Fabrication of Oligo(EDOT)/crosslinked PVA/SiO<sub>2</sub> Composite Based Solid Polymer Electrolyte for All Solid Polymer Battery
발표자
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초록
내용
The characteristics of lithium secondary batteries currently being commercialized do not fully satisfy the requirements for high energy density and safety. In order to meet these requirements, many studies on solid electrolytes have been made. To commercialize a solid electrolyte, it is an important task to compensate for the low ionic conductivity and high interfacial resistance with electrodes compared to organic liquid electrolytes. In this study, oligo(3,4-ethylenedioxythiophene) (oligo(EDOT)) was added to poly(vinyl alcohol) (PVA), a polymer matrix with high ionic conductivity and good adhesion to electrodes due to its sticky properties. And it lowers the interfacial resistance with the polythiophene (PTh)-based electrode. By adding a porous silicon dioxide (SiO2) filler, it increases the lithium salt dissociation ability to increase the ionic conductivity. In addition, the composite electrolyte is supplemented through crosslinking to improve charge/discharge characteristics.