EDLC with UV-cured composite polymer electrolyte based on poly[(ethylene glycol) diacrylate]/poly(vinylidene fluoride)/poly(methyl methacrylate) blends

Abstract

UV-cured poly[(ethylene glycol) diacrylate]-poly(vinylidene fluoride)-poly(methyl methacrylate) composite polymer blends containing 1.0 M of lithium hexafluoro phosphate (LiPF6) as liquid components were employed as a gel-type composite polymer electrolyte cast onto nonwoven fabric supports for an electric double layer capacitor (EDLC). The electrodes were prepared by dip-coating method using activated carbon powder with a high specific surface area of 1908 m(2)g(-1) for EDLC. The EDLC composed of the activated carbon electrode, the UV-cured PEGDA/PVdF/PMMA blend film cast onto nonwoven fabric supports and the activated carbon electrode showed good mechanical strength and predominant electrochemical performances. (C) 2004 The Electrochemical Society.