Influence of tetraglyme towards magnesium salt dissociation in solid polymer electrolyte for electric double layer capacitor

摘要: Most of commercialized electrical double layer capacitors (EDLCs) with liquid electrolyte are bulky, non-flexible and unsafe which require solid polymer (SPE) as the replacement. Herein, SPE containing tetraglyme ionic conductivity booster was prepared in polyvinyl alcohol (PVA), magnesium trifluoromethane sulfonate (Mg (Tf)2) (TEDGME) have been utilized host polymer, salt additive, respectively. After addition TEDGME, exhibited a significant boost from 1.43 × 10−9 to 3.10 × 10−5 S cm−1. This is attributed presence multiple ether oxygen atom functional group TEDGME that provides more charge carriers. Fourier transform infrared spectroscopy authenticates formation complex within systems indicates good interaction between salts. X-ray diffraction analysis demonstrates reduction crystallinity after beneficial for ion diffusion. The maximum specific capacitance achieved by EDLC employing incorporated 6.34 F/g at 0.04 A/g, rate capability 74.1%.