Molybdenum carbide nanoparticles supported on nitrogen-doped carbon as efficient electrocatalysts for hydrogen evolution reaction

被引：14

作者：

Tao, Yuanhua ^{[1
]}

Wang, Xueguang ^{[1
]}

Yue, Shengnan ^{[1
]}

Li, Fei ^{[1
]}

Huang, Haigen ^{[1
]}

Lu, Xionggang ^{[1
]}

机构：

[1] Shanghai Univ, State Key Lab Adv Special Steel, Sch Mat Sci & Engn, Shanghai 200072, Peoples R China

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2019年 / 842卷

基金：

中国国家自然科学基金;

关键词：

Molybdenum carbide; N species; Nanoparticles; Hydrothermal method; Hydrogen evolution reaction; HYDROTHERMAL SYNTHESIS; CATALYSTS; GRAPHENE; NANOTUBES; HETEROJUNCTION; PERFORMANCE; COMPOSITES; REDUCTION; NITRIDES; DESIGN;

D O I：

10.1016/j.jelechem.2019.04.068

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Transition carbides have been studied as one of the most promising non-precious-metal catalysts for hydrogen evolution reaction (HER) due to analogous electronic structure to precious metals. Herein, molybdenum carbide nanoparticles supported on nitrogen-doped carbon (Mo2C/NC) have been successfully synthesized through a facile and environmentally-friendly hydrothermal method. The nitrogen content is adjusted by varying the molar ratio of glucose (G) and glucosamine hydrochloride (GH). With an optimal G/GH ratio of 0.6, Mo2C/NC-0.6 nanoparticles exhibit a low onset reduction potential of 95 mV with a Tafel slope of 79.2 mV dec(-1), an over potential of 168 mV at cathodic current density of 10 mA cm(-2) and good stability in acidic media. The high electrocatalytic activity of Mo2C/NC-0.6 can be attributed to high specific surface area, synergistic effect between Mo2C and N species, and the conductive N-doped carbonaceous matrix. This study may provide a promising strategy for synthesizing efficient water splitting catalysts with great electrocatalytic activities.

引用

页码：89 / 97

页数：9