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Fluorinated Ethylene Carbonate as Electrolyte Additive for Rechargeable Na Batteries

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journal contribution
posted on 23.11.2011, 00:00 by Shinichi Komaba, Toru Ishikawa, Naoaki Yabuuchi, Wataru Murata, Atsushi Ito, Yasuhiko Ohsawa
Fluoroethylene carbonate is an efficient electrolyte additive to improve the reversibility of electrochemical sodium insertion for hard-carbon and NaNi1/2Mn1/2O2 electrodes in aprotic Na cells. The additive is also capable of the electrochemical deposition/dissolution of metallic Na with higher reversibility because of improved passivation and suppression of side reactions between Na metal and propylene carbonate solution containing Na salts.