Cobalt nanoparticles encapsulated in nitrogen-doped carbon as a bifunctional catalyst for water electrolysis

被引：237

作者：

Wang, Jing ^{[1
,2
]}

Gao, Dunfeng ^{[1
,2
]}

Wang, Guoxiong ^{[1
]}

Miao, Shu ^{[3
]}

Wu, Haihua ^{[1
,2
]}

Li, Jiayuan ^{[1
,2
]}

Bao, Xinhe ^{[1
,3
]}

机构：

[1] Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100039, Peoples R China

[3] Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2014年 / 2卷 / 47期

基金：

中国国家自然科学基金;

关键词：

HYDROGEN EVOLUTION REACTION; ELECTROCATALYTIC OXYGEN EVOLUTION; MOS2 ULTRATHIN NANOSHEETS; LI-ION BATTERIES; MOLYBDENUM SULFIDE; REDUCTION REACTION; ALKALINE MEDIA; NANOTUBES; EFFICIENT; GRAPHENE;

D O I：

10.1039/c4ta04337e

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 hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) are important electrocatalytic processes in water electrolyzers. Identifying efficient non-precious metal catalysts for HER and OER remains a great challenge for applications in different kinds of electrolyzers. Herein, we report that cobalt nanoparticles encapsulated in nitrogen-doped carbon (Co@N-C) show high activity and durability for HER in a wide pH range and for OER in alkaline medium as a bifunctional catalyst. The HER and OER activities of Co@N-C are higher than those of multiwall carbon nanotube and iron nanoparticles encapsulated in nitrogen-doped carbon with a similar content of nitrogen. Electrolyzer prototypes using Nafion NRE-212 as electrolyte membrane and Co@N-C as cathode or anode catalyst are constructed, showing potential practical applications in water splitting.

引用

页码：20067 / 20074

页数：8

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