Aqueous gel electrolyte based on cross-linked PVA matrix for EDLC

Kunihiko Nakayama, Mitsuo Shibutani, Masashi Ishikawa

Research output: Contribution to journalArticlepeer-review

Abstract

Alkaline polymer gel electrolytes mainly with modified polyvinyl alcohol (PVA) have been prepared for an electric double layer capacitor (EDLC). Their electrochemical characteristics were evaluated by impedance spectroscopy and constant-current charge/discharge measurement. The prepared gel electrolyte film with KOH exhibits excellent flexibility and an ionic conductivity of about 7 × 10-2 S cm-1 at 298 K. The gel electrolyte EDLC shows comparable discharge capacitance to that for EDLC containing a conventional aqueous electrolyte. These results suggest that the gel electrolyte based on the modified PVA is promising material for use in EDLC.

Original languageEnglish
Pages (from-to)886-890
Number of pages5
JournalElectrochemistry
Volume76
Issue number12
DOIs
Publication statusPublished - Dec 2008
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electrochemistry

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