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

ABSTRACT: We propose a new sealed battery operating on a redox reaction between an oxide (O(2-)) and a peroxide (O2(2-)) with its theoretical specific energy of 2570 Wh kg(-1) (897 mAh g(-1), 2.87 V) and demonstrate that a Co-doped Li2O 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-)/O2(2-) redox reaction between oxide and peroxide with some contribution of the Co(2+)/Co(3+) redox reaction.

SUBMITTER: Okuoka S

PROVIDER: S-EPMC4097343 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature

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

Okuoka Shin-ichi S Ogasawara Yoshiyuki Y Suga Yosuke Y Hibino Mitsuhiro M Kudo Tetsuichi T Ono Hironobu H Yonehara Koji K Sumida Yasutaka Y Yamada Yuki Y Yamada Atsuo A Oshima Masaharu M Tochigi Eita E Shibata Naoya N Ikuhara Yuichi Y Mizuno Noritaka N

Scientific reports 20140714

We propose a new sealed battery operating on a redox reaction between an oxide (O(2-)) and a peroxide (O2(2-)) with its theoretical specific energy of 2570 Wh kg(-1) (897 mAh g(-1), 2.87 V) and demonstrate that a Co-doped Li2O 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-)/O2(2-) redox reaction ...[more]

PMID: 25023009

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