Fluorine-Containing Siloxane Based Polymer Electrolyte Membranes

Abstract

The hydrosilylation reaction of 2,4,6,8tetrahydro-2,4,6,8-tetramethylcyclotetrasiloxane (D 4 H) with 2,2,3,3-tetrafluoropropyl acrylate and vinyltriethoxysilane in the presence of platinum catalysts (platinum hydrochloric acid, Karstedt's catalysts and Pt/C (10%) at 323 K) has been carried out and corresponding addition adduct (D 4 R,R') has been obtained. The synthesized product D 4 R,R was analyzed by FT-IR, 1 H, 13 C, and 29 Si NMR spectroscopy. Sol-gel reactions of D 4 R,R doped with lithium trifluoromethylsulfonate (triflate) have been studied and solid polymer electrolyte membranes have been obtained. Electric conductivity of solid polymer electrolyte membranes has been determined via electrical impedance spectroscopy.