Nitrogen-doped mesoporous carbon derived from biopolymer as electrode material for supercapacitors

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• 作者：Bin Xu ; Shanshan Hou ; Fengling Zhang ; Gaoping Cao ; Mo Chu ; Yushang Yang
• 关键词：Supercapacitor ; Porous carbon ; Nitrogen-doped ; Capacitance ; Rate performance
• 刊名：Journal of Electroanalytical Chemistry
• 出版年：1 January, 2014
• 年：2014
• 卷：712
• 期：Complete
• 页码：146-150
• 全文大小：1388 K

文摘

Nitrogen-doped mesoporous carbons were prepared using a biopolymer, gelatin as precursor by nano-CaCO₃ template method. Although the surface area of the carbon obtained at 800 掳C is only 666 m² g^鈭?, the existence of abundant nitrogen-containing functional groups with a nitrogen content of 10.72 wt% makes the carbon has a relative high capacitance of 198 F g^鈭? in 6 mol L^鈭? KOH aqueous electrolytes. The developed mesoporous structure endows the carbon with good rate capability, and the capacitance can remain 135 F g^鈭? even when the current density increases to 20 A g^鈭?. The carbon also possesses excellent cycle durability, indicating an attractive electrode material for supercapacitors.