A new sealed lithium-peroxide battery with a co-doped Li2O cathode in a superconcentrated lithium bis(fluorosulfonyl)amide electrolyte

Shin Ichi Okuoka, Yoshiyuki Ogasawara, Yosuke Suga, Mitsuhiro Hibino, Tetsuichi Kudo, Hironobu Ono, Koji Yonehara, Yasutaka Sumida, Yuki Yamada, Atsuo Yamada, Masaharu Oshima, Eita Tochigi, Naoya Shibata, Yuichi Ikuhara, Noritaka Mizuno

Research output: Contribution to journalArticlepeer-review

67 Citations (Scopus)

Abstract

We propose a new sealed battery operating on a redox reaction between an oxide (O 2 ̂') and a peroxide (O 2 2 ̂') with its theoretical specific energy of 2570 €.Wh kg ̂'1 (897 €.mAh g ̂'1, 2.87 €.V) and demonstrate that a Co-doped Li 2 O cathode exhibits a reversible capacity over 190 €.mAh g ̂'1, a high rate capability, and a good cyclability with a superconcentrated lithium bis(fluorosulfonyl)amide electrolyte in acetonitrile. The reversible capacity is largely dominated by the O 2 ̂' /O 2 2 ̂' redox reaction between oxide and peroxide with some contribution of the Co 2+ /Co 3+ redox reaction.

Original languageEnglish
Article number5684
JournalScientific reports
Volume4
DOIs
Publication statusPublished - 2014 Jul 14
Externally publishedYes

ASJC Scopus subject areas

  • General

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