Journal
JOURNAL OF POWER SOURCES
Volume 184, Issue 2, Pages 477-480Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2008.05.027
Keywords
Suspension polymerization; Gel polymer electrolyte; Conductivity; Lithium-ion battery
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A copolymer, polyacrylonitrile-methyl methacrylate P(AN-MMA), was synthesized by suspension polymerization with acrylonitrile (AN) and methyl methacrylate (MMA) as monomers. With this Copolymer, polymer membrane was prepared by phase inversion. The performances of the polymer were characterized by FTIR, SEM, DSC/TG. EIS and LSV. The copolymer contains CH2, CN and CO bonds, and shows its thermal stability up to 300 degrees C. The polymer membrane has a porous structure with an average pore diameter of 0.5 mu m. The conductivity of the polymer electrolyte is 1.25 mS cm(-1) at room temperature, and it is electrochemically stable up to 5 V (vs. Li). Using the polymer electrolyte as the gel polymer electrolyte (GPE). the cell Li/GPE/LiCoO2 shows its cyclic stability as good as the cell with liquid electrolyte. (c) 2008 Elsevier B.V. All rights reserved.
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