"Dissolution-Capture" Strategy to Form Monodispersed Nitrogen-Doped Hollow Mesoporous Carbon Spheres

被引：10

作者：

Chen, Aibing ^{[1
]}

Xia, Kechan ^{[1
]}

Yu, Yifeng ^{[1
]}

Sun, Hexu ^{[1
]}

Liu, Lei ^{[1
]}

Ren, Shaofeng ^{[1
]}

Li, Yuetong ^{[1
]}

机构：

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

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2016年 / 163卷 / 14期

基金：

中国国家自然科学基金;

关键词：

PERFORMANCE SUPERCAPACITOR ELECTRODE; PARTIALLY GRAPHITIC STRUCTURE; REDUCED GRAPHENE OXIDE; POROUS CARBON; HIERARCHICAL NANOARCHITECTURE; ELECTROCHEMICAL PERFORMANCE; ORGANIC ELECTROLYTE; MICROSPHERES; NANOPARTICLES; POLYANILINE;

D O I：

10.1149/2.1021614jes

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Monodispersed nitrogen-doped hollow mesoporous carbon spheres (N-HMCSs) have been successfully synthesized using a novel "dissolution-capture" method. The mesoporous silica is uniformly coated on the surface of the polystyrene/polyacrylonitrile composite nanospheres (PS@PAN) core by using a modified Stober method. Then a hollow cavity is formed through the dissolution of the PS@PAN in organic solvent. The dissolved PS@PAN as the carbon and nitrogen precursor is captured in the mesochannels of the silica shell. The obtained N-HMCSs have high specific surface area of 807 m(2) g(-1), uniform mesopore size of 4.1 nm, and nitrogen content of 3.6 at.%. In addition, the N-HMCSs show a high specific capacitance of 212 F g(-1) at a current density of 1 A g(-1) in 6 M KOH electrolyte and capacitance retention of 93.9% after 10000 charge/discharge cycles at 5 A g(-1). The "dissolution-capture" method can give a useful enlightenment for the design of electrode materials for supercapacitors. (C) 2016 The Electrochemical Society. All rights reserved.

引用

页码：A3063 / A3068

页数：6

共 42 条

[1]

[Anonymous], 2011, ANGEW CHEM

[2] High performance supercapacitor prepared from hollow mesoporous carbon capsules with hierarchical nanoarchitecture [J].