Highly Active Electrocatalysis of the Hydrogen Evolution Reaction by Cobalt Phosphide Nanoparticles**

被引：1047

作者：

Popczun, Eric J. ^{[1
,2
]}

Read, Carlos G. ^{[1
,2
]}

Roske, Christopher W. ^{[3
]}

Lewis, Nathan S. ^{[3
]}

Schaak, Raymond E. ^{[1
,2
]}

机构：

[1] Penn State Univ, Dept Chem, University Pk, PA 16802 USA

[2] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA

[3] CALTECH, Div Chem & Chem Engn, Pasadena, CA 91125 USA

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2014年 / 53卷 / 21期

基金：

美国国家科学基金会;

关键词：

electrocatalysis; hydrogen evolution; metal phosphide; nanomaterials; water splitting; CATALYSTS; ELECTRODES; NANOSHEETS; SITES; MOS2;

D O I：

10.1002/anie.201402646

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Nanoparticles of cobalt phosphide, CoP, have been prepared and evaluated as electrocatalysts for the hydrogen evolution reaction (HER) under strongly acidic conditions (0.50M H2SO4, pH0.3). Uniform, multi-faceted CoP nanoparticles were synthesized by reacting Co nanoparticles with trioctylphosphine. Electrodes comprised of CoP nanoparticles on a Ti support (2mgcm(-2) mass loading) produced a cathodic current density of 20mAcm(-2) at an overpotential of -85mV. The CoP/Ti electrodes were stable over 24h of sustained hydrogen production in 0.50M H2SO4. The activity was essentially unchanged after 400 cyclic voltammetric sweeps, suggesting long-term viability under operating conditions. CoP is therefore amongst the most active, acid-stable, earth-abundant HER electrocatalysts reported to date.

引用

页码：5427 / 5430

页数：4

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