Mesoporous carbons for supercapacitors obtained by the pyrolysis of block copolymers

被引：13

作者：

Wang Yong ^{[1
]}

Kong Ling-bin ^{[1
,2
]}

Li Xiao-ming ^{[1
]}

Ran Fen ^{[1
]}

Luo Yong-chun ^{[2
]}

Kang Long ^{[2
]}

机构：

[1] Lanzhou Univ Technol, Sch Mat Sci & Engn, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China

[2] Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Peoples R China

来源：

NEW CARBON MATERIALS | 2015年 / 30卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Block copolymer; Mesoporous carbon; Polymer carbonization; Energy storage; Supercapacitor;

D O I：

10.1016/S1872-5805(15)60191-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Novel mesoporous carbons were prepared by the simple pyrolysis of block-copolymers, polyacrylonitrile-b-polystyreneb-polyacrylonitrile (PAN,b-PS-b-PAN), in which PAN generates a carbon network and PS is released to form mesopores after pyrolysis. The' block-copolymers were synthesized by reversible addition-fragmentation chain transfer (RAFT) polymerization and the molecular weight of each polymer block can be designed to tailor the porous structure of the mesoporous carbons. The carbons have high specific surface areas and a well-controlled mesopore size. The best mesoporous carbon has a high specific capacitance of 185 F.g(-1) at 0.625 A(.)g(-1) with a high power capability and a remarkable cycle stability in 2 mol/L KOH aqueous electrolyte.

引用

收藏

页码：302 / 309

页数：8

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