Radio frequency oxygen-plasma treatment of carbon nanotube electrodes for electrochemical capacitors

被引：18

作者：

Lin, Chuen-Chang ^{[1
]}

Huang, Hsien-Chieh ^{[1
]}

机构：

[1] Natl Yunlin Univ Sci & Technol, Dept Chem & Mat Engn, Touliu 64002, Yunlin, Taiwan

来源：

JOURNAL OF POWER SOURCES | 2009年 / 188卷 / 01期

关键词：

Carbon nanotubes; Plasma treatment; Functional groups; Annealing; Electrochemical capacitors; DOUBLE-LAYER CAPACITANCE; ACTIVATED CARBON; COMPOSITE ELECTRODES; BEHAVIOR; OXIDES;

D O I：

10.1016/j.jpowsour.2008.11.100

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Carbon nanotubes were modified by RF (radio frequency) oxygen-plasma at different power levels and times, and subsequently annealed at different temperatures. At the 1000th cycle of potential cycling, maximum specific capacitance of 128 F g(-1) was obtained in 0.1 M H2SO4 and with better plasma treatment conditions (power=100 W and time=30 min) and annealing temperature (350 degrees C). These show its high electrochemical stability and good specific capacitance at a higher sweep rate of 100 mV s(-1). In addition, the higher the power and time, the higher the carbonyl functional group (C=O), leading to higher specific capacitance. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：332 / 337

页数：6

共 27 条

[1] Chemical and electrochemical characterization of porous carbon materials [J].