Ion transport in topological all‐solid‐state polymer electrolyte improved via graphene‐oxide

Abstract

AbstractDesigning and constructing novel topological all‐solid‐state polymer electrolyte (SPE) matrices can improve the ionic conducting ability of the prepared SPEs compared with the linear ones. Here, we construct a novel topological polymer electrolyte matrix using triphenylene as core and block poly(methyl methacrylate)‐poly(poly[ethylene glycol] methyl ether methacrylate) as arm. Specifically, the arm is attached onto the core via sequential atom transfer radical polymerization. The molecular weight of the polymers is well controlled via adjusting the inventory rating of monomers, the optimal SPE obtained via solution casting has an ambient temperature ionic conductivity of 3.69 × 10−5 S cm−1, which is higher than typical linear poly(ethylene oxide)‐based SPE (usually 10−6–10−8 S cm−1). The electrochemical performance is further improved through adding given contents of graphene‐oxide into the SPE. Thus, we believe, through molecular designing and the widely used composite tactics, new class of electrolytes with high‐electrochemical performance for all‐solid‐state Li‐ion batteries can be developed.