One-step synthesis of high-performance porous carbon from corn starch for supercapacitor

被引：44
作者：
Pang, Liyun [1 ]
Zou, Bo [1 ]
Han, Xue [1 ]
Cao, Liyuan [1 ]
Wang, Wei [1 ]
Guo, Yupeng [1 ]
机构：
[1] Jilin Univ, Coll Chem, Qianjin St 2699, Changchun 130012, Peoples R China
来源：
MATERIALS LETTERS | 2016年 / 184卷
关键词：
Corn starch; Porous carbon; Carbon materials; Structural; Supercapacitor; H3PO4 CHEMICAL ACTIVATION; ELECTRODE MATERIALS;
D O I：
10.1016/j.matlet.2016.07.147
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The novel route for preparation of high-performance porous carbon from corn starch by a one-step process of chemical activation with H3PO4 was studied in this paper. The resulting porous carbon showed a high specific surface area of 1167 m(2) g(-1) and a large pore volume of 1.80 cm(3) g(-1). The maximum specific capacitance was up to 162 F g(-1) at a current density of 0.625 A g(-1), which was higher than commercial carbon (100 F g(-1)). Meanwhile, the electrode exhibited larger energy density (22.5 Wh kg(-1) at a power density of 313 W kg(-1)) and longer cycle stability with above 93% capacitance retention after 5000 cycles. The better capacitive behavior was ascribed to unique pore structure, which indicated the porous carbon will be an ideal electrode material for supercapacitor. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：88 / 91
页数：4
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