Fabrication of Nitrogen-Doped Hollow Mesoporous Spherical Carbon Capsules for Supercapacitors

被引：58

作者：

Chen, Aibing ^{[1
]}

Xia, Kechan ^{[1
]}

Zhang, Linsong ^{[2
]}

Yu, Yifeng ^{[1
]}

Li, Yuetong ^{[1
]}

Sun, Hexu ^{[1
]}

Wang, Yuying ^{[1
]}

Li, Yunqian ^{[1
]}

Li, Shuhui ^{[1
]}

机构：

[1] Hebei Univ Sci & Technol, Coll Chem & Pharmaceut Engn, Shijiazhuang 050018, Peoples R China

[2] Xingtai Polytech Coll, Dept Resources & Environm Engn, Xingtai 054000, Peoples R China

来源：

LANGMUIR | 2016年 / 32卷 / 35期

关键词：

POROUS CARBON; ELECTRODE MATERIAL; HYBRID ELECTRODE; LOW-COST; SPHERES; PERFORMANCE; GRAPHENE; OXYGEN; POLYANILINE; NANOSPHERES;

D O I：

10.1021/acs.langmuir.6b02250

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A novel "dissolution-capture" method for the fabrication of nitrogen-doped hollow mesoporous spherical carbon capsules (N-HMSCCs) with high capability for supercapacitor is developed. The fabrication process is performed by depositing mesoporous silica on the surface of the polyacrylonitrile nanospheres, followed by a dissolution-capture process occurring in the polyacrylonitrile core and silica shell. The polyacrylonitrile core is dissolved by dimethylformamide treatment to form a hollow cavity. Then, the polyacrylonitrile is captured into the mesochannel of silica. After carbonization and etching of silica, N-HMSCCs with uniform mesopore size are produced. The N-HMSCCs show a high specific capacitance of 206.0 F g(-1) at a current density of 1 A g(-1) in 6.0 M KOH due to its unique hollow nanostructure, high surface area, and nitrogen content. In addition, 92.3% of the capacitance of N-HMSCCs still remains after 3000 cycles at 5 A g(-1).The "dissolution-capture" method should give a useful enlightenment for the design of electrode materials for supercapacitor.

引用

页码：8934 / 8941

页数：8

共 61 条

[1] A self-supporting electrode for supercapacitors prepared by one-step pyrolysis of carbon nanotube/polyacrylonitrile blends [J].