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.
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页数：4
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