The CoMo-LDH ultrathin nanosheet as a highly active and bifunctional electrocatalyst for overall water splitting

被引:101
作者
Bao, Jian [1 ]
Wang, Zhaolong [1 ]
Xie, Junfeng [2 ]
Xu, Li [1 ]
Lei, Fengcai [2 ]
Guan, Meili [1 ]
Huang, Yunpeng [1 ]
Zhao, Yan [1 ]
Xia, Jiexiang [1 ]
Li, Huaming [1 ]
机构
[1] Jiangsu Univ, Sch Chem & Chem Engn, Inst Energy Res, Zhenjiang 212013, Jiangsu, Peoples R China
[2] Shandong Normal Univ, Inst Mol & Nano Sci, Collaborat Innovat Ctr Functionalized Probes Chem, Key Lab Mol & Nano Probes,Minist Educ,Coll Chem C, Jinan 250014, Shandong, Peoples R China
基金
中国国家自然科学基金;
关键词
LAYERED DOUBLE HYDROXIDE; OXYGEN; EFFICIENT; COBALT; CATALYSTS; RICH;
D O I
10.1039/c8qi00867a
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The development of inexpensive and bifunctional electrocatalysts based on earth-abundant elements for electrocatalytic water splitting, including the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), is of great significance. Herein, a new type of CoMo-LDH ultrathin nanosheet was synthesized as a bifunctional electrocatalyst with both OER and HER activity for full water splitting. Benefiting from the ultrathin structure and the tuned electronic structure by the doping of Mo6+, the catalyst exhibits superior OER performance with an overpotential of 290 mV to deliver a current density of 10 mA cm(-2). When acting as a HER catalyst, the catalyst shows a low overpotential of 115 mV achieving a current density of 10 mA cm(-2). Furthermore, the catalyst also shows bifunctional catalytic activity with a voltage of 1.63 V at 10 mA cm(-2) and exhibits excellent stability for 30 h when used in the full water splitting cell. Thus, the novel CoMo-LDH ultrathin nanosheet provides a guideline for the future design of highly active and bifunctional materials for water splitting.
引用
收藏
页码:2964 / 2970
页数:7
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