Impedance Analysis of Ionic Transport in Polypyrrole-Polyazulene Copolymer and Its Charge-Discharge Characteristics

Katsuhiko Naoi, Ken ichi Ueyama, Tetsuya Osaka, William H. Smyrl

研究成果: Article査読

37 被引用数 (Scopus)

抄録

Ionic transport behavior across an electropolymerized polypyrrole/polyazulene composite film was investigated by using ac impedance analysis, and its charge-discharge characteristics were also studied. Co-electropolymerization of pyrrole and azulene was well defined and fairly stoichiometric in propylene carbonate solution. The charge capacity for the composite films showed a remarkable increase for films with about 50 to 75% of azulene monomer content, and the behavior was correlated with morphological and diffusivity changes. The charge-discharge characteristics were examined for cells with a lithium anode and various polypyrrole/polyazulene composite cathodes. Pure polypyrrole cathodes behaved exactly like a capacitor at low frequency, while pure polyazulene cathodes showed excellent rechargeable behavior with very flat discharge curves. Composite cathodes showed intermediate behavior.

本文言語English
ページ(範囲)494-499
ページ数6
ジャーナルJournal of the Electrochemical Society
137
2
DOI
出版ステータスPublished - 1990 2月

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 再生可能エネルギー、持続可能性、環境
  • 表面、皮膜および薄膜
  • 電気化学
  • 材料化学

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