Self-healable Polyurethane-based gel polymer electrolyte for energy storage device
발표자
()
초록
내용
Flexibility, robustness, transparency, and recyclability are critical factors in the application of self-healing polymer materials to flexible electronics. However, integrating all of the above properties remains a significant challenge. In this work, we report a strategy for the facile preparation of polyurethane (PU) elastomers with ultra-high strength and self-healing properties based on hydrogen bonding, disulfide dynamics chemistry, and microphase separation simultaneously. The PU elastomers were created utilizing polytetrahydrofuran (PTMEG), isophorone diisocyanate (IPDI), and cystamine as a polyol, hard segment, and amino-terminated chain extender. PTMEG polyols typically provide flexible chain segments, which can dissolve lithium salts and transport Li+. IPDI generally contains a cyclic structure, which can improve the rigidity of PUs. To form a highly ionic conductive solid-state electrolyte membrane, self-healable PU is complexed with two types of Li salts (LiTFSI and LiClO4).