We have fabricated a poly(vinylidene fluoride)(PVdF)/poly(ethylene glycol diacrylate)(PEGDA) blend membranes incorporated with liquid electrolyte for Li rechargeable batteries. We developed PVdF/PEGDA/Nafion blend for proton membrane fuel cells (PEMFC). UV or thermally cured PEGDA improved cycle performance of Li cells at high temperature by increasing thermal stability of PVdF and enhanced proton conductivity of Nafion/PVdF blend membrane by increased water retention. The Li cell capacity of PVdF/PEGDA reached 120 mAh/g, and ternary blend membrane for PEMFC showed maximum power of 350 mW/cm(2).