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Investigation of polymer electrolyte hybrid supercapacitor based on manganese oxide–carbon electrodes

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a b s t r a c t
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 supercapacitorwassimilar 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.
Keywords:Supercapacitor, Manganese oxide, Polymer electrolyte, Pseudocapacitance

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Informasi Detail

Judul Seri

Electrochimica Acta

No. Panggil

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Penerbit

: Elsevier Ltd. All rights reserved.., 2010

Deskripsi Fisik

Electrochimica Acta 55 (2010) 7436–7442

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

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