Catalytic Effects of Heteroatom-doped Graphene Nanosheets on the Performance of Li-O2 Batteries

被引：7

作者：

Bae, Youngjoon ^{[1
]}

Lim, Hee-Dae ^{[1
]}

Yun, Young Soo ^{[1
]}

Kang, Kisuk ^{[1
]}

机构：

[1] Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 151742, South Korea

来源：

JOURNAL OF ELECTROCHEMICAL SCIENCE AND TECHNOLOGY | 2014年 / 5卷 / 02期

关键词：

Li-O-2; batteries; graphene; doping; nanosheets; heteroatom; OXYGEN REDUCTION REACTION; AIR BATTERIES;

D O I：

10.5229/JEST.2014.5.2.37

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Graphene nanosheets (GNS), nitrogen-doped graphene nanosheets (N-GNS), and sulfur-doped graphene nanosheets (S-GNS) were successfully synthesized, and their catalytic effects on the oxygen reduction reaction (ORR) in Li-O-2 batteries were compared. The S-GNS electrode exhibited the highest ORR catalytic activity, resulting in enhanced discharge capacity and power capability. We attributed the enhanced ORR catalytic activity to the increased defect sites on graphene.

引用

页数：4

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