Cobalt-molybdenum disulfide supported on nitrogen-doped graphene towards an efficient hydrogen evolution reaction

被引：24

作者：

Hou, Xuewei ^{[1
]}

Li, Yuan ^{[1
]}

Cheng, Lina ^{[1
]}

Feng, Xuelei ^{[1
]}

Zhang, Hongming ^{[1
]}

Han, Shumin ^{[1
,2
]}

机构：

[1] Yanshan Univ, Sch Environm & Chem Engn, Hebei Key Lab Appl Chem, Qinhuangdao 066004, Hebei, Peoples R China

[2] Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Hebei, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2019年 / 44卷 / 23期

基金：

中国国家自然科学基金;

关键词：

Electrocatalysis; Nitrogen-doped graphene; Bimetallic sulfide; Hydrogen evolution reaction; MOS2 QUANTUM DOTS; HYDROTHERMAL SYNTHESIS; ONE-STEP; METAL ELECTROCATALYST; HYBRID CATALYST; CARBON; SULFIDE; PERFORMANCE; NANOFIBERS; NANOSHEETS;

D O I：

10.1016/j.ijhydene.2019.03.159

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：

Herein, the cobalt-molybdenum bimetallic sulfide catalysts supported on nitrogen-doped graphene (CoMoS2/NGO) were facilely synthesized by a one-pot hydrothermal route. These composites exhibit various special nanostructures, rich in abundant edge site exposure and defects, which play an important role in providing active sites for catalyzing hydrogen evolution reaction (HER). When hydrogen peroxide (H2O2) was used as an additive in hydrothermal process, the as-fabricated composite exhibited more efficiency towards HER, showing as low onset overpotential (eta(on)) as -54 mV in 0.5 M H2SO4. Typical H2O2-assisted composite realized a remarkable cathodic current density of 30 mA cm(-2) at an overpotential eta = -137 mV and it possessed a small Tafel slope of 34.13 mV dec(-1). Moreover, it exhibited an excellent cycling stability and superior electronic exchange rate. The results prove that CoMoS2/NGO catalysts have great potential for electrochemical HER. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：11664 / 11674

页数：11

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