Smart gel polymer electrolytes enlightening high safety and long life sodium ion batteries.

ABSTRACT: The overall performance of sodium-ion batteries, particularly regarding safety and cycle life, remains below expectations due to severe degradation of electrode materials and the electrode/electrolyte interphase. Herein, we develop a smart gel polymer electrolyte for hard carbon||NaNi_1/3Fe_1/3Mn_1/3O₂ batteries through the in situ radical polymerization of a cyanoethylurea-containing methacrylate monomer and an isocyanate-based methacrylate monomer in conventional NaPF₆-carbonate-based electrolytes. We demonstrate that the smart gel polymer electrolyte facilitates the formation of robust electrode/electrolyte interphase layers, thus improving the thermal and chem-electrochemical stability of the electrodes. When the temperature exceeds 1

SUBMITTER: Du L 

PROVIDER: S-EPMC11947271 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature