材料科学
介孔材料
共聚物
聚丙烯腈
超级电容器
化学工程
热解
聚合
聚合物
聚苯乙烯
木筏
链式转移
高分子化学
自由基聚合
有机化学
电容
电极
复合材料
催化作用
化学
工程类
物理化学
作者
Yong Wang,Ling‐Bin Kong,Xiaoming Li,Fen Ran,Yong‐Chun Luo,Long Kang
标识
DOI:10.1016/s1872-5805(15)60191-3
摘要
Novel mesoporous carbons were prepared by the simple pyrolysis of block-copolymers, polyacrylonitrile-b-polystyrene-b-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.
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