Due to high dielectric constant and strong chemical and electrochemical resistance, poly (vinylidene fluoride) (PVdF) has become a favourable porous polymer electrolyte in lithium-ion batteries. As a semi-crystalline polymer, PVdF contains both an amorphous phase and a crystalline phase. The blending of poly (methyl methacrylate)(PMMA) into electrospun PVdF membranes can increase the ionic conductivity. In this paper, we report the fabrication of nanofibrous polymer electrolyte membrane of

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... PMMA composite by electrospinning technique. PVdF/PMMA polymer electrolyte was characterized by scanning electron microscope (SEM) and Fourier transform infrared spectra (FT-IR). Electrospun PVdF/PMMA membrane showed a fully interconnected porous structure composed of ultrafine fibers with the diameters in the range of 300-350 nm. FTIR spectra confirmed the miscibility of PMMA with PVdF in the composite PVdF-PMMA fibrous membrane. The observed high porosity (85%) and high electrolyte uptake (285%) of as-synthesized nanofibrous PVdF/PMMA polymer electrolyte improved its ionic conductivity (2.95 × 10 −3 Scm −1 ) at room temperature. Results showed that PVdF-PMMA membrane is of great potential application in polymer batteries.