Hierarchical porous carbon hollow-spheres as a high performance electrical double-layer capacitor material

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• 作者：Yan Han ; Xiaoting Dong ; Cui Zhang ; Shuangxi Liu ; ^{sxliu@nankai.edu.cn}
• 关键词：Carbon hollow-spheres ; Hierarchical porous structure ; Hydrothermal treatment ; Electrochemical performances ; Supercapacitor
• 刊名：Journal of Power Sources
• 出版年：2012
• 期刊代码：58_03787753
• 类别：ce
• 出版时间：1 August, 2012
• 卷：211
• 期：Complete
• 页码：92-96
• 文件大小：797 K

摘要

Dispersed carbon hollow-spheres with micropore shells and meso/macropore cores are prepared through a simple and efficient hydrothermal treatment directly using colloidal silica as template. The as-prepared hollow spheres are used as supercapacitor electrode material and exhibit high specific capacitance (about 270聽F聽g^鈭? at 0.5聽A聽g^鈭? in KOH aqueous electrolyte), long cyclic life and excellent rate capability, which is applicable for high performance electrical double-layer capacitors.