A monofluoride ether-based electrolyte solution for fast-charging and low-temperature non-aqueous lithium metal batteries

Abstract The electrochemical stability window of the electrolyte solution limits the energy content of non-aqueous lithium metal batteries. In particular, although electrolytes comprising fluorinated solvents show good oxidation stability against high-voltage positive electrode active materials such as LiNi 0.8 Co 0.1 Mn 0.1 O 2 (NCM811), the ionic conductivity is adversely affected and, thus, the battery cycling performance at high current rates and low temperatures. To address these issues, here we report the design and synthesis of a monofluoride ether as an electrolyte solvent with Li-F and Li-O tridentate coordination chemistries. The monofluoro substituent (-CH 2 F) in the solvent molecule, differently…

• NN
  National Natural Science Foundation of China

  Awards: 22078144, 22109066
• NS
  Natural Science Foundation of Guangdong Province

  Awards: 2022A1515011005, 2023A1515010686
• SA
  Science and Technology Planning Project of Guangdong Province

  Award: 2021A0505110001
• BA
  Basic and Applied Basic Research Foundation of Guangdong Province

  Awards: 2019A1515110881, 2022A1515011005