Fe-doped CoO@C nanoparticles derived from layered double hydroxide used as efficient electrocatalyst for oxygen evolution reaction

被引:2
作者
Caiyun He [1 ]
Xuzhao Han [1 ]
Xianggui Kong [1 ]
Meihong Jiang [1 ]
Deqiang Lei [2 ]
Xiaodong Lei [1 ]
机构
[1] State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology
[2] Department of Neurosurgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology
关键词
Layered double hydroxide; Doping; nanoparticles; Oxygen evolution reaction;
D O I
暂无
中图分类号
TB383.1 []; O643.36 [催化剂];
学科分类号
070205 ; 080501 ; 1406 ; 081705 ;
摘要
Compared with noble metal catalyst, Co3O4-based electrocatalysts have attracted considerable interesting as low-cost alternatives for oxygen evolution reaction(OER). However, the poor electrocatalytic activity still remains a huge challenge. Herein, we demonstrate a feasible approach through oxidation of CoFe layered double hydroxide(CoFe-LDH) to synthesize Fe-doped Co3O4@C nanoparticles with size of about30–50 nm. As OER catalyst, the as-synthesized Fe-doped Co3O4@C nanoparticles exhibited superior OER performance with a small overpotential of 260 mV at the current density of 20 mA cm-2, a small Tafel slope of 70 mV dec-1 and long-term durability(there was no obviously OER current density degradation for 100 h) in alkaline solution. The present work opens a new avenue to the exploration of cost-effective and excellent electrocatalysts based on transition metal oxide materials to substitute precious metal materials for water splitting.
引用
收藏
页码:63 / 70
页数:8
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