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An Extremely Simple Method for Protecting Lithium Anodes in Li‐O 2 Batteries
Author(s) -
Zhang Xin,
Zhang Qinming,
Wang XinGai,
Wang Chengyi,
Chen YaNan,
Xie Zhaojun,
Zhou Zhen
Publication year - 2018
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201807985
Subject(s) - anode , lithium (medication) , battery (electricity) , materials science , energy density , lithium battery , energy storage , ethylene oxide , nanotechnology , chemical engineering , electrode , chemistry , ion , engineering physics , composite material , polymer , power (physics) , engineering , organic chemistry , medicine , physics , quantum mechanics , ionic bonding , copolymer , endocrinology
Rechargeable Li‐O 2 batteries have aroused much attention for their high energy density as a promising battery technology; however, the performance of the batteries is still unsatisfactory. Lithium anodes, as one of the most important part of Li‐O 2 batteries, play a vital role in improving the cycle life of the batteries. Now, a very simple method is introduced to produce a protective film on lithium surface via chemical reactions between lithium metals and 1,4‐dioxacyclohexane. The film is mainly composed of ethylene oxide monomers and endows Li‐O 2 batteries with enhanced cycling stability. The film could effectually reduce the morphology changes and suppress the parasitic reactions of lithium anodes. This simple approach provides a new strategy to protect lithium anodes in Li‐O 2 batteries.