Semi-interpenetrating network polymer electrolytes with increased mechanical robustness and ionic conductivity for stable lithium metal batteries

A semi-IPN gel polymer electrolyte (CP-PE) with a PE skeleton is developed via crosslinked PEGDA. It exhibits excellent stability, enabling a Li|CP-PE|LiFePO 4 cell to maintain 96.2% capacity retention and 99.9% CE over 500 cycles at 0.5C.