Characterization of N-butyl-N-methyl-pyrrolidinium bis(trifluoromethanesulfonyl)imide-based polymer electrolytes for high safety lithium batteries

► PVdF-HFP membrane was prepared by electrospinning. ► Py14TFSI-based gel polymer electrolyte has good physical properties. ► Py14TFSI-based gel polymer electrolyte shows excellent electrochemical properties.