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A Synergistic System for Lithium–Oxygen Batteries in Humid Atmosphere Integrating a Composite Cathode and a Hydrophobic Ionic Liquid‐Based Electrolyte
Author(s) -
Wu Shichao,
Tang Jing,
Li Fujun,
Liu Xizheng,
Yamauchi Yusuke,
Ishida Masayoshi,
Zhou Haoshen
Publication year - 2016
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201505420
Subject(s) - electrolyte , materials science , cathode , ionic liquid , chemical engineering , lithium (medication) , composite number , battery (electricity) , atmosphere (unit) , glovebox , oxide , inorganic chemistry , composite material , electrode , organic chemistry , chemistry , metallurgy , medicine , power (physics) , physics , quantum mechanics , engineering , thermodynamics , endocrinology , catalysis
Moisture in air is a major obstacle for realizing practical lithium‐air batteries. Here, we integrate a hydrophobic ionic liquid (IL)‐based electrolyte and a cathode composed of electrolytic manganese dioxide and ruthenium oxide supported on Super P (carbon black) to construct a promising system for Li‐O 2 battery that can be sustained in humid atmosphere (RH: 51%). A high discharge potential of 2.94 V and low charge potential of 3.34 V for 218 cycles are achieved. The outstanding performance is attributed to the synergistic effect of the unique hydrophobic IL‐based electrolyte and the composite cathode. This is the first time that such excellent performance is achieved in humid O 2 atmosphere and these results are believed to facilitate the realization of practical lithium‐air batteries.