کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9760138 | 1498040 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
All solid-state electric double-layer capacitors based on alkaline polyvinyl alcohol polymer electrolytes
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
Solid-state electrochemical double-layer capacitors (ELDCs) based on alkaline polyvinyl alcohol (PVA) solid polymer electrolytes (SPEs) are prepared. Electrochemical capacitance performance of these capacitors is studied by cyclic voltammetry, galvanostatic charge-discharge testing, and ac impedance spectroscopy. For comparison, two types of EDLC cells are constructed and tested. It is found that an EDLC with a PVA polymer electrolyte exhibits much higher capacitance and longer cycle-life than one with the PP/PE separator. The specific capacitance for the EDLC with the PVA-based SPE is in the range of 100-112Â FÂ gâ1, and depends on the scan rate or the charge-discharge current rates. The results also indicate that the solid-state EDLC shows a relatively stable specific capacitance of 100Â FÂ gâ1 after 1000 cycles. The findings suggest that the PVA-based SPE is a promising material for use in EDLCs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 152, 1 December 2005, Pages 303-310
Journal: Journal of Power Sources - Volume 152, 1 December 2005, Pages 303-310
نویسندگان
Chun-Chen Yang, Sung-Ting Hsu, Wen-Chen Chien,