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Poly(acrylonitrile-methyl methacrylate) (AMMA) plasticized with 1 m LiBF 4 dissolved in γ-butyrolactone (GBL) liquid electrolyte was studied as a gel polymer electrolyte (GPE) of Li-ion cell. Typically, a GPE composed of 12 wt.% AMMA and 88 wt.% liquid electrolyte has an ionic conductivity of 3.9 mS/cm at 20 o C and 1.1 mS/cm at -30 o C. Results of cyclic voltammetry showed...
We report a new approach toward formulating an electrolyte for low temperature operation of Li-ion batteries. The core of this new approach is to use LiBF 4 salt instead of LiPF 6 , which is the chosen solute in the state-of-the-art Li-ion electrolytes. We found that although LiBF 4 -based electrolyte has lower ionic conductivity than the LiPF 6 analogue, it provides...
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