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All solid-state supercapacitor with phosphotungstic acid as the proton-conducting electrolyte

descriptionPublicationkeyboard_double_arrow_right Article , Journal 15 Jan 2004Publisher:Elsevier BVJournal:Solid State Ionics, volume 166, pages 61-67 (issn: 0167-2738,

Authors: X.G. Zhang; Yonggang Wang;

doi: 10.1016/j.ssi.2003.11.001

All solid-state supercapacitor with phosphotungstic acid as the proton-conducting electrolyte

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Abstract

Abstract For the first time, the proton-conducting composite phosphotungstic acid PTA/Al 2 (SO 4 ) 3 ·18H 2 O was used as the electrolyte of symmetric supercapacitor based on PANI. The optimum weight ratio of PTA/Al 2 (SO 4 ) 3 ·18H 2 O for using in this supercapacitor was also reported. Electrochemical tests prove that the supercapacitor using this kind of composite as electrolyte has high capacitance performance. Its capacitance is as high as 240 F/g at 6 mA. It was more important that it has long cycle life. After 1000 cycles, the attenuation of the capacitance is less than 10% and the coulombic efficiency is still greater than 96%.

Related Organizations

Xinjiang University
China (People's Republic of)
Minjiang University
China (People's Republic of)
Minjiang University
China (People's Republic of)

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