Sn-Doped Beta Zeolite with Rich Lewis Acidic Sites Enhances Lithium-Ion Dissociation and Transport in PEO-Based Solid Polymer Electrolytes

at 1 C and 60 °C, and the capacity retention rate is 81.5% after 500 cycles. This work provides theoretical insights into the mechanism of zeolite fillers in SPEs as well as new design concepts.