An Extremely Simple Method for Protecting Lithium Anodes in Li-O-2 Batteries

作者：Zhang, Xin; Zhang, Qinming; Wang, Xin-Gai; Wang, Chengyi; Chen, Ya-Nan; Xie, Zhaojun; Zhou, Zhen^*

来源：Angewandte Chemie - International Edition, 2018, 57(39): 12814-12818.

DOI：10.1002/anie.201807985

• 1,4-dioxacyclohexane
• lithium metal anodes
• lithium-oxygen batteries
• protective films

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.

• 出版日期2018-9-24
• 单位南开大学