Single-ion conducting polymer electrolytes (SIPEs) are among the most promising candidates to realize lithium-metal batteries, which commonly suffer from the risk of lithium dendrite growth and continuous electrolyte decomposition at the lithiumelectrolyte interface. Herein, we report the introduction of lithium nitrate (LiNO3) as an additive into a SIPE based on a poly(ethylene oxide) backbone and grafted perfluorosulfonate anions. By comparing SIPEs with and without LiNO3 concerning, e.g., the charge transport, electrochemical stability, reversibility of the lithium stripping/plating process, electrode morphology and surface composition, it appears that the introduction of LiNO3 yields a thinner, but more robust solid electrolyte interphase, which greatly benefits the eventual performance, Coulombic efficiency, and reversibility of the lithium stripping and plating. The advantageous effect of LiNO3 is finally confirmed in Li|SIPE|LFP solid-state battery cells providing a substantially longer cycle life.
- Lithium Nitrate as a SEI-Stabilizing Additive in Single-Ion Conducting Polymer Electrolytes for Lithium–Metal Batteries
- Yunfan Shao - Institut polytechnique de GrenobleTony Bertaux - Institut polytechnique de GrenobleKai Shi - Karlsruhe Institute of TechnologyMaider Zarrabeitia - Karlsruhe Institute of TechnologyFannie Alloin - Institut polytechnique de GrenobleDominic Bresser - Helmholtz-Institute UlmCristina Iojoiu - Institut polytechnique de Grenoble
- ACS Applied Materials & Interfaces, Vol.18(4), pp.6912-6925
- 99196175909311
- Université de Montpellier
- English
- Journal article
- hal-05526085