Preparation and performance analysis of PE-supported P(AN-co-MMA) gel polymer electrolyte for lithium ion battery application |
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Authors: | MM Rao JS Liu WS Li Y Liang DY Zhou |
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Institution: | 1. School of Chemistry and Environment, South China Normal University, Guangzhou 510006, PR China;2. College of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, PR China;3. Key Lab of Technology on Electrochemical Energy Storage and Power Generation in Guangdong Universities, Guangzhou 510006, PR China |
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Abstract: | Copolymer, poly(acrylonitrile-co-methyl methacrylate) (P(AN-co-MMA)), was synthesized by solution polymerization with different mole ratios of monomers, acrylonitrile (AN) and methyl methacrylate (MMA). Polyethylene (PE) supported copolymer and gel polymer electrolyte (GPE) were prepared with this copolymer and their performances were characterized with FTIR, TGA, SEM, and electrochemical methods. It is found that the GPE using the PE-supported copolymer with AN to MMA = 4:1 (mole) exhibits an ionic conductivity of 2.06 × 10−3 S cm−1 at room temperature. The copolymer is stable up to 270 °C. The PE-supported copolymer shows a cross-linked porous structure and has 150 wt% of electrolyte uptake. The GPE is compatible with anode and cathode of lithium ion battery at high voltage and its electrochemical window is 5.5 V (vs. Li/Li+). With the application of the PE-supported GPE in lithium ion battery, the battery shows its good rate and initial discharge capacity and cyclic stability. |
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Keywords: | AIBN 2 2-azobisisobutyronitrile AN acrylonitrile DAP diallyl phthalate DEC diethylene carbonate DMC dimethyl carbonate DMF N N-dimethylformamide EC ethylene carbonate FTIR Fourier transform infrared GPE gel polymer electrolyte h hour Li lithium M mole min minute MMA methyl methacrylate P(AN-co-MMA) poly(acrylonitrile-co-methyl methacrylate) PE polyethylene PMMA poly(methyl methacrylate) SEM scanning electron microscope SS stainless steel TGA thermal gravity analysis |
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