Cr-doped CoFe layered double hydroxide nanosheets as high-efficiency electrocatalyst for oxygen evolution reaction

被引:4
|
作者
Qiao, Lingxia [1 ]
Li, Tong [1 ]
Wei, Quanzhong [4 ]
Fu, Zaiguo [1 ]
Cheng, Zhihai [1 ,6 ]
Wu, Jiang [1 ,5 ,6 ]
Lin, Jia [2 ]
Chen, Jing [2 ]
Chen, Zihao [1 ]
Qi, Yongfeng [3 ]
机构
[1] Shanghai Univ Elect Power, Coll Energy & Mech Engn, Shanghai 200090, Peoples R China
[2] Beijing Univ Chem Technol, Coll Mat Sci & Engn, Beijing 100029, Peoples R China
[3] Shanghai Univ Elect Power, Coll Math & Phys, Shanghai 200090, Peoples R China
[4] Yangzhou Univ, Coll Elect Energy & Power Engn, Yangzhou 225127, Peoples R China
[5] Shanghai Noncarbon Energy Convers & Utilizat Inst, Shanghai 200240, Peoples R China
[6] 2103 Pingliang Rd, Shanghai 200090, Peoples R China
基金
中国国家自然科学基金; 上海市自然科学基金;
关键词
Layered double hydroxides; Oxygen evolution reaction; Electrocatalytic activity; OXIDE; COBALT; SUPERCAPACITOR; CATALYSTS; SUPERIOR; ARRAY; OXIDATION; PHOSPHIDE; ELECTRODE; IRON;
D O I
10.1016/j.jpcs.2022.111015
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Developing high-performance, stable and low-cost catalysts are vital for oxygen evolution reaction. Transition metal cobalt-iron layered double hydroxides are promising catalyst candidates for the OER process. In our work, nonprecious chromium dopant is introduced into the CoFe layered double hydroxide (LDH) via a facile one-step hydrothermal method. Compared to other catalysts including CoFeZn, CoFe LDH and CoFeCd, CoFeCr LDH exhibits excellent electrocatalytic activity with an ultralow overpotential of 278 mV at the current density of 10 mA cm-2 and high ability after cyclic voltammetry for 3000 cycles. The dopant of Cr3+ could adjust the elec-tronic structure and the partially oxidized Cr6+ could stabilize the high valence active sites. Therefore, the CoFeCr LDHs catalyst shows superior OER performance.
引用
收藏
页数:8
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