Gel polymer electrolytes using UV curing for flexible, high performance energy storages with enhanced interfacial properties of electrodes-electrolyte.
발표자
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초록
내용
The improvement of interfacial properties of electrodes and electrolyte is of paramount importance in high performance energy storages. Herein we synthesize gel polymer electrolytes (GPEs) consisting of trimethylolpropane ethoxylate triacrylate (ETPTA) and poly(ethylene glycol) methyl ether methacrylate (PEGMA) with a lithium salt solution (1M LiPF6 EC/DMC 1:1 (v/v)) by UV curing. Ionic conductivities and mechanical properties of GPEs are investigated by changing the ratio of PEGMA and ETPTA as well as the amount of the lithium salt solution over GPE content. GPEs having a high ionic conductivity (10-3 S/cm) is impregnated into electrode layer, enhancing electrolyte-accessible surface area of electrodes. The GPE with good mechanical stability and small ionic conductivity (~10-4 S/cm) is sandwiched between electrodes facing each other, leading to the realization of flexible device.