Cobalt Oxide Aerogels of Ideal Supercapacitive Properties Prepared with an Epoxide Synthetic Route

被引:264
作者
Wei, Te-Yu [1 ]
Chen, Chun-Hung [1 ]
Chang, Kuo-Hsin [1 ]
Lu, Shih-Yuan [1 ]
Hu, Chi-Chang [1 ]
机构
[1] Natl Tsing Hua Univ, Dept Chem Engn, Hsinchu 30013, Taiwan
关键词
COMPOSITE AEROGELS; SILICA AEROGEL; CARBON; CAPACITANCE; PHOTOLUMINESCENCE; NANOCOMPOSITE; NANOCRYSTALS; CRYSTALLINE; ZEOLITE;
D O I
10.1021/cm9007365
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
Mesoporous structures of high specific surface areas and high porosities, such as aerogels, are ideal for supercapacitor applications. This idea was successfully demonstrated for the first time by taking cobalt oxide aerogels as an example. Cobalt oxide aerogels of excellent supercapacitive properties, including high specific capacitances (the highest ever reported for cobalt oxides, > 600 F/g at a high mass loading of 1 mg/cm(2)) and onset frequencies, and excellent reversibility and cycle stability, were successfully synthesized with an epoxide addition procedure by using cobalt nitrate as the precursor. The present development makes possible the low cost production of high performance supercapacitors of the asymmetric type.
引用
收藏
页码:3228 / 3233
页数:6
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