Changqi Ma

Apr 21, 2023 | nature.com | Junchao Chen |Shuzhou Li |Zheng Liu |Yanbin Shen |Qi Chen |Changqi Ma

AbstractSolid polymer electrolytes (SPEs), which are favorable to form intimate interfacial contacts with electrodes, are promising electrolyte of choice for long-cycling lithium metal batteries (LMBs). However, typical SPEs with easily oxidized oxygen-bearing polar groups exhibit narrow electrochemical stability window (ESW), making it impractical to increase specific capacity and energy density of SPE based LMBs with charging cut-off voltage of 4.5 V or higher.