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

被引：231
|
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
收藏
页码：20067 / 20074
页数：8
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