Environmental-friendly polymer electrolyte membrane(M-ABAA)was prepared from emulsion polymerization of butyl acrylate(BA),acrylonitrile(AN)and acrylic acid(AA)with 2-acrylamide-2-methylpropanesulfonic acid(AMPS)as reactive emulsifier via interpenetrating network technology,and characterized by FTIR,XPS,SEM,TEM and TG.The electrochemical performance of CR2032 battery with M-ABAA as electrolyte membrane was evaluated by CV,EIS and charge and discharge tests.The results showed that the M-ABAA(M2)prepared with m(AMPS)∶m(BA)∶m(AA)∶m(AN)of 1∶3∶2∶2 exhibited an ionic conductivity of 0.98 mS/cm,mechanical strength of 7.53 MPa,elongation break of 90.4％,electrolyte uptake of 150％,and thermal shrinkage of 4％.Meanwhile,the M2 showed good compatibility and universality with the current mainstream anode and cathode materials(LiCoO2,LiMn2O4,LiFePO4,NCM811)used in lithium-ion batteries.With M2 as electrolyte separator,lithium metal as anode electrode,LiCoO2 and graphite as cathode electrode,the initial discharge specific capacities were 141.3 and 347.1 mA·h/g,respectively,and the capacity retention rates after 100 cycles were 94.8％and 85.0％,respectively.At 2.0 C rate,the corresponding specific discharge capacities were 119.8 and 239.0 mA·h/g,respectively.
关键词
聚合物电解质膜/互穿网络技术/锂离子电池/有机电化学与工业
Key words
polymer electrolyte membranes/interpenetrating network technology/lithium ion batteries/electro-organic chemistry and industry
维普
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