嵌段共聚物直接热解法制备介孔炭材料及其在超级电容器中的应用

汪勇; 孔令斌; 李晓明; 冉奋; 罗永春; 康龙

doi:10.1016/S1872-5805(15)60191-3

嵌段共聚物直接热解法制备介孔炭材料及其在超级电容器中的应用

doi: 10.1016/S1872-5805(15)60191-3

汪勇¹,
孔令斌^1,2,,
李晓明¹,
冉奋¹,
罗永春²,
康龙²

1.
兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室, 甘肃兰州 730050;
2.
兰州理工大学材料科学与工程学院, 甘肃兰州 730050

基金项目: 国家自然科学基金(51362018,21163010);教育部关键项目(212183).

详细信息

作者简介:
汪勇,硕士研究生.E-mail:gaoxing9999@126.com

通讯作者:
孔令斌,教授.E-mail:konglb@lut.cn

中图分类号: TQ127.1⁺1
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- 被引次数: 0
出版历程
- 收稿日期: 2015-01-05
- 录用日期: 2015-09-07
- 修回日期: 2015-07-25
- 刊出日期: 2015-08-28

Mesoporous carbons for supercapacitors obtained by the pyrolysis of block copolymers

1.
State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China;
2.
School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China

Funds: National Natural Science Foundation of China (51362018, 21163010); Key Project of Chinese Ministry of Education (212183).

摘要

摘要: 以嵌段共聚物为前驱体,通过直接热解聚丙烯腈嵌段苯乙烯(PAN-b-PS-b-PAN)制备新型纳米多孔炭材料。炭材料制备依赖于嵌段共聚物分子的设计,而分子量可控、分布范围较窄的嵌段共聚物则通过可逆加成链转移(RAFT)聚合方法合成。所制炭材料不仅具有较高的比表面积(950 m²·g^-1),且在2~4 nm的介孔范围内孔径得到良好的控制。此外,作为电极材料在2 mol/L KOH电解液中表现出高的比容量(185 F·g^-1,电流密度为0.625 A·g^-1),且显示较好的循环寿命,经10 000 次循环后,能够保持初始比容量的97.5%。通过不同分子量聚合物的设计,制备结构新颖的多孔炭材料,可应用于高性能超级电容器。
- 嵌段共聚物 /
- 介孔炭 /
- 聚合物炭化 /
- 能量存储 /
- 超级电容器
Abstract: 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.
- Block copolymer /
- Mesoporous carbon /
- Polymer carbonization /
- Energy storage /
- Supercapacitor

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