Lithium–oxygen (Li–O₂) batteries with high reversibility require a stable electrolyte against the side reactions with Li-metal anode and reactive oxygen species. Moreover, an electrolyte that can effectively utilize the low partial pressure of oxygen in the atmosphere has significant effect on the practical application of Li–air batteries. In this study, a localized high-concentration electrolyte (LHCE) was developed using 1H,1H,5H-octafluoropentyl 1,1,2,2-tetrafluoroethyl ether (OTE) as a diluent, which satisfies all these conditions simultaneously. The OTE-based LHCE exhibits much improved electrochemical performance in Li–O₂ batteries and Li–air batteries in comparison to the conventional electrolyte and high-concentration electrolyte. The design principles of this electrolyte also provide important guidelines for research to further develop new electrolytes for Li–O₂ and Li–air batteries.

中文翻译：

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具有高电化学稳定性和氧溶解度的优化电解液，用于锂氧电池和锂空气电池

具有高可逆性的锂氧（Li–O ₂）电池需要稳定的电解质，以防止与锂金属阳极和活性氧的副反应。此外，一种可以有效利用大气中低氧分压的电解质，对锂空气电池的实际应用具有重要影响。在这项研究中，使用1H，1H，5H-八氟戊基1,1,2,2-四氟乙基醚（OTE）作为稀释剂开发了一种局部高浓度电解质（LHCE），该电解质可同时满足所有这些条件。基于OTE的LHCE在Li–O _2中表现出大大改善的电化学性能电池和锂空气电池与常规电解质和高浓度电解质相比。该电解质的设计原理也为进一步开发用于Li-O ₂和Li-air电池的新型电解质的研究提供了重要指导。