Peanut-Shell-like Porous Carbon from Nitrogen-Containing Poly-N-phenylethanolamine for High-Performance Supercapacitor

详细信息    查看全文

• 作者：Xianjun Wei ; Suige Wan ; Xiaoqiang Jiang ; Zhe Wang ; Shuyan Gao
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2015
• 出版时间：October 14, 2015
• 年：2015
• 卷：7
• 期：40
• 页码：22238-22245
• 全文大小：560K
• ISSN：1944-8252

文摘

An efficient soft-template method is proposed for the synthesis of peanut shell-like porous carbon as high-performance supercapacitor electrode materials. The procedure is based on the pyrolysis and chemical activation processes using N-phenylethanolamine as precursor and KOH as activation agent. In a three-electrode system, the resultant carbon material has a specific capacitance of 356 F g^鈥? at 1 A g^鈥? and a good stability over 1000 cycles. Besides, at a high current density of 30 A g^鈥?, it has a specific capacitance of 249 F g^鈥? and maintains 96% after 10鈥?00 cycles. In two-electrode cell configuration, it delivers about 21.53 Wh kg^鈥? at a current density of 20 A g^鈥?, which is about 7 times higher than the commercial device (<3 Wh kg^鈥?). Both high specific capacitance and excellent cycling stabilities guarantee its utilization in supercapacitors.