Multiple Phases of Molybdenum Carbide as Electrocatalysts for the Hydrogen Evolution Reaction

被引：789

作者：

Wan, Cheng ^{[1
]}

Regmi, Yagya N. ^{[1
]}

Leonard, Brian M. ^{[1
]}

机构：

[1] Univ Wyoming, Dept Chem, Laramie, WY 82071 USA

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2014年 / 53卷 / 25期

关键词：

carbides; electrocatalysis; molybdenum; nanocatalysis; nanoparticles; ACTIVE EDGE SITES; MOS2; CATALYSTS; NANOSHEETS; BORIDE; PLANET;

D O I：

10.1002/anie.201402998

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Molybdenum carbide has been proposed as a possible alternative to platinum for catalyzing the hydrogen evolution reaction (HER). Previous studies were limited to only one phase, beta-Mo2C with an Fe2N structure. Here, four phases of Mo-C were synthesized and investigated for their electrocatalytic activity and stability for HER in acidic solution. All four phases were synthesized from a unique amine-metal oxide composite material including gamma-MoC with a WC type structure which was stabilized for the first time as a phase pure nanomaterial. X-ray photoelectron spectroscopy (XPS) and valence band studies were also used for the first time on gamma-MoC. gamma-MoC exhibits the second highest HER activity among all four phases of molybdenum carbide, and is exceedingly stable in acidic solution.

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页码：6407 / 6410

页数：4

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