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Xie L, Liu Q, He X, Luo Y, Zheng D, Sun S, Farouk A, Hamdy MS, Liu J, Kong Q, Sun X. A brush-like Cu 2O-CoO core-shell nanoarray: an efficient bifunctional electrocatalyst for overall seawater splitting. Chem Commun (Camb) 2023; 59:10303-10306. [PMID: 37548248 DOI: 10.1039/d3cc02359a] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/08/2023]
Abstract
Herein, a brush-like Cu2O-CoO core-shell nanoarray on copper foam (Cu2O-CoO/CF) can achieve efficient oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) performance in alkaline seawater electrolyte. This Cu2O-CoO/CF shows overpotentials as low as 315 and 295 mV at 100 mA cm-2 for the OER and HER, respectively. Moreover, it could also be operated at 1.82 V with 100 mA cm-2 in a two-electrode electrolyzer and exhibits strong stability for at least 50 hours of electrolysis. The excellent performance and hierarchical structure advantages of Cu2O-CoO/CF provide new ideas for designing efficient seawater splitting electrocatalysts.
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Affiliation(s)
- Lisi Xie
- Institute for Advanced Study, Chengdu University, Chengdu 610106, Sichuan, China.
| | - Qian Liu
- Institute for Advanced Study, Chengdu University, Chengdu 610106, Sichuan, China.
| | - Xun He
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, Sichuan, China.
| | - Yongsong Luo
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, Sichuan, China.
| | - Dongdong Zheng
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, Sichuan, China.
| | - Shengjun Sun
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, Shandong, China
| | - Asmaa Farouk
- Department of Chemistry, College of Science, King Khalid University, Abha 61413, Saudi Arabia
| | - Mohamed S Hamdy
- Department of Chemistry, College of Science, King Khalid University, Abha 61413, Saudi Arabia
| | - Jun Liu
- Department of Otolaryngology-Head & Neck Surgery, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China.
| | - Qingquan Kong
- Institute for Advanced Study, Chengdu University, Chengdu 610106, Sichuan, China.
| | - Xuping Sun
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, Sichuan, China.
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, Shandong, China
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Xie Y, Feng Y, Jin S, Li C, Li C, Sun Y, Luo F, Yang Z. Nickel-doped iridium echinus-like nanosheets for stable acidic water splitting. Chem Commun (Camb) 2023. [PMID: 37326427 DOI: 10.1039/d3cc02299d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Nickel-doped iridium echinus-like nanosheets (NiIr-ENS) have a superior acidic oxygen evolution reaction (OER) activity with a TOF of 1.72 s-1 at an overpotential of 300 mV, 8.6-fold higher than that of IrO2.
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Affiliation(s)
- Yuhua Xie
- Sustainable Energy Laboratory, Faculty of Materials Science and Chemistry, China University of Geosciences Wuhan, 388 Lumo RD, Wuhan, 430074, P. R. China.
| | - Yumei Feng
- Sustainable Energy Laboratory, Faculty of Materials Science and Chemistry, China University of Geosciences Wuhan, 388 Lumo RD, Wuhan, 430074, P. R. China.
| | - Siyu Jin
- Sustainable Energy Laboratory, Faculty of Materials Science and Chemistry, China University of Geosciences Wuhan, 388 Lumo RD, Wuhan, 430074, P. R. China.
| | - Chen Li
- College of Materials Science and Engineering, State Key Laboratory of New Textile Materials & Advanced Processing Technology, Wuhan Textile University, Wuhan, 430200, P. R. China.
| | - Chunsheng Li
- School of Chemistry and Life Sciences, Suzhou University of Science and Technology, Suzhou City, Jiangsu Province 215009, P. R. China.
- Key Laboratory of Advanced Electrode Materials for Novel Solar Cells for Petroleum and Chemical Industry of China, Suzhou University of Science and Technology, Suzhou City, Jiangsu Province 215009, P. R. China
| | - Yan Sun
- School of Chemistry and Life Sciences, Suzhou University of Science and Technology, Suzhou City, Jiangsu Province 215009, P. R. China.
- Key Laboratory of Advanced Electrode Materials for Novel Solar Cells for Petroleum and Chemical Industry of China, Suzhou University of Science and Technology, Suzhou City, Jiangsu Province 215009, P. R. China
| | - Fang Luo
- College of Materials Science and Engineering, State Key Laboratory of New Textile Materials & Advanced Processing Technology, Wuhan Textile University, Wuhan, 430200, P. R. China.
| | - Zehui Yang
- Sustainable Energy Laboratory, Faculty of Materials Science and Chemistry, China University of Geosciences Wuhan, 388 Lumo RD, Wuhan, 430074, P. R. China.
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Zhang T, Meng YL, Zhao YH, Ni JC, Pan Y, Dai Y, Tan Z, Wang XF, Song XZ. Boosting the oxygen evolution electrocatalysis of high-entropy hydroxides by high-valence nickel species regulation. Chem Commun (Camb) 2022; 58:7682-7685. [PMID: 35730446 DOI: 10.1039/d2cc02367a] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The addition of an extra metal source induces the transformation from crystalline α-Ni(OH)2 to an amorphous NiCoFeCrMo-based high-entropy hydroxide (HEH) and maximizes the high-valence Ni3+ content in HEH. For OER electrocatalysis, the quinary HEH possesses an overpotential of 292 mV at 10 mA cm-2, a Tafel slope of 54.31 mV dec-1 and the boosted intrinsic activity, surpassing other subsystems.
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Affiliation(s)
- Tao Zhang
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Panjin Campus, Panjin, 124221, China.
| | - Yu-Lan Meng
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Panjin Campus, Panjin, 124221, China.
| | - Yu-Hang Zhao
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Panjin Campus, Panjin, 124221, China.
| | - Jing-Chang Ni
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Panjin Campus, Panjin, 124221, China.
| | - Yu Pan
- Institute of Functional Textiles and Advanced Materials, College of Textiles and Clothing, State Key Laboratory of Bio-Fibers and Eco-textiles, Qingdao University, Qingdao, 266071, China.
| | - Yan Dai
- Panjin Institute of Industrial Technology, Liaoning Key Laboratory of Chemical Additive Synthesis and Separation, Dalian University of Technology, Panjin, 124221, Liaoning, China
| | - Zhenquan Tan
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Panjin Campus, Panjin, 124221, China.
| | - Xiao-Feng Wang
- Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Ministry of Education), School of Physics, Dalian University of Technology, Dalian, 116024, China.
| | - Xue-Zhi Song
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Panjin Campus, Panjin, 124221, China.
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Li G, Gao R, Qiu Z, Liu W, Song Y. Highly dispersed ruthenium nanoparticles on nitrogen doped carbon toward efficient hydrogen evolution in both alkaline and acidic electrolytes. RSC Adv 2022; 12:13932-13937. [PMID: 35558850 PMCID: PMC9088967 DOI: 10.1039/d2ra02671f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 05/01/2022] [Indexed: 11/21/2022] Open
Abstract
Efficient and inexpensive electrocatalysts toward the hydrogen evolution reaction (HER) play an important role in electrochemical water splitting. Herein, we report the synthesis of highly dispersed ruthenium nanoparticles (2.2 ± 0.4 nm) on nitrogen doped carbon (Ru/N-C) by chemical reduction of RuCl3 on carbon in the presence of polyvinylpyrrolidone in combination with subsequent pyrolysis. Ru/N-C exhibits an excellent overpotential of 13.5 and 18.5 mV at 10 mA cm−2 in 1.0 M KOH and 0.5 M H2SO4 aqueous solution, respectively, much better than and comparable to those of commercial Pt/C (38.0 and 10.0 mV). The exceptional HER activity arises from high surface area of ultrafine Ru nanoparticles and appropriate Ru electronic state tuned by nitrogen dopant. Furthermore, Ru/N-C demonstrates excellent durability in both alkaline and acidic condition relative to commercial Pt/C. We speculate that the nitrogen dopant might have coordinated with Ru and tightly anchored Ru nanoparticles, preventing them from agglomerating. Ultrafine ruthenium nanoparticles on nitrogen doped carbon show exceptional activity toward the hydrogen evolution reaction in alkaline and acidic electrolytes.![]()
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Affiliation(s)
- Gen Li
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology 2 Linggong Road Dalian 116024 China
| | - Rui Gao
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology 2 Linggong Road Dalian 116024 China
| | - Zhongyu Qiu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology 2 Linggong Road Dalian 116024 China
| | - Wei Liu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology 2 Linggong Road Dalian 116024 China
| | - Yujiang Song
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology 2 Linggong Road Dalian 116024 China
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