engineering and Department of Chemistry
- East China University of Science and Technology
- Shanghai
- P. R. China
| | - Guoqing Guan
- Energy Conversion Engineering Group
- Institute of Regional Innovation (IRI)
- Hirosaki University
- Aomori 030-0813
- Japan
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37
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Zhang C, Wu D, Shi L, Zhu Y, Xiong D, Xu S, Huang R, Qi R, Zhang W, Wang L, Chu PK. Manganese molybdate nanoflakes on silicon microchannel plates as novel nano energetic material. ROYAL SOCIETY OPEN SCIENCE 2017; 4:171229. [PMID: 29308255 PMCID: PMC5750022 DOI: 10.1098/rsos.171229] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Accepted: 11/08/2017] [Indexed: 06/07/2023]
Abstract
Nano energetic materials have attracted great attention recently owing to their potential applications for both civilian and military purposes. By introducing silicon microchannel plates (Si-MCPs) three-dimensional (3D)-ordered structures, monocrystalline MnMoO4 with a size of tens of micrometres and polycrystalline MnMoO4 nanoflakes are produced on the surface and sidewall of nickel-coated Si-MCP, respectively. The MnMoO4 crystals ripen controllably forming polycrystalline nanoflakes with lattice fringes of 0.542 nm corresponding to the [Formula: see text] plane on the sidewall. And these MnMoO4 nanoflakes show apparent thermite performance which is rarely reported and represents MnMoO4 becoming a new category of energetic materials after nanocrystallization. Additionally, the nanocrystallization mechanism is interpreted by ionic diffusion caused by 3D structure. The results indicate that the Si-MCP is a promising substrate for nanocrystallization of energetic materials such as MnMoO4.
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Affiliation(s)
- Chi Zhang
- Key Laboratory of Polar Materials and Devices, Ministry of Education, and Department of Electronic Engineering, East China Normal University, Shanghai 200241, People's Republic of China
- Shanghai Key Laboratory of Multidimensional Information Processing, East China Normal University, Shanghai 200241, People's Republic of China
| | - Dajun Wu
- Key Laboratory of Polar Materials and Devices, Ministry of Education, and Department of Electronic Engineering, East China Normal University, Shanghai 200241, People's Republic of China
- School of Physics and Electronic Engineering, Changshu Institute of Technology, Suzhou 215500, People's Republic of China
| | - Liming Shi
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, People's Republic of China
| | - Yiping Zhu
- Key Laboratory of Polar Materials and Devices, Ministry of Education, and Department of Electronic Engineering, East China Normal University, Shanghai 200241, People's Republic of China
- Shanghai Key Laboratory of Multidimensional Information Processing, East China Normal University, Shanghai 200241, People's Republic of China
| | - Dayuan Xiong
- Key Laboratory of Polar Materials and Devices, Ministry of Education, and Department of Electronic Engineering, East China Normal University, Shanghai 200241, People's Republic of China
- Shanghai Key Laboratory of Multidimensional Information Processing, East China Normal University, Shanghai 200241, People's Republic of China
| | - Shaohui Xu
- Key Laboratory of Polar Materials and Devices, Ministry of Education, and Department of Electronic Engineering, East China Normal University, Shanghai 200241, People's Republic of China
| | - Rong Huang
- Key Laboratory of Polar Materials and Devices, Ministry of Education, and Department of Electronic Engineering, East China Normal University, Shanghai 200241, People's Republic of China
| | - Ruijuan Qi
- Key Laboratory of Polar Materials and Devices, Ministry of Education, and Department of Electronic Engineering, East China Normal University, Shanghai 200241, People's Republic of China
| | - Wenchao Zhang
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, People's Republic of China
| | - Lianwei Wang
- Key Laboratory of Polar Materials and Devices, Ministry of Education, and Department of Electronic Engineering, East China Normal University, Shanghai 200241, People's Republic of China
- Shanghai Key Laboratory of Multidimensional Information Processing, East China Normal University, Shanghai 200241, People's Republic of China
- Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, People's Republic of China
| | - Paul K. Chu
- Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, People's Republic of China
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38
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Jiang D, Lan J, Zhao W, Zhang Z, Lan Y. Activation of chrysocolla flotation by organic chelating agents. RSC Adv 2017. [DOI: 10.1039/c7ra05239a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Activation of chrysocolla by organic Cu-chelating agents was studied using a series of test and analysis methods, revealing that the performance of these agents was related to their chemical activity and chrysocolla dissolution properties.
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Affiliation(s)
- D. Jiang
- School of Materials Science and Engineering
- Shanghai University
- Shanghai 200072
- China
| | - J. Lan
- Shanghai Film Academy
- Shanghai University
- Shanghai 200072
- China
| | - W. Zhao
- Kunming Professional College of Arts
- Kunming 650073
- China
| | | | - Y. Lan
- Yunnan University
- Kunming 650091
- China
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