In Situ Electrochemically Activated CoMn-S@NiO/CC Nanosheets Array for Enhanced Hydrogen Evolution

被引：108

作者：

Li, Qun ^{[1
,2
]}

Xing, Zhicai ^{[1
]}

Wang, Dewen ^{[1
,2
]}

Sun, Xuping ^{[1
]}

Yang, Xiurong ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130022, Jilin, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

ACS CATALYSIS | 2016年 / 6卷 / 05期

基金：

中国国家自然科学基金;

关键词：

hydrogen evolution reaction; CoMn-S; NiO; nanosheets array; in situ electrochemical reduction; MOLYBDENUM SULFIDE; EFFICIENT ELECTROCATALYST; MOS2; NANOPARTICLES; CATALYTIC-ACTIVITY; OXYGEN REDUCTION; METAL; MANGANESE; HYDROXIDE; GRAPHENE; OXIDE;

D O I：

10.1021/acscatal.6b00014

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 cost-effective hydrogen evolution reaction (HER) electrocatalysts based on 3d-transition metal is highly desired but still challenging. Herein, we report on the synthesis of the three-dimensional self supported nickel-oxide-coated cobalt manganese sulfide nanosheets array on carbon cloth (CoMn-S@NiO/CC), which is used as an efficient electrocatalyst for HER in alkaline media. The performance of CoMn-S@NiO/CC is significantly improved through an in situ electrochemical reduction process. The electrochemically activated CoMn-S@NiO/CC (ECA CoMn-S@NiO/CC) drives 100 and 200 mA cm(-2) at overpotentials of 232 and 278 mV, respectively, with long-term stability for hydrogen production in 1.0 M KOH. Such high hydrogen evolution activity for ECA CoMn-S@NiO/CC is owed to the incorporation of Co ions, increase in electrochemically active surface area, and the newly formation of amorphous regions on its surface.

引用

页码：2797 / 2801

页数：5

共 56 条

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