An efficient bifunctional catalyst of Fe/Fe3C carbon nanofibers for rechargeable Li-O2 batteries

被引：64

作者：

Li, Jiaxin ^{[1
,2
,3
]}

Zou, Mingzhong ^{[2
]}

Chen, Luzhuo ^{[2
]}

Huang, Zhigao ^{[2
]}

Guan, Lunhui ^{[1
,3
]}

机构：

[1] Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Peoples R China

[2] Fujian Normal Univ, Coll Phys & Energy, Fuzhou 350007, Peoples R China

[3] Chinese Acad Sci, Key Lab Design & Assembly Funct Nanostruct, Fuzhou 350002, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2014年 / 2卷 / 27期

关键词：

OXYGEN REDUCTION; AIR BATTERIES; HIGH-CAPACITY; CATHODE; GRAPHENE; ELECTROCATALYSTS; PERFORMANCE; NANOFLAKES; COMPOSITE;

D O I：

10.1039/c4ta01831a

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：

Designing an efficient catalyst is essential to improve the electrochemical performance for Li-O-2 batteries. In this study, the novel composites of Fe/Fe3C carbon nanofibers (Fe/Fe3C-CNFs) were synthesized via a facile electrospinning method and used as cathode catalysts for Li-O-2 batteries. Owing to their favorable structures and desirable bifunctional catalytic activities, the resulting cathodes with a Fe/Fe3C-CNF catalyst exhibited superior electrochemical performance with high specific capacity, good rate capability and cycle stability. It is revealed that the synergistic effect of the fast kinetics of electron transport provided by the CNF support and the high electro-catalytic activity provided by the Fe/Fe3C composites resulted in the excellent performance for Li-O-2 batteries. The preliminary result manifests that the composites of Fe/Fe3C-CNFs are promising cathode electrocatalysts for Li-O-2 batteries.

引用

页码：10634 / 10638

页数：5

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