Efficient Hydrogen Evolution Electrocatalysis at Alkaline pH by Interface Engineering of Ni2P-CeO2

被引：85

作者：

Zhang, Ling ^{[1
]}

Ren, Xiang ^{[1
]}

Guo, Xiaodong ^{[2
]}

Liu, Zhiang ^{[3
]}

Asiri, Abdullah M. ^{[4
]}

Li, Baihai ^{[5
]}

Chen, Liang ^{[6
]}

Sun, Xuping ^{[1
]}

机构：

[1] Sichuan Univ, Coll Chem, Chengdu 610064, Sichuan, Peoples R China

[2] Sichuan Univ, Coll Chem Engn, Chengdu 610065, Sichuan, Peoples R China

[3] Qufu Normal Univ, Coll Chem & Chem Engn, Qufu 273165, Peoples R China

[4] King Abdulaziz Univ, Chem Dept, Jeddah 21589, Saudi Arabia

[5] Univ Elect Sci & Technol China, Sch Energy Sci & Engn, Chengdu, Sichuan, Peoples R China

[6] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China

来源：

INORGANIC CHEMISTRY | 2018年 / 57卷 / 02期

基金：

中国国家自然科学基金;

关键词：

NICKEL PHOSPHIDE NANOPARTICLES; NOBLE-METAL ELECTROCATALYST; CARBON NANOTUBES; OXYGEN EVOLUTION; BIFUNCTIONAL ELECTROCATALYSTS; HYBRID CATALYSTS; NANOSHEET ARRAY; WATER; NANOARRAY; CATHODE;

D O I：

10.1021/acs.inorgchem.7b02665

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

It is of significant importance to develop effective non-noble-metal catalysts for hydrogen evolution electrocatalysis under basic conditions. In this study, we demonstrate the facile construction of a Ni2P-CeO2 interface based on the central point that low-temperature phosphidation of the NiO-CeO2 precursor only converts NiO into Ni2P selectively. The resulting Ni2P-CeO2 nanosheet array on Ti mesh behaves as a durable catalyst for alkaline hydrogen evolution reaction (HER) electrocatalysis, and it can reach 20 mA cm(-2) at an overpotential of 84 mV in 1.0 M KOH, outperforming all reported Ni phosphide HER catalysts. Density functional theory calculations reveal that the Ni2P-CeO2 interface can promote water dissociation and optimize hydrogen adsorption free energy.

引用

页码：548 / 552

页数：5

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