Rh-MoS2 Nanocomposite Catalysts with Pt-Like Activity for Hydrogen Evolution Reaction

被引：228

作者：

Cheng, Yafei ^{[1
]}

Lu, Shunkai ^{[1
]}

Liao, Fan ^{[1
]}

Liu, Liangbin ^{[1
]}

Li, Yanqing ^{[1
]}

Shao, Mingwang ^{[1
]}

机构：

[1] Soochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Suzhou 215123, Jiangsu, Peoples R China

来源：

ADVANCED FUNCTIONAL MATERIALS | 2017年 / 27卷 / 23期

基金：

中国国家自然科学基金;

关键词：

hydrogen evolution reaction; hydrogen spillover; MoS2; Pt-like materials; rhodium; NITROGEN-DOPED GRAPHENE; EFFICIENT; WATER; MOS2; ELECTROCATALYSTS; COBALT; FILMS; NANOSHEETS; H-2; CO;

D O I：

10.1002/adfm.201700359

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

High overpotentials and low efficiency are two main factors that restrict the practical application for MoS2, the most promising candidate for hydrogen evolution catalysis. Here, Rh-MoS2 nanocomposites, the addition of a small amount of Rh (5.2 wt%), exhibit the superior electrochemical hydrogen evolution performance with low overpotentials, small Tafel slope (24 mV dec(-1)), and long term of stability. Experimental results reveal that 5.2 wt% Rh-MoS2 nanocomposite, even exceeding the commercial 20 wt% Pt/C when the potential is less than -0.18 V, exhibits an excellent mass activity of 13.87 A mg(metal)(-1) at -0.25 V, four times as large as that of the commercial 20 wt% Pt/C catalyst. The hydrogen yield of 5.2 wt% Rh-MoS2 nanocomposite is 26.3% larger than that of the commercial 20 wt% Pt/C at the potential of -0.25 V. The dramatically improved electrocatalytic performance of Rh-MoS2 nanocomposites may be attributed to the hydrogen spillover from Rh to MoS2.

引用

页数：6

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