화학공학소재연구정보센터
학회 한국고분자학회
학술대회 2019년 가을 (10/09 ~ 10/11, 제주컨벤션센터)
권호 44권 2호
발표분야 대학원생 구두발표 (발표15분)
제목 Star-Shaped Block Copolymers: Effective Polymer Gelators of High-Performance Gel Electrolytes for Electrochemical Devices
초록 Ion gels composed of ABA triblock copolymers and ionic liquids have attracted great interest as polymer gel electrolytes for various electrochemical applications. Here, we present highly robust ion gels based on a six-arm star-shaped block copolymer of (poly(methyl methacrylate)-b-polystyrene)6 ((MS)6). Compared to typical ion gels based on linear PS-b-PMMA-b-PS (SMS), the (MS)6-based gels show mechanical moduli of more than twice under various strains. In addition, the outstanding mechanical property was maintained even up to 180 °C without a gel-sol transition. We investigated the feasibility of the (MS)6-based ion gels in flexible ECL devices. The flexible ECL devices based on (MS)6 gels exhibited high durability against bending deformation compared to devices with the gels based on linear SMS. This result implies that the star-shape of copolymers is effective molecular geometry for achieving highly conductive polymer gel electrolytes with great mechanical robustness.
저자 황희동, 김진곤
소속 포항공과대
키워드 block copolymers; polymer gel electrolytes; ion gels; electrochemical displays; flexible electronics
E-Mail