Solid-state electrolytes provide excellent electrochemical stability, mechanical strength, and safety as compared to conventional liquid electrolytes for lithium-ion batteries. Recent advancements in polymer electrolytes mixed with nanofillers have enhanced ionic conductivity and stability owing to the interaction between nanoscale fillers and polymer matrix/lithium salt. However, the dispersion of isolated nanofillers affects the continuous lithium-ion transport pathways, thereby preventing the composite electrolyte from further improving its conductivity and stability. In this study, by using a sol-gel-template method, we prepared Li