Electrochemical performance of nonflammable polymeric gel electrolyte containing triethylphosphate

Boor Singh Lalia, Takayoshi Fujita, Nobuko Yoshimoto, Minato Egashira, Masayuki Morita

doi:10.1016/j.jpowsour.2008.09.075

Electrochemical performance of nonflammable polymeric gel electrolyte containing triethylphosphate

DOI Web Site Web Site 被引用文献3件

書誌事項

公開日: 2009-01

権利情報

https://www.elsevier.com/tdm/userlicense/1.0/

DOI

10.1016/j.jpowsour.2008.09.075

公開者: Elsevier BV

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説明

Abstract Nonflammable polymeric gel electrolyte has been prepared by immobilizing 1 M LiBF4/EC + DEC + TEP (55:25:20, v/v/v, EC: ethylene carbonate, DEC: diethyl carbonate and TEP: triethylphosphate) solution in poly(vinylidene fluoride-co-hexafluoro propylene) (PVdF-HFP) where TEP acts as a fire-retardant solvent in the gel electrolyte. The polymeric gel electrolyte has a high value of ionic conductivity of 1.76 mS cm−1 at 28 °C. Thermal safety calorimetry (TSC) experiments show good thermal stability of the gel electrolyte. Cyclic voltammetry and charge/discharge cycling tests were performed on LiMn2O4/gel electrolyte and graphite/gel electrolyte half cells. The gel electrolyte works well for graphite/LiMn2O4 cell although some improvement in the cycleability of the graphite electrode is still needed.