Ion bridging enables high-voltage polyether electrolytes for quasi-solid-state batteries.

ABSTRACT: Polyether electrolytes have been widely recognized for their favorable compatibility with lithium-metal, yet they are hampered by intrinsically low oxidation thresholds, limiting their potential for realizing high-energy Li-metal batteries. Here, we report a general approach involving the bridge joints between non-lithium metal ions and ethereal oxygen, which significantly enhances the oxidation stability of various polyether electrolyte systems. To demonstrate the feasibility of the ion-bridging strategy, a Zn²⁺ ion-bridged polyether electrolyte (Zn-IBPE) with an extending electrochemical stability window of over 5 V is prepared, which enables good cyclability in 4.5 V Li||LiCoO₂ batteries. Ampere-hour-level quasi-solid-state batteries of SiO-graphite||LiNi_0.8</

SUBMITTER: Hou T 

PROVIDER: S-EPMC11754442 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature