화학공학소재연구정보센터
Journal of the Korean Industrial and Engineering Chemistry, Vol.7, No.2, 362-370, April, 1996
Li/V6O13 리튬 폴리머 전지의 성능
The Performance of Li/V6O13 Lithium Polymer Battery
초록
Li/V6O13 전지의 성능과 poly(acrylonitrile)[PAN]계 폴리머 전해질의 전기화학적인 성질을 조사 하였다. 폴리머 전해질의 이온 전도도는 상온에서 2.3×10-3S/cm를 보였으며 리튬 전극과의 상용성도 우수하였다. 또한 4.3V(vs.Li/Li)까지의 전기화학적인 안정성이 있는 것으로 나타났다. Li/V6O13 전지 반응은 V6O13 전극과 폴리머 전해질간의 계면 저항이 지배적 이었다. V6O13내의 리튬 이온의 확산 계수값은 2.7×10-9∼4.2×10-8cm2/sec로 나타났다. V6O13 활물질의 이용률은 C/8(50μA/cm2)에서 95% 였으며 C/8(50μA/cm2)에서는 82%로 각각 나타났다.
The performance of The performance of Li/V6O13 cell and the electrochemical properties of polymer electrolyte based on poly(acrylonitrile) [PAN] was investigated. The ionic conductivity of polymer electrolyte showed 2.3×10-3S/cm and the compatibility with lithium electrode was excellent. Also, it showed the electrochemical stability up to 4.3V( vs. Li/Li). The cell reaction of Li/V6O13 was dominated by the interfacial resistance between Li/V6O13 electrode and polymer electrolyte. The diffusion coefficient of lithium ion within Li/V6O 13 was 2.7×10-9∼4.2×10-8cm2/sec. The utilization of Li/V6O13 active material was 95% at C/8(50μA/cm2) and 82% at C/4(100μA/cm2
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