Pore size control and electrochemical capacitor behavior of chemically activated polyacrylonitrile - Carbon nanotube composite films

被引：24

作者：

Jagannathan, Sudhakar ^{[1
]}

Liu, Tao ^{[1
]}

Kumar, Satish ^{[1
]}

机构：

[1] Georgia Inst Technol, Sch Polymer Text & Fiber Engn, Atlanta, GA 30332 USA

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 2010年 / 70卷 / 04期

关键词：

Activated carbon; Carbon nanotubes; Nano composites; Smart materials; Porosity; SURFACE-AREA CARBON; SUPERCAPACITOR APPLICATION; FIBERS; KOH; REINFORCEMENT; ELECTROLYTES; NANOFIBERS; COAL;

D O I：

10.1016/j.compscitech.2009.12.008

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

Activated polyacrylonitrile (PAN)/carbon nanotube (CNT) composite film based electrodes have been prepared by chemical activation with potassium hydroxide for electrochemical capacitors. This paper analyses the following aspects of specific capacitance, pore size distribution and surface area: influence of activation temperature, molarity of activating agent, composition of PAN/carbon nanotube precursor films and electrolytes. A maximum value of specific capacitance of similar to 302 Fg(-1) was achieved for the samples activated at 800 degrees C. Energy density for PAN/CNT 80/20 sample when tested with ionic liquid/organic electrolyte system was as high as similar to 22 W h kg(-1). Pore size control predominantly below 5 nm was observed in these activated PAN samples. Data analysis showed that micropores make a significant contribution to the capacitance performance of these materials in both 6 M KOH as well as in BMIMBF4/acetonitrile electrolytes. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：593 / 598

页数：6

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