[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.5229/JKES.2002.5.3.106

Characteristics of Lithium Metal Secondary Battery Using PAN Gel-electrolyte Mixed with TiO₂ Ceramic Filler

Lim, Hyo-Sung (Dept. of Chemical Eng., Yonsei University)
Kim, Hyung-Sun (Eco & Nano Research Center, Korea Institute of Science and Technology)
Cho, Byung-Won (Eco & Nano Research Center, Korea Institute of Science and Technology)
Lee, Tae-Hee (Dept. of Chemical Eng., Yonsei University)

Publication Information

Journal of the Korean Electrochemical Society / v.5, no.3, 2002 , pp. 106-110 More about this Journal

Abstract

Gel-type polyacrylonitrile(PAN) polymer electrolytes have been prepared using ethylene carbonate(EC), propylene carbonate(PC) and dimethyl carbonate(DMC) plasticizer, $LiPF_6$ salt and $TiO_2$ ceramic filler. Electrochemical properties, such as electrochemical stability, ionic conductivity and compatibility with lithium metal and mechanical properly of polymer electrolytes were investigated. Charge/discharge performance of lithium secondary battery using these polymer electrolytes were investigated. The maximum load that the polymer electrolyte resists increased about two times as a result of adding $TiO_2$ in the polymer electrolyte containing EC and PC. Polymer electrolyte containing EC, PC and $TiO_2$ also showed ionic conductivity of $2\times10^{-3} S/cm$ at room temperature and electrochemical stability window up to 와 4.5V. Polymer electrolyte containing EC, PC, and $TiO_2$ showed the most stable interfacial resistance of $130\Omega$ during 20 days in the impedance spectra of the cells which were constructed by lithium metals as electrodes. Lithium metal secondary battery which employed $LiCoO_2$ cathode, lithium metal anode and $TiO_2$ -dispersed polymer electrolyte showed $90\%$ of charge/discharge efficiency at the 1C rate of discharge.

Keywords

Gel polymer electyrolye; Li metal battery; filler;

Citations & Related Records

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KSCI

Characteristics of Lithium Metal Secondary Battery Using PAN Gel-electrolyte Mixed with TiO2 Ceramic Filler TiO2 Ceramic Filler가 혼합된 젤상의 PAN 고분자 전해질을 이용한 리튬금속 이차전지의 특성

Characteristics of Lithium Metal Secondary Battery Using PAN Gel-electrolyte Mixed with TiO₂ Ceramic Filler