PVDF/PAN/SiO2　polymer　electrolyte　membranes　based　on　non-woven　fabrics　were　prepared　via　introducing　a　chemical　reaction　into　Loeb-Sourirajan　(L-S)　phase　inversion　process.　It　was　found　that　physical　properties　(porosity,　electrolyte　uptake　and　ionic　conductivity)　and　electrochemical　properties　were　obviously　improved.　A　favorable　membrane　structure　with　fully　connective　porous　and　uniform　pore　size　distribution　was　obtained.　The　effects　of　PVDF/PAN　weight　ratio　on　the　morphology,　crystallinity,　porosity,　and　electrochemical　performances　of　membranes　were　studied.　The　optimized　PVDF/PAN　(70/30　w/w)　(designated　as　M-pc30)　polymer　electrolyte　membrane　delivered　excellent　electrolyte　uptake　of　246.8　%　and　the　highest　ionic　conductivity　of　3.32　x　10(-3)　S/cm　with　electrochemical　stability　up　to　5.0　V　(vs.　Li/Li+).　In　terms　of　cell　performance,　the　Li/M-pc30　polymer　electrolyte/LiFePO4　battery　exhibited　satisfactory　electrochemical　properties　including　high　discharge　capacity　of　149　mAh/g　at　0.2　C　rate　and　good　discharge　performance　at　different　current　densities.　The　promising　results　reported　here　clearly　indicated　that　PVDF/PAN/SiO2　polymer　electrolyte　membranes　prepared　by　the　combination　of　phase　inversion　and　chemical　reaction　method　were　promising　enough　to　be　applied　in　power　lithium　ion　batteries.