In Situ Construction of Stable Tissue‐Directed/Reinforced Bifunctional Separator/Protection Film on Lithium Anode for Lithium–Oxygen Batteries

• DOI: 10.1002/adma.201606552
• Publication Date: 2017-04-21T06:44:45Z
• Authors: Ji‐Jing Xu; Qing‐Chao Liu; Yue Yu; Jin Wang; Jun‐Min Yan; Xin‐Bo Zhang
• Keywords: Separator (oil production); Galvanic anode

To achieve a high reversibility and long cycle life for Li-O2 battery system, the stable tissue-directed/reinforced bifunctional separator/protection film (TBF) is in situ fabricated on surface of metallic lithium anode. It shown that cell composed TBF-modified anodes exhibits an excellent anodic (300 cycles) effectively improved cathodic lifetime (106 cycles). The improvement attributed to ability TBF, which has chemical, electrochemical, mechanical stability, prevent direct contact between anode highly reactive reduced oxygen species (Li2 O2 or its intermediate LiO2 ) cell. believed protection strategy describes here can be easily extended other next-generation energy density batteries using metal as including Li-S Na-O2 batteries.