کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1788910 1023483 2010 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of air-oxidation on electric double layer capacitances of multi-walled carbon nanotube electrodes
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Influence of air-oxidation on electric double layer capacitances of multi-walled carbon nanotube electrodes
چکیده انگلیسی

In this work, air-oxidized multi-walled carbon nanotube (MWCNT) electrodes have been prepared from catalytically grown MWCNTs of high purity and narrow diameter distribution. The experimental results show that air-oxidation modifies the intrinsic structure of individual MWCNTs and a little improves the dispersity of the MWCNTs. The specific capacitances of the electrodes in electric double layer capacitors (EDLCs) based on oxidized MWCNTs are obviously improved through air-oxidation. The specific capacitance of 50 F/g is obtained in the air-oxidized MWCNTs at 600 °C on a single cell device with 35 wt% H2SO4 as an electrolyte. This is probably increased BET specific surface area and mesopore volume of the oxidized MWCNT electrode materials of EDLCs. These properties are, therefore highly desirable for the development of electrochemical capacitors with high power and long cycle life.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Current Applied Physics - Volume 10, Issue 1, January 2010, Pages 241–244
نویسندگان
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