A New Sealed Lithium-Peroxide Battery with a Co-Doped Li2O Cathode in a Superconcentrated Lithium Bis(fluorosulfonyl)amide Electrolyte

作者：Okuoka Shin ichi; Ogasawara Yoshiyuki; Suga Yosuke; Hibino Mitsuhiro; Kudo Tetsuichi; Ono Hironobu; Yonehara Koji; Sumida Yasutaka; Yamada Yuki; Yamada Atsuo; Oshima Masaharu; Tochigi Eita; Shibata Naoya; Ikuhara Yuichi; Mizuno Noritaka^*

来源：Scientific Reports, 2014, 4(1): 5684.

DOI：10.1038/srep05684

We propose a new sealed battery operating on a redox reaction between an oxide (O2-) 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 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 O2-/O-2(2-) redox reaction between oxide and peroxide with some contribution of the Co2+/Co3+ redox reaction.

• 出版日期2014-7-14