High performance supercapacitors based on highly conductive nitrogen-doped graphene sheets

被引：272
|
作者：
Qiu, Yongcai [1 ]
Zhang, Xinfeng [1 ]
Yang, Shihe [1 ]
机构：
[1] Hong Kong Univ Sci & Technol, Nano Sci & Technol Program, Dept Chem, William Mong Inst Nano Sci & Technol, Kowloon, Hong Kong, Peoples R China
来源：
PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2011年 / 13卷 / 27期
关键词：
ELECTROCHEMICAL CAPACITORS; ACTIVATED CARBON; ENERGY-STORAGE; GRAPHITE OXIDE; ULTRACAPACITORS; REDUCTION; BATTERIES; ELECTRODE;
D O I：
10.1039/c1cp21148j
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：
Thermal nitridation of reduced graphene oxide sheets yields highly conductive (similar to 1000-3000 S m(-1)) N-doped graphene sheets, as a result of the restoration of the graphene network by the formation of C-N bonded groups and N-doping. Even without carbon additives, supercapacitors made of the N-doped graphene electrodes can deliver remarkable energy and power when operated at higher voltages, in the range of 0-4 V.
引用
收藏
页码：12554 / 12558
页数：5
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