Ni2+/Co2+ doped Au-Fe7S8 nanoplatelets with exceptionally high oxygen evolution reaction activity

被引：61

作者：

Javaid, Shaghraf ^{[1
]}

Xu, Xiaomin ^{[2
]}

Chen, Wei ^{[1
]}

Chen, Jiayi ^{[1
]}

Hsu, Hsien-Yi ^{[3
,4
,5
]}

Wang, Sheng ^{[6
]}

Yang, Xuyong ^{[6
]}

Li, Yunguo ^{[7
]}

Shao, Zongping ^{[2
]}

Jones, Franca ^{[1
]}

Jia, Guohua ^{[1
]}

机构：

[1] Curtin Univ, Sch Mol & Life Sci, Perth, WA 6102, Australia

[2] Curtin Univ, WA Sch Mines Minerals Energy & Chem Engn WASM MEC, Perth, WA 6102, Australia

[3] City Univ Hong Kong, Sch Energy & Environm, Kowloon Tong, Hong Kong, Peoples R China

[4] City Univ Hong Kong, Dept Mat Sci & Engn, Kowloon Tong, Hong Kong, Peoples R China

[5] City Univ Hong Kong, Shenzhen Res Inst, Shenzhen 518057, Peoples R China

[6] Shanghai Univ, Key Lab Adv Display & Syst Applicat, Minist Educ, 149 Yanchang Rd, Shanghai 200072, Peoples R China

[7] Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Crust Mantle Mat & Environm, Hefei 230026, Peoples R China

来源：

NANO ENERGY | 2021年 / 89卷

基金：

澳大利亚研究理事会; 中国国家自然科学基金;

关键词：

Oxygen evolution reaction; Doping; Nanoplatelets; Au-Fe7S8; REDUCED GRAPHENE OXIDE; EFFICIENT ELECTROCATALYST; SULFIDE NANOPARTICLES; PYRRHOTITE FE7S8; WATER OXIDATION; NICKEL; NANOSHEETS; ENERGY; NANOARRAYS; NI;

D O I：

10.1016/j.nanoen.2021.106463

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：

To overcome the limited potency of energy devices such as alkaline water electrolyzers, the construction of active materials with dramatically enhanced oxygen evolution reaction (OER) performance is of great importance. Herein we developed an ion diffusion-induced doping strategy that is capable of producing Ni2+/Co2+ doped two-dimensional (2D) Au-Fe7S8 nanoplatelets (NPLs) with exceptionally high OER activity outperforming the benchmark RuO2 catalyst. The co-existence of Co and Ni in Au-Fe7S8 NPLs led to the lowest OER overpotential of 243 mV at 10 mA cm(-2) and fast kinetics with a Tafel slope of 43 mV dec(-1). Density functional theory (DFT) calculations demonstrated that Ni2+/Co2+ doping improves the binding of OOH species on the {001} surfaces of Au-Fe7S8 NPLs and lowers the Gibbs free energy of the OER process, which are beneficial to outstanding OER activity of the nanoplatelets.

引用

页数：12

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