Rigid support–molecular regulation–interface reinforcement synergistic strategy enables PEO-based electrolytes for solid-state lithium batteries

, enhancing interface stability, with the oxidation potential increasing to 5.2 V. The high elastic modulus of GFC and the strong hydrogen bond network endow PEO@GFC-15 with good flexibility. Additionally, the three-dimensional rigid network and non-flammable inorganic LALZTO particles improve its thermal stability. Therefore, the Li plating/stripping stability and electrochemical performance of SSLBs are effectively enhanced by the rigid support-molecular regulation-interface reinforcement synergistic modification strategy. This work provides practical insights for the development of high-performance SSLBs.