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Liu Y, Li Y, Wu Q, Su Z, Wang B, Chen Y, Wang S. Hollow CoP/FeP 4 Heterostructural Nanorods Interwoven by CNT as a Highly Efficient Electrocatalyst for Oxygen Evolution Reactions. NANOMATERIALS 2021; 11:nano11061450. [PMID: 34070770 PMCID: PMC8227064 DOI: 10.3390/nano11061450] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 05/27/2021] [Accepted: 05/27/2021] [Indexed: 11/24/2022]
Abstract
Electrolysis of water to produce hydrogen is crucial for developing sustainable clean energy and protecting the environment. However, because of the multi-electron transfer in the oxygen evolution reaction (OER) process, the kinetics of the reaction is seriously hindered. To address this issue, we designed and synthesized hollow CoP/FeP4 heterostructural nanorods interwoven by carbon nanotubes (CoP/FeP4@CNT) via a hydrothermal reaction and a phosphorization process. The CoP/FeP4@CNT hybrid catalyst delivers prominent OER electrochemical performances: it displays a substantially smaller Tafel slope of 48.0 mV dec−1 and a lower overpotential of 301 mV at 10 mA cm−2, compared with an RuO2 commercial catalyst; it also shows good stability over 20 h. The outstanding OER property is mainly attributed to the synergistic coupling between its unique CNT-interwoven hollow nanorod structure and the CoP/FeP4 heterojunction, which can not only guarantee high conductivity and rich active sites, but also greatly facilitate the electron transfer, ion diffusion, and O2 gas release and significantly enhance its electrocatalytic activity. This work offers a facile method to develop transition metal-based phosphide heterostructure electrocatalysts with a unique hierarchical nanostructure for high performance water oxidation.
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Affiliation(s)
- Yanfang Liu
- College of Science, Institute of Oxygen Supply, Tibet University, Lhasa 850000, China; (Y.L.); (Y.L.); (Q.W.)
- School of Electronic Science and Engineering, and State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China;
| | - Yong Li
- College of Science, Institute of Oxygen Supply, Tibet University, Lhasa 850000, China; (Y.L.); (Y.L.); (Q.W.)
| | - Qi Wu
- College of Science, Institute of Oxygen Supply, Tibet University, Lhasa 850000, China; (Y.L.); (Y.L.); (Q.W.)
| | - Zhe Su
- School of Electronic Science and Engineering, and State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China;
| | - Bin Wang
- School of Electronic Science and Engineering, and State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China;
- Correspondence: (B.W.); (Y.C.); (S.W.)
| | - Yuanfu Chen
- College of Science, Institute of Oxygen Supply, Tibet University, Lhasa 850000, China; (Y.L.); (Y.L.); (Q.W.)
- School of Electronic Science and Engineering, and State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China;
- Correspondence: (B.W.); (Y.C.); (S.W.)
| | - Shifeng Wang
- College of Science, Institute of Oxygen Supply, Tibet University, Lhasa 850000, China; (Y.L.); (Y.L.); (Q.W.)
- Key Laboratory of Cosmic Rays, Tibet University, Ministry of Education, Lhasa 850000, China
- Correspondence: (B.W.); (Y.C.); (S.W.)
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Yan CC, Tang SF. Defective two-dimensional layered heterometallic phosphonates as highly efficient oxygen evolution electrocatalysts. Inorg Chem Front 2021. [DOI: 10.1039/d1qi00663k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Two-dimensional metal phosphonates can be used as OER catalysts directly and their catalytic performances can be improved greatly by combining heterometal doping and defect engineering methods.
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Affiliation(s)
- Chong-Chong Yan
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Changcheng Road 700, Chengyang District, Qingdao 266109, China
| | - Si-Fu Tang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Changcheng Road 700, Chengyang District, Qingdao 266109, China
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