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Electrocatalytic hydrogen and oxygen evolution reactions: Role of two-dimensional layered materials and their composites. Electrochim Acta 2023. [DOI: 10.1016/j.electacta.2023.142119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
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Zhao S, Zhao Y, Chen J, Dai R, Zhou W, Yang J, Zhao X, Chen Z, Zhou Y, Zhang H, Chen A. Crystalline and amorphous phases: NiFeCo tri-metal phosphide as an efficient electrocatalyst to accelerate oxygen evolution reaction kinetics. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Wang C, Li W, Kistanov AA, Singh H, Kayser Y, Cao W, Geng B. Structural engineering and electronic state tuning optimization of molybdenum-doped cobalt hydroxide nanosheet self-assembled hierarchical microtubules for efficient electrocatalytic oxygen evolution. J Colloid Interface Sci 2022; 628:398-406. [PMID: 35998464 DOI: 10.1016/j.jcis.2022.08.069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Revised: 08/10/2022] [Accepted: 08/11/2022] [Indexed: 11/26/2022]
Abstract
Cobalt-based hydroxide are ideal candidates for the oxygen evolution reaction. Herein, we use molybdenum oxide nanorods as sacrificial templates to construct a self-supporting molybdenum-doped cobalt hydroxide nanosheet hierarchical microtubule structure based on a structural engineering strategy to improve the active area of the catalyst. X-ray-based spectroscopic tests revealed that Mo (VI) with tetrahedral coordination intercalated into the interlayer of cobalt hydroxide, promoting interlayer separation. At the same time, Mo is connected with Co through oxygen bonds, which promotes the transfer of Co charges to Mo and reduces the electron cloud density of Co ions. In 1 M KOH, optimized molybdenum-doped cobalt hydroxide nanosheet microtubules only needs an overpotential of 288 mV to drive a current density of 10 mA cm-2, which is significantly better than that of pure Co(OH)2 nanosheets and RuO2. Structural engineering and electronic state regulation can effectively improve the oxygen evolution activity of cobalt-based hydroxide, which provides a design idea for the development of efficient oxygen evolution catalysts.
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Affiliation(s)
- Chao Wang
- College of Chemistry and Materials Science, The Key Laboratory of Functional Molecular Solids, Ministry of Education, The Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education Institutes, Anhui Provincial Engineering Laboratory for New-Energy Vehicle Battery Energy-Storage Materials, Anhui Normal University, Wuhu 241002, China
| | - Wen Li
- College of Chemistry and Materials Science, The Key Laboratory of Functional Molecular Solids, Ministry of Education, The Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education Institutes, Anhui Provincial Engineering Laboratory for New-Energy Vehicle Battery Energy-Storage Materials, Anhui Normal University, Wuhu 241002, China
| | - Andrey A Kistanov
- Nano and Molecular Systems Research Unit, University of Oulu, FIN-90014, Finland
| | - Harishchandra Singh
- Nano and Molecular Systems Research Unit, University of Oulu, FIN-90014, Finland
| | - Yves Kayser
- Physikalisch-Technische Bundesanstalt, X-ray Spectrometry Abbestr. 2-12, 10587 Berlin, Germany
| | - Wei Cao
- Nano and Molecular Systems Research Unit, University of Oulu, FIN-90014, Finland
| | - Baoyou Geng
- College of Chemistry and Materials Science, The Key Laboratory of Functional Molecular Solids, Ministry of Education, The Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education Institutes, Anhui Provincial Engineering Laboratory for New-Energy Vehicle Battery Energy-Storage Materials, Anhui Normal University, Wuhu 241002, China; Institute of Energy, Hefei Comprehensive National Science Center, Hefei 230031, China.
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Zhang J, Sun N, Yin B, Su Y, Ji S, Huan Y, Wei T. Regulating Ni 3+ contents by a cobalt doping strategy in ternary Ni xCo 3−xAl 1-LDH nanoflowers for high-performance charge storage. Dalton Trans 2022; 51:16957-16963. [DOI: 10.1039/d2dt02893j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Ni1Co2Al1-LDH electrode prepared by hydrothermal method delivers a high specific capacitance (728 C g−1 at 1 A g−1) and excellent capacitance retention (93.18% of initial capacitance at 30 A g−1 after 10 000 cycles).
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Affiliation(s)
- Jiaqi Zhang
- School of Material Science and Engineering, University of Jinan, Jinan, 250022, PR China
| | - Ningqiang Sun
- School of Material Science and Engineering, University of Jinan, Jinan, 250022, PR China
| | - Baoyi Yin
- School of Microelectronics, Dalian University of Technology, Dalian, 116024, China
| | - Yuanhui Su
- School of Material Science and Engineering, University of Jinan, Jinan, 250022, PR China
| | - Shuaijing Ji
- School of Material Science and Engineering, University of Jinan, Jinan, 250022, PR China
| | - Yu Huan
- School of Material Science and Engineering, University of Jinan, Jinan, 250022, PR China
| | - Tao Wei
- School of Material Science and Engineering, University of Jinan, Jinan, 250022, PR China
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