High-Performance Gel Electrolytes Based on Copolymer Gelators with Random Configuration
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초록
내용
Gel polymer electrolytes (e.g. ion gels) are promising future wearable platforms due to their mechanical robustness and high ionic conductivity. In this study, two types of copolymers, poly(ethyl methacrylate-ran-styrene) (PEMA-r-PS) and fully disordered poly(ethyl methacrylate-block-styrene) (PEMA-b-PS), are prepared to investigate the correlation between gel properties and gelator configuration. For fair comparison, each polymer is synthesized to have similar molecular weight (Mn~62 kg mol-1) and the fraction of styrene (~35 mol%). When the random copolymer was employed, the resulting gel indicated 40% higher elastic modulus (~40.1 kPa) at the same fraction of ionic liquids, compared to that of the block copolymer-based gel (~28.6 kPa).