کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
190699 459705 2010 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Investigation of polymer electrolyte hybrid supercapacitor based on manganese oxide–carbon electrodes
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Investigation of polymer electrolyte hybrid supercapacitor based on manganese oxide–carbon electrodes
چکیده انگلیسی

A hybrid supercapacitor based on manganese oxide, activated carbon and polymer electrolyte was developed and electrochemically investigated. The capacitive performance obtained from the polymer electrolyte based supercapacitor was similar to that of an aqueous electrolyte based supercapacitor, tested for comparison in the same operative conditions. A durability test carried out for 2500 cycles showed stable and slowly increasing performance. The specific capacitance of hybrid supercapacitor was 48 F g−1 (192 F g−1 as a mean one electrode capacitance), in which that of the positive electrode was 384 F g−1 of MnO2 and that of negative electrode 117 F g−1 of carbon. The impedance analysis evidenced that although the polymer electrolyte based hybrid supercapacitor showed higher resistance compared to that of the liquid electrolyte based supercapacitor, this drawback was counterbalanced by better ion transport features, which were evident at lower frequencies, where similar values of capacitances were obtained from the different supercapacitors.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 55, Issue 25, 30 October 2010, Pages 7436–7442
نویسندگان
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