Infiltrating Gel Polymer Electrolytes into the Electrodes for Improving Electrode-Electrolyte Interface
발표자
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초록
내용
Gel polymer electrolytes (GPEs) can provide exceptional performance and avoid safety problem like the leakage of liquid electrolyte commonly occurred in rechargeable battery system. So they are attracting great potential power for battery system. Here we synthesize GPEs which are composed of trimethylolpropane ethoxylate triacrylate (ETPTA), poly(ethylene glycol) methyl ether methacrylate (PEGMA), and lithium salt solution by UV-light irradiation. It is easy to tune the mechanical property as well as ionic conductivity by changing the composition of ETPTA, PEGMA and lithium salt solution in the GPEs. The infilling of GPEs with the property of high ionic conductivity (~10-3 S/cm) into the electrode is performed and it improves the interface characteristics at which the electrode and electrolyte. GPEs, which have the properties of good mechanical strength and relatively small ionic conductivity (~10-4 S/cm), are used as a flexible film on the electrodes.