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Rehman AU, Fayaz M, Lv H, Liu Y, Zhang J, Wang Y, Du L, Wang R, Shi K. Controllable Synthesis of a Porous PEI-Functionalized Co 3O 4/rGO Nanocomposite as an Electrochemical Sensor for Simultaneous as Well as Individual Detection of Heavy Metal Ions. ACS OMEGA 2022; 7:5870-5882. [PMID: 35224348 PMCID: PMC8867791 DOI: 10.1021/acsomega.1c05989] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 01/27/2022] [Indexed: 06/14/2023]
Abstract
The present study focuses on the strategy of employing an electrochemical sensor with a porous polyethylenimine (PEI)-functionalized Co3O4/reduced graphene oxide (rGO) nanocomposite (NCP) to detect heavy metal ions (HMIs: Cd2+, Pb2+, Cu2+, and Hg2+). The porous PEI-functionalized Co3O4/rGO NCP (rGO·Co3O4·PEI) was prepared via a hydrothermal method. The synthesized NCP was based on a conducting polymer PEI, rGO, nanoribbons of Co3O4, and highly dispersed Co3O4 nanoparticles (NPs), which have shown excellent performance in the detection of HMIs. The as-prepared PEI-functionalized rGO·Co3O4·PEI NCP-modified electrode was used for the sensing/detection of HMIs by means of both square wave anodic stripping voltammetry (SWV) and differential normal pulse voltammetry (DNPV) methods for the first time. Both methods were employed for the simultaneous detection of HMIs, whereas SWV was employed for the individual analysis as well. The limits of detection (LOD; 3σ method) for Cd2+, Pb2+, Cu2+, and Hg2+ determined using the rGO·Co3O4·PEI NCP-modified electrode were 0.285, 1.132, 1.194, and 1.293 nM for SWV, respectively. Similarly, LODs of Cd2+, Pb2+, Cu2+, and Hg2+ were 1.069, 0.285, 2.398, and 1.115 nM, respectively, by DNPV during simultaneous analysis, whereas they were 0.484, 0.878, 0.462, and 0.477 nM, respectively, by SWV in individual analysis.
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Affiliation(s)
- Afrasiab Ur Rehman
- Department
of Chemistry, Khushal Khan Khattak University,
Karak, 27200 Karak, Khyber Pakhtunkhawa, Pakistan
- Key
Laboratory of Functional Inorganic Material Chemistry, Ministry of
Education. School of Chemistry and Material Science, Heilongjiang University, Harbin 150080, P. R. China
| | - Muhammad Fayaz
- Department
of Chemistry, Khushal Khan Khattak University,
Karak, 27200 Karak, Khyber Pakhtunkhawa, Pakistan
| | - He Lv
- Key
Laboratory of Functional Inorganic Material Chemistry, Ministry of
Education. School of Chemistry and Material Science, Heilongjiang University, Harbin 150080, P. R. China
| | - Yang Liu
- Key
Laboratory of Functional Inorganic Material Chemistry, Ministry of
Education. School of Chemistry and Material Science, Heilongjiang University, Harbin 150080, P. R. China
| | - Jiawei Zhang
- Modern
Experiment Center, Harbin Normal University, Harbin 150025, P. R. China
| | - Yang Wang
- Key
Laboratory of Functional Inorganic Material Chemistry, Ministry of
Education. School of Chemistry and Material Science, Heilongjiang University, Harbin 150080, P. R. China
| | - Lijuan Du
- Modern
Experiment Center, Harbin Normal University, Harbin 150025, P. R. China
| | - Ruihong Wang
- Key
Laboratory of Functional Inorganic Material Chemistry, Ministry of
Education. School of Chemistry and Material Science, Heilongjiang University, Harbin 150080, P. R. China
| | - Keying Shi
- Key
Laboratory of Functional Inorganic Material Chemistry, Ministry of
Education. School of Chemistry and Material Science, Heilongjiang University, Harbin 150080, P. R. China
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Tran QN, Vo TN, Kim IT, Kim JH, Lee DH, Park SJ. Nanocrystalline Cellulose Supported MnO 2 Composite Materials for High-Performance Lithium-Ion Batteries. MATERIALS 2021; 14:ma14216619. [PMID: 34772145 PMCID: PMC8587563 DOI: 10.3390/ma14216619] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Revised: 11/01/2021] [Accepted: 11/02/2021] [Indexed: 12/02/2022]
Abstract
The rate capability and poor cycling stability of lithium-ion batteries (LIBs) are predominantly caused by the large volume expansion upon cycling and poor electrical conductivity of manganese dioxide (MnO2), which also exhibits the highest theoretical capacity among manganese oxides. In this study, a nanocomposite of nanosized MnO2 and pyrolyzed nanocrystalline cellulose (CNC) was prepared with high electrical conductivity to enhance the electrochemical performance of LIBs. The nanocomposite electrode showed an initial discharge capacity of 1302 mAh g−1 at 100 mA g−1 and exhibited a high discharge capacity of 305 mAh g−1 after 1000 cycles. Moreover, the MnO2-CNC nanocomposite delivered a good rate capability of up to 10 A g−1 and accommodated the large volume change upon repeated cycling tests.
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Affiliation(s)
- Quang Nhat Tran
- Department of Chemical and Biological Engineering, Gachon University, Seongnam 13120, Gyeonggi-do, Korea; (Q.N.T.); (T.N.V.); (I.T.K.); (J.H.K.)
| | - Thuan Ngoc Vo
- Department of Chemical and Biological Engineering, Gachon University, Seongnam 13120, Gyeonggi-do, Korea; (Q.N.T.); (T.N.V.); (I.T.K.); (J.H.K.)
| | - Il Tae Kim
- Department of Chemical and Biological Engineering, Gachon University, Seongnam 13120, Gyeonggi-do, Korea; (Q.N.T.); (T.N.V.); (I.T.K.); (J.H.K.)
| | - Ji Hyeon Kim
- Department of Chemical and Biological Engineering, Gachon University, Seongnam 13120, Gyeonggi-do, Korea; (Q.N.T.); (T.N.V.); (I.T.K.); (J.H.K.)
| | - Dal Ho Lee
- Department of Electronics Engineering, Gachon University, Seongnam 13120, Gyeonggi-do, Korea;
| | - Sang Joon Park
- Department of Chemical and Biological Engineering, Gachon University, Seongnam 13120, Gyeonggi-do, Korea; (Q.N.T.); (T.N.V.); (I.T.K.); (J.H.K.)
- Correspondence: ; Tel.: +82-31-750-5358; Fax: +82-31-750-5363
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Graphene intercalated free-standing carbon paper coated with MnO2 for anode materials of lithium ion batteries. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136310] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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4
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Facile Synthesis of Co 3O 4@CoO@Co Gradient Core@Shell Nanoparticles and Their Applications for Oxygen Evolution and Reduction in Alkaline Electrolytes. MATERIALS 2020; 13:ma13122703. [PMID: 32545822 PMCID: PMC7344865 DOI: 10.3390/ma13122703] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 06/02/2020] [Accepted: 06/08/2020] [Indexed: 11/17/2022]
Abstract
We demonstrate a facile fabrication scheme for Co3O4@CoO@Co (gradient core@shell) nanoparticles on graphene and explore their electrocatalytic potentials for an oxygen evolution reaction (OER) and an oxygen reduction reaction (ORR) in alkaline electrolytes. The synthetic approach begins with the preparation of Co3O4 nanoparticles via a hydrothermal process, which is followed by a controlled hydrogen reduction treatment to render nanoparticles with radial constituents of Co3O4/CoO/Co (inside/outside). X-ray diffraction patterns confirm the formation of crystalline Co3O4 nanoparticles, and their gradual transformation to cubic CoO and fcc Co on the surface. Images from transmission electron microscope reveal a core@shell microstructure. These Co3O4@CoO@Co nanoparticles show impressive activities and durability for OER. For ORR electrocatalysis, the Co3O4@CoO@Co nanoparticles are subjected to a galvanic displacement reaction in which the surface Co atoms undergo oxidative dissolution for the reduction of Pt ions from the electrolyte to form Co3O4@Pt nanoparticles. With commercial Pt/C as a benchmark, we determine the ORR activities in sequence of Pt/C > Co3O4@Pt > Co3O4. Measurements from a rotation disk electrode at various rotation speeds indicate a 4-electron transfer path for Co3O4@Pt. In addition, the specific activity of Co3O4@Pt is more than two times greater than that of Pt/C.
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Kadhum HJ, Mahapatra DM, Murthy GS. A comparative account of glucose yields and bioethanol production from separate and simultaneous saccharification and fermentation processes at high solids loading with variable PEG concentration. BIORESOURCE TECHNOLOGY 2019; 283:67-75. [PMID: 30901590 DOI: 10.1016/j.biortech.2019.03.060] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 03/09/2019] [Accepted: 03/11/2019] [Indexed: 06/09/2023]
Abstract
A process strategy to aid in optimal enzymatic hydrolysis through the addition of polyethylene glycol (PEG6000) was tested for separate hydrolysis and fermentation (SHF) and simultaneous saccharification and fermentation (SSF). Pretreated wheat straw at 30% solids (w/w) loading was enzymatically hydrolyzed with 0, 0.5, 1, 1.5, 2 and 2.5% of PEG6000 through SHF and SSF. During SHF, bioethanol concentration of 107.5 g/L (2.5% PEG6000) was achieved. SSF ethanol concentration were about 113 g/L at 1.5% PEG6000 addition. A technoeconomic feasibility showed a return on investment (ROI) of 8.13% using 0.5% PEG6000 for SHF (96 h) and 12.25% ROI for SSF control (72 h). Life cycle assessment for the various scenarios indicated higher environmental gains for best cases of SSF over SHF. The study shows the SSF approach (0% PEG6000; 72 h) facilitates higher process efficiencies; technoeconomic gains and high environmental sustainability for future scale-up and commercial realization.
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Affiliation(s)
- Haider Jawad Kadhum
- Department of Biological and Ecological Engineering, Oregon State University, Corvallis, OR 97331, United States; College of Agriculture, Al-Qasim Green University, Babylon, Iraq.
| | - Durga Madhab Mahapatra
- Department of Biological and Ecological Engineering, Oregon State University, Corvallis, OR 97331, United States.
| | - Ganti S Murthy
- Department of Biological and Ecological Engineering, Oregon State University, Corvallis, OR 97331, United States.
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Facile synthesis of Co3O4/Co@N-doped carbon nanotubes as anode with improved cycling stability for Li-ion batteries. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.09.189] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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7
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Wan H, Liu Y, Zhang H, Zhang W, Jiang N, Wang Z, Luo S, Arandiyan H, Liu H, Sun H. Improved lithium storage properties of Co3O4 nanoparticles via laser irradiation treatment. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.05.156] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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8
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Self-supporting Co 3O 4/Graphene Hybrid Films as Binder-free Anode Materials for Lithium Ion Batteries. Sci Rep 2018; 8:3182. [PMID: 29453375 PMCID: PMC5816628 DOI: 10.1038/s41598-018-21436-4] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Accepted: 02/05/2018] [Indexed: 12/05/2022] Open
Abstract
A self-supporting Co3O4/graphene hybrid film has been constructed via vacuum filtration of Co(OH)2 nanosheet and graphene, followed by a two-step thermal treatment. Within the hybrid film, Co3O4 nanoparticles with size of 40~60 nm uniformly in-situ grew on the surface of graphene, forming a novel porous and interleaved structure with strong interactions between Co3O4 nanoparticles and graphene. Such fascinating microstructures can greatly facilitate interfacial electron transportation and accommodate the volume changes upon Li ions insertion and extraction. Consequently, the binder-less hybrid film demonstrated extremely high reversible capacity (1287.7 mAh g−1 at 0.2 A g−1), excellent cycling stability and rate capability (1110 and 800 mAh g−1 at 0.5 and 1.0 A g−1, respectively).
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9
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Preparation of Co3O4/Carbon Derived from Ionic Liquid and Its Application in Lithium-ion Batteries. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.10.077] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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10
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Chen J, Wu X, Gong Y, Wang P, Li W, Mo S, Peng S, Tan Q, Chen Y. General Synthesis of Transition-Metal Oxide Hollow Nanospheres/Nitrogen-Doped Graphene Hybrids by Metal-Ammine Complex Chemistry for High-Performance Lithium-Ion Batteries. Chemistry 2017; 24:2126-2136. [PMID: 28857303 DOI: 10.1002/chem.201703428] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Indexed: 01/28/2023]
Affiliation(s)
- Jiayuan Chen
- State Key Laboratory of Multi-phase Complex Systems; Institute of Process Engineering; Beijing 100190 P.R. China
- School of Chemistry and Chemical Engineering; University of Chinese Academy of Sciences; Beijing 100049 P.R. China
| | - Xiaofeng Wu
- State Key Laboratory of Multi-phase Complex Systems; Institute of Process Engineering; Beijing 100190 P.R. China
- Center for Excellence in Urban Atmospheric Environment, Institute of Urban Environment; Chinese Academy of Sciences; Xiamen 361021 P.R. China
| | - Yan Gong
- State Key Laboratory of Multi-phase Complex Systems; Institute of Process Engineering; Beijing 100190 P.R. China
- School of Chemistry and Chemical Engineering; University of Chinese Academy of Sciences; Beijing 100049 P.R. China
| | - Pengfei Wang
- State Key Laboratory of Multi-phase Complex Systems; Institute of Process Engineering; Beijing 100190 P.R. China
- School of Chemistry and Chemical Engineering; University of Chinese Academy of Sciences; Beijing 100049 P.R. China
| | - Wenhui Li
- State Key Laboratory of Multi-phase Complex Systems; Institute of Process Engineering; Beijing 100190 P.R. China
- School of Chemistry and Chemical Engineering; University of Chinese Academy of Sciences; Beijing 100049 P.R. China
| | - Shengpeng Mo
- State Key Laboratory of Multi-phase Complex Systems; Institute of Process Engineering; Beijing 100190 P.R. China
- School of Chemistry and Chemical Engineering; University of Chinese Academy of Sciences; Beijing 100049 P.R. China
| | - Shengpan Peng
- State Key Laboratory of Multi-phase Complex Systems; Institute of Process Engineering; Beijing 100190 P.R. China
- School of Chemistry and Chemical Engineering; University of Chinese Academy of Sciences; Beijing 100049 P.R. China
| | - Qiangqiang Tan
- State Key Laboratory of Multi-phase Complex Systems; Institute of Process Engineering; Beijing 100190 P.R. China
| | - Yunfa Chen
- State Key Laboratory of Multi-phase Complex Systems; Institute of Process Engineering; Beijing 100190 P.R. China
- Center for Excellence in Urban Atmospheric Environment, Institute of Urban Environment; Chinese Academy of Sciences; Xiamen 361021 P.R. China
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11
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Yang Y, Huang J, Zeng J, Xiong J, Zhao J. Direct Electrophoretic Deposition of Binder-Free Co 3O 4/Graphene Sandwich-Like Hybrid Electrode as Remarkable Lithium Ion Battery Anode. ACS APPLIED MATERIALS & INTERFACES 2017; 9:32801-32811. [PMID: 28880068 DOI: 10.1021/acsami.7b10683] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Co3O4 is emerging as a promising anode candidate for lithium ion batteries (LIBs) with high theoretical capacity (890 mAh g-1) but suffers from poor electrochemical cycling stability resulting from the inferior intrinsic electronic conductivity and large volume changes during electrochemical cycling. Here, a new electrophoretic deposition Co3O4/graphene (EPD Co3O4/G) hybrid electrode is developed to improve the electrochemical performance. Through EPD, Co3O4 nanocubes can be homogeneously embedded between graphene sheets to form a sandwich-like structure. Owing to the excellent flexibility of graphene and a large number of voids in this sandwich-like structure, the structural integrity and unobstructed conductive network can be maintained during cycling. Moreover, the electrode kinetics has proved to be a fast surface-controlled lithium storage process. As a result, the Co3O4/G hybrid electrode exhibits high specific capacity and excellent electrochemical cycling performance. The Co3O4/G hybrid electrode was also further studied by in situ electrochemical XRD to understand the relationship of its structure and performance: (1) The observed LixCo3O4 indicates an intermediate of possible small volume change in the first discharging. (2) The theoretical capacity achievement of the Co3O4 in hybrid electrode was evidenced. (3) The correlation between the electrochemical performance and the structural evolution of the Co3O4/G hybrid electrode was discussed detailedly.
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Affiliation(s)
- Yang Yang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Collaborative Innovation Center of Chemistry for Energy Materials, Xiamen University , Xiamen 361005, China
| | - Jingxin Huang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Collaborative Innovation Center of Chemistry for Energy Materials, Xiamen University , Xiamen 361005, China
| | - Jing Zeng
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Collaborative Innovation Center of Chemistry for Energy Materials, Xiamen University , Xiamen 361005, China
| | - Jian Xiong
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Collaborative Innovation Center of Chemistry for Energy Materials, Xiamen University , Xiamen 361005, China
| | - Jinbao Zhao
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Collaborative Innovation Center of Chemistry for Energy Materials, Xiamen University , Xiamen 361005, China
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Pervaiz E, Syam Azhar Virk M, Bingxue Z, Yin C, Yang M. Nitrogen doped RGO-Co 3O 4 nanograin cookies: highly porous and robust catalyst for removing nitrophenol from waste water. NANOTECHNOLOGY 2017; 28:385703. [PMID: 28749374 DOI: 10.1088/1361-6528/aa8297] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The fabrication of nanograins with a uniform morphology wrapped with reduced graphene oxide (RGO) in a designed manner is critical for obtaining a large surface, high porosity and efficient catalytic ability at mild conditions. Hybrid structures of metal oxides decorated on two-dimensional (2D) RGO lacked an interface and channels between the individual grains and RGO. The present work focuses on the synthesis of RGO-wrapped Co3O4 nanograin architecture in micron-sized polyhedrons and the ability to reduce aromatic nitro compounds. Doping N in the designed microstructure polyhedrons resulted in very large surface area (1085.6 m2 g-1) and pore density (0.47 m3 g-1) microcages. Binding energies from x-ray photoelectron spectroscopy (XPS) and Raman intensities confirmed the presence of doped N and RGO-wrapped around Co3O4 nanograins. However, the morphology and microstructure was supported by FESEM and HRTEM images revealing the fabrication of high integrity RGO-Co3O4 microstructure hybrids composed of a 10 nm grain size with narrower grain size distribution. Ammonia treatment produced interconnected channels and dumbbell pores that facilitated ion exchange between the catalyst surface and the liquid medium at the grain boundary interfaces, and offered less mass transport resistance providing fast adsorption of reactants and desorption of the product causing surface renewal. Prepared N-RGO-Co3O4 shows the largest percentage reduction (96%) of p-nitrophenol (p-NP) at room temperature as compared to pure Co3O4 and RGO-Co3O4 nanograin microstructures over 10 min. Fabricated architectures can be applied effectively for fast and facile treatment of industrial waste streams with complex organic molecules.
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Affiliation(s)
- Erum Pervaiz
- Solid State Functional Materials Research Lab, Ningbo Institute of Materials Technology and Engineering (NIMTE), Chinese Academy of Sciences, Ningbo 315201, People's Republic of China. Department of Chemical Engineering, School of Chemical & Materials Engineering (SCME), National University of Sciences & Technology (NUST), H-12 Islamabad, 44000 Pakistan
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13
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Electrochemical supercapacitive performance of spray deposited Co3O4 thin film nanostructures. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.02.157] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Xu D, Mu C, Xiang J, Wen F, Su C, Hao C, Hu W, Tang Y, Liu Z. Carbon-Encapsulated Co 3 O 4 @CoO@Co Nanocomposites for Multifunctional Applications in Enhanced Long-life Lithium Storage, Supercapacitor and Oxygen Evolution Reaction. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.10.116] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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15
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Wang M, Song X, Dai S, Xu W, Yang Q, Liu J, Hu C, Wei D. NiO nanoparticles supported on graphene 3D network current collector for high-performance electrochemical energy storage. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.08.036] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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