A Monodisperse Rh2P-Based Electrocatalyst for Highly Efficient and pH-Universal Hydrogen Evolution Reaction

被引：191

作者：

Yang, Fulin ^{[1
,2
]}

Zhao, Yuanmeng ^{[1
,2
]}

Du, Yeshuang ^{[1
,2
]}

Chen, Yongting ^{[1
,2
]}

Cheng, Gongzhen ^{[1
,2
]}

Chen, Shengli ^{[1
,2
]}

Luo, Wei ^{[1
,2
]}

机构：

[1] Wuhan Univ, Coll Chem & Mol Sci, Wuhan 430072, Hubei, Peoples R China

[2] Hubei Key Lab Electrochem Power Sources Wuhan, Wuhan 430072, Hubei, Peoples R China

来源：

ADVANCED ENERGY MATERIALS | 2018年 / 8卷 / 18期

基金：

中国国家自然科学基金;

关键词：

DFT; hydrogen evolution reaction; monodisperse Rh2P; pH-universal; transition metal phosphides; BIFUNCTIONAL ELECTROCATALYSTS; NICKEL PHOSPHIDE; LOW-COST; CATALYSTS; DESIGN; CARBON; ENERGY; COPPER; ELECTROLYSIS; MOLYBDENUM;

D O I：

10.1002/aenm.201703489

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：

The search for Pt-free electrocatalysts exceeding pH-universal hydrogen evolution reaction (HER) activities when compared to the state-of-the-art commercial Pt/C is highly desirable for the development of renewable energy conversion systems but still remains a huge challenge. Here a colloidal synthesis of monodisperse Rh2P nanoparticles with an average size of 2.8 nm and their superior catalytic activities for pH-universal HER are reported. Significantly, the Rh2P catalyst displays remarkable HER performance with overpotentials of 14, 30, and 38 mV to achieve 10 mA cm(-2) in 0.5 m H2SO4, 1.0 m KOH, and 1.0 M phosphate-buffered saline, respectively, exceeding almost all the documented electrocatalysts, including the commercial 20 wt% Pt/C. Density functional theory calculations reveal that the introduction of P into Rh can weaken the H adsorption strength of Rh2P to nearly zero, beneficial for boosting HER performance.

引用

页数：7

共 58 条

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