کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9760454 | 1498048 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electrochemical characterization of electrospun activated carbon nanofibres as an electrode in supercapacitors
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Electrochemical characterization of electrospun activated carbon nanofibres as an electrode in supercapacitors Electrochemical characterization of electrospun activated carbon nanofibres as an electrode in supercapacitors](/preview/png/9760454.png)
چکیده انگلیسی
A new form of nanofibre web electrode has been fabricated for a supercapacitor using electrospun polybenzimidazol (PBI)-based activated carbon nanofibres. A PBI solution in dimethyl acetamide (DMAc) is electrospun to a fibre web that consists of 250 nm ultra-fine fibres. The web is successfully activated by steam of 30 vol.% and the specific surface area of the activated web is in the range of 500-1220 m2 gâ1. The electrochemical properties of electrodes and the capacitive behaviour of the resulting capacitors are systematically studied using cyclic voltammetry, ac impedance and constant-current discharge tests. The specific capacitance ranges from 35 to 202 F gâ1, depending on the activation temperature. The nanofibre web activated at 800 °C exhibits the largest specific surface area and results in the highest capacitance. The capacitance of the electrical double-layer capacitor is strongly dependent on the specific surface area, pore volume, and resistivity of the samples.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 142, Issues 1â2, 24 March 2005, Pages 382-388
Journal: Journal of Power Sources - Volume 142, Issues 1â2, 24 March 2005, Pages 382-388
نویسندگان
Chan Kim,