Non-polar ether-based electrolyte solutions for stable high-voltage non-aqueous lithium metal batteries

Abstract The electrochemical instability of ether-based electrolyte solutions hinders their practical applications in high-voltage Li metal batteries. To circumvent this issue, here, we propose a dilution strategy to lose the Li + /solvent interaction and use the dilute non-aqueous electrolyte solution in high-voltage lithium metal batteries. We demonstrate that in a non-polar dipropyl ether (DPE)-based electrolyte solution with lithium bis(fluorosulfonyl) imide salt, the decomposition order of solvated species can be adjusted to promote the Li + /salt-derived anion clusters decomposition over free ether solvent molecules. This selective mechanism favors the formation of a robust cathode electrolyte interphase…

• UD
  U.S. Department of Energy
• PU
  Purdue University
• SB
  Stony Brook University
• OO
  Office of Science
• OO
  Office of Naval Research

  Awards: N00014-22, N000142112070, N00014
• BA
  Biological and Environmental Research
• AN
  Argonne National Laboratory
• PN
  Pacific Northwest National Laboratory