High entropy alloys;
CoCrFeNiMo;
Oxygen evolution reaction;
Water splitting;
Microwave sintering;
Hydrothermal treatment;
WATER OXIDATION;
ELECTROCATALYST;
NANOPARTICLES;
COOOH;
ARRAY;
PURE;
D O I:
10.1016/j.jallcom.2021.160995
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
The development of cheap, efficient and high activity non-noble-metal oxygen evolution reaction (OER) electrocatalysts is of great interest in promoting the application of water splitting. Herein, the flower-like phosphates were grown in situ on a porous microwave sintered CoCrFeNiMo high entropy alloy (HEA) by the hydrothermal-phosphorization method. The metal phosphates can promote the formation of hydroxides with high catalytic activity on the surface of the catalyst. The obtained porous HEA phosphates exhibit a low overpotential of 220 mV at 10 mA cm(-2), a small Tafel slope of 30.3 mV dec(-1) and superior stability in 1.0 M KOH. Especially, after continuous cyclic voltammetry (CV) 5000 cycles, the catalyst only requires the overpotential of 210 mV at 10 mA cm(-2). The enhanced OER performance of this porous HEA is be attributed to 3D internal connected nanoporous structure, high conductivity, abundant metal (oxy)hydroxide nanosheets and the presence of phosphonates, that provides a sufficiently large surface exposure and allows the acceleration of the electron transfer rate between various species. (C) 2021 Elsevier B.V. All rights reserved.
机构:
Department of Materials Engineering, Isfahan University of Technology, Isfahan,84156-83111, IranDepartment of Materials Engineering, Isfahan University of Technology, Isfahan,84156-83111, Iran
Khorsand, S.
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Raeissi, K.
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Ashrafizadeh, F.
Arenas, M.A.
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机构:
Department of Surface Engineering, Corrosion and Durability, National Center for Metallurgical Research (CENIM-CSIC), Avda. Gregorio del Amo, 8, Madrid,28040, SpainDepartment of Materials Engineering, Isfahan University of Technology, Isfahan,84156-83111, Iran
机构:
Shanghai Inst Technol, Sch Mat Sci & Engn, Shanghai 201418, Peoples R ChinaShanghai Inst Technol, Sch Mat Sci & Engn, Shanghai 201418, Peoples R China
Wang, Tianyu
Liu, Ke
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Hubei Univ Arts & Sci, Hubei Key Lab Low Dimens Optoelect Mat & Devices, Xiangyang 441053, Peoples R ChinaShanghai Inst Technol, Sch Mat Sci & Engn, Shanghai 201418, Peoples R China
Liu, Ke
Gao, Zhifeng
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Shanghai Inst Technol, Sch Mat Sci & Engn, Shanghai 201418, Peoples R ChinaShanghai Inst Technol, Sch Mat Sci & Engn, Shanghai 201418, Peoples R China
Gao, Zhifeng
Zeng, Zifeng
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Shanghai Inst Technol, Sch Mat Sci & Engn, Shanghai 201418, Peoples R ChinaShanghai Inst Technol, Sch Mat Sci & Engn, Shanghai 201418, Peoples R China
Zeng, Zifeng
Mao, Runxuan
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Shanghai Inst Technol, Sch Mat Sci & Engn, Shanghai 201418, Peoples R ChinaShanghai Inst Technol, Sch Mat Sci & Engn, Shanghai 201418, Peoples R China
Mao, Runxuan
Zhu, Gejun
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Shanghai Inst Technol, Sch Mat Sci & Engn, Shanghai 201418, Peoples R ChinaShanghai Inst Technol, Sch Mat Sci & Engn, Shanghai 201418, Peoples R China
Zhu, Gejun
Ni, Jiayan
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Shanghai Inst Technol, Sch Mat Sci & Engn, Shanghai 201418, Peoples R ChinaShanghai Inst Technol, Sch Mat Sci & Engn, Shanghai 201418, Peoples R China
Ni, Jiayan
Xu, Xiaowei
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h-index: 0
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Shanghai Inst Technol, Sch Mat Sci & Engn, Shanghai 201418, Peoples R China
Hubei Univ Arts & Sci, Hubei Key Lab Low Dimens Optoelect Mat & Devices, Xiangyang 441053, Peoples R ChinaShanghai Inst Technol, Sch Mat Sci & Engn, Shanghai 201418, Peoples R China
Xu, Xiaowei
Jia, Runping
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Shanghai Inst Technol, Sch Mat Sci & Engn, Shanghai 201418, Peoples R ChinaShanghai Inst Technol, Sch Mat Sci & Engn, Shanghai 201418, Peoples R China
Jia, Runping
Han, Sheng
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Shanghai Inst Technol, Sch Chem & Environm Engn, Shanghai 201418, Peoples R ChinaShanghai Inst Technol, Sch Mat Sci & Engn, Shanghai 201418, Peoples R China
机构:
Inha Univ, Dept Chem & Chem Engn, Educ & Res Ctr Smart Energy Mat & Proc, Incheon 22212, South KoreaInha Univ, Dept Chem & Chem Engn, Educ & Res Ctr Smart Energy Mat & Proc, Incheon 22212, South Korea
Lim, Dongwook
Lim, Chaewon
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Inha Univ, Dept Chem & Chem Engn, Educ & Res Ctr Smart Energy Mat & Proc, Incheon 22212, South KoreaInha Univ, Dept Chem & Chem Engn, Educ & Res Ctr Smart Energy Mat & Proc, Incheon 22212, South Korea
Lim, Chaewon
Hwang, Minji
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Inha Univ, Dept Chem & Chem Engn, Educ & Res Ctr Smart Energy Mat & Proc, Incheon 22212, South KoreaInha Univ, Dept Chem & Chem Engn, Educ & Res Ctr Smart Energy Mat & Proc, Incheon 22212, South Korea
Hwang, Minji
Kim, Minsoo
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Inha Univ, Dept Chem & Chem Engn, Educ & Res Ctr Smart Energy Mat & Proc, Incheon 22212, South KoreaInha Univ, Dept Chem & Chem Engn, Educ & Res Ctr Smart Energy Mat & Proc, Incheon 22212, South Korea
Kim, Minsoo
Shim, Sang Eun
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Inha Univ, Dept Chem & Chem Engn, Educ & Res Ctr Smart Energy Mat & Proc, Incheon 22212, South KoreaInha Univ, Dept Chem & Chem Engn, Educ & Res Ctr Smart Energy Mat & Proc, Incheon 22212, South Korea
Shim, Sang Eun
Baeck, Sung-Hyeon
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Inha Univ, Dept Chem & Chem Engn, Educ & Res Ctr Smart Energy Mat & Proc, Incheon 22212, South KoreaInha Univ, Dept Chem & Chem Engn, Educ & Res Ctr Smart Energy Mat & Proc, Incheon 22212, South Korea
机构:
Cent South Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R ChinaCent South Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R China
Shi, Hai-yan
Wang, Yi
论文数: 0引用数: 0
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机构:
Hunan Univ Sci & Technol, Sch Mat Sci & Engn, Xiangtan 411201, Peoples R ChinaCent South Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R China
Wang, Yi
Wang, De-zhi
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Cent South Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R ChinaCent South Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R China