PREPARATION AND ELECTROCHEMICAL PROPERTIES OF GEL-TYPE POLYMER ELECTROLYTE BASED ON MODIFIED NBR BY USING Ll~+ AND MG~(2+)

摘要

In our study, Ion-polymer interaction in gel-type polymer electrolyte (GPE) according to two kinds of ions was investigated. GPE systems were composed of Mg or Li salt, organic solvent (γ-BL), and polymer matrix prepared by chemical cross-linking of NBR with poly(ethylene glycol)methylethermethacrylate(PEGMEM) having polar group (-CH_2-CH_2-O-) in side chain of monomer. The highest ionic conductivity was 3.3 X 10~(-2)Scm~(-1) for Mg~(2+)-GPE with 200wt% liquid electrolyte contents at 20°C. The interaction between ionic species and polymer matrix in GPE was investigated by using fourier transform infrared spectroscopy (FT-IR). Also, electrochemical property of Mg~(2+)-GPE was investigated by using cyclic voltammetry.