셀룰로오스를 함유한 자외선 경화형 겔 폴리머 전해질의 전기화학적 특성 연구

Abstract

ABSTRACT Electrochemical properties of cellulose-based UV-cured gel polymer electrolyte

Shin Sang Jin Advisor : Prof. Kim Hyun Kyoung, Ph.D. Dept. of advanced parts and materials & Engineering Graduate School of Chosun University

Novel gel polymer electrolytes (GPE)s containing cellulose acetate (CA) for lithium-ion battery have been developed. The GPEs developed herein are 1) an in-situ UV crosslink system composed of a CA host polymer/Bisphenol A ethoxylate dimethacrylate(BEMA)/polyethylene glycol dimethacrylate(PEGDA) and 2) a microporous gel polymer system based on Poly(vinylidenefluorid-co-hexafluorop- propylene)(PVDF-co-HFP)/CA. Their electrochemical and curing properties, and morphology have been investigated using AC impedance, linear sweep voltammetry, Photo-DSC, and scanning electron microscopy. The gel polymer electrolytes reinforced with CA improved the electrolyte leakage and showed the excellent mechanical properties, the high ionic conductivity, and good overall electro-chemical performance. Therefore these GPEs containing CA could be a promising candidate for lithium-ion battery.