Oxygen-enriched electrolytes based on perfluorochemicals for high-capacity lithium-oxygen batteries

Yuki Nishikami, Toshihiro Konishi, Ryo Omoda, Yuichi Aihara, Kenichi Oyaizu, Hiroyuki Nishide

研究成果: Article査読

24 被引用数 (Scopus)

抄録

Electrolytes highly enriched with oxygen for lithium-oxygen (Li-O2) batteries were prepared by combining perfluorohexyl bromide as an oxygen-uptake perfluorochemical (PFC) medium with lithium perfluorooctane sulfonate (LiPFOS) as a perfluoro-surfactant and a supporting electrolyte, which allowed an exceptionally high miscibility of PFCs with tetraethylene glycol dimethyl ether (TEGDME). The electrochemical reduction current of oxygen was enhanced three times in the LiPFOS-TEGDME electrolyte with ca. 60 wt% PFC content in comparison with that of a conventional Li-O2 battery electrolyte, which was ascribed to the high oxygen solubility of the electrolyte. A Li-O2 cell fabricated with the PFC-based electrolyte exhibited an excellent discharging capacity of 6500 mA h g-1 which was approximately 1.5 times higher than that obtained with the conventional electrolyte.

本文言語English
ページ(範囲)10845-10850
ページ数6
ジャーナルJournal of Materials Chemistry A
3
20
DOI
出版ステータスPublished - 2015 5 28

ASJC Scopus subject areas

  • 化学 (全般)
  • 再生可能エネルギー、持続可能性、環境
  • 材料科学(全般)

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