Electrochemical Study on Charge-Discharge Performance of Lithium/Polyazulene Battery

Kenichi Ueyama, Tetsuya Osaka, Katsuhiko Naoi

研究成果: Article査読

11 被引用数 (Scopus)

抄録

Electrodeposited polyazulene (PAz) films show high electroactivity and fast redox switching behavior when polymerized under suitable conditions. Such PAz films are more electroactive than electrodeposited polypyrrole or polyaniline and were successfully applied in a rechargeable lithium battery. We determined suitable polymerization conditions so as to obtain an electroactive PAz film possessing the highest charge-storing ability and fastest electrode processes. Specifically, the electrochemical kinetics (anion doping-undoping process) of PAz films was investigated by varying the polymerizing current density and formation charge. Charge capacity showed a maximum value when polymerized at 1.4 mA cm−2 by passage of 5C cm−2. Cyclic voltammograms coupled with scanning electrons microscope observation of PAz films evidenced that a highly electroactive PAz film can be prepared at 1.4 mA cm−2. The charge-discharge property and cyclability of Li/LiClO4/PAz batteries were studied. Li/LiClO4/PAz batteries showed fairly high and flat discharge voltage (ca. 3.2V), while maintaining 100% coulombic efficiency when charging by ca. 45% of doping level (per unit cathode weight). The Li/LiClO4/PAz battery performed best when PAz film was formed at 1.4 mA cm−2 by passage of 5C cm−2.

本文言語English
ページ(範囲)2444-2449
ページ数6
ジャーナルJournal of the Electrochemical Society
136
9
DOI
出版ステータスPublished - 1989 9

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

フィンガープリント

「Electrochemical Study on Charge-Discharge Performance of Lithium/Polyazulene Battery」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル