Influence of different salts in poly(vinylidene fluoride-co-trifluoroethylene) electrolyte separator membranes for battery applications

摘要: Abstract Poly(vinylidene fluoride-co-trifluoroethylene), P(VDF-TrFE) solid polymer electrolytes were prepared using porous membrane soaked in lithium tetrafluoroborate (LiBF4), bis(trifluoromethanesulfonyl)imide (LiTFSI), magnesium triflate (Mg(CF3SO3)2) and sodium (Na(CF3SO3)) electrolyte solution. The effect of the uptake different salts morphology, phase, thermal mechanical properties was determined. ranged from 396% for LiTFSI salt to 529% Mg(CF3SO3)2. It is observed that ionic conductivity dependent anion size present Independently solution, high obtained. In particular, increases 0.32 1.2 mS/cm when temperature increased room 100 °C. membranes immersed solutions show good electrochemical stability as determined by cycle voltammetry. very important parameter affects value electric electrolyte. concluded based on are adequate battery separator applications.