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김현수,김성일,최관영,문성인,윤문수,김상필,Kim, Hyun-Soo,Kim, Sung-Il,Choi, Gwan-Young,Moon, Seong-In,Yun, Mun-Soo,Kim, Sang-Pil The Korean Electrochemical Society 2003 한국전기화학회지 Vol.6 No.2
Urethane acrylate oligomer was synthesized and used in a gel polymer electrolyte (GPE) and then its electrochemical performances were evaluated. $LiCoO_2/GPE/graphite$ cells were prepared and their performances depending on discharge currents and temperatures were evaluated. The precursor containing $5 vol\%$ curable mixture had a low viscosity relatively. ionic conductivity of the gel polymer electrolyte at room temperature and $-20^{\circ}C$ was ca. $5.9\times10^{-3}S{\cdot}cm^{-1}\;and\;1.4times10^{-3}S{\cdot}cm^{-1}$, respectively. GPE showed good electrochemical stability up to potential of 4.5V vs. RLi/Li^+.\;LiCoO_2/GPE/graphite$ cell showed a good high-rate and low-temperature performance.