Li/V6O13 리튬 폴리머 전지의 성능

김형선; 조병원; 윤경석; 전해수

Journal of the Korean Industrial and Engineering Chemistry, Vol.7, No.2, 362-370, April, 1996

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Li/V6O13 리튬 폴리머 전지의 성능

The Performance of Li/V₆O₁₃ Lithium Polymer Battery

김형선, 조병원, 윤경석, 전해수

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/V₆O₁₃ 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/cm^{2

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[2] Abraham KM, Goldman JL, Dempsey MD, J. Electrochem. Soc., 128, 2493 (1981)

[3] Steele BCh, Lagos GE, Spurdens PC, Forsythe C, Foord AD, Solid State Ion., 9-10, 391 (1983)

[4] West K, J. Power Sources, 20, 165 (1987)

[5] Kocksbang R, J. Appl. Electrochem., 21, 301 (1991)

[6] Armand MB, Chabagno JM, Duchot M, "Second International Meeting on Solid Electrolyte," 20-22, St Aadrews, Scotland (1978)

[7] Kim HS, Cho BW, Yun KS, Chun HS, This J., Submitted (1995)

[8] Feuillade G, Perche P, J. Appl. Electrochem., 15, 63 (1975)

[9] Watanabe M, Kanbe M, Nagaoka K, Shinohara I, J. Polym. Sci. B: Polym. Phys., 21, 939 (1983)

[10] Abraham KM, Alamgir M, J. Electrochem. Soc., 137, 1657 (1990)

[11] Blomgren GE, "Lithium Batteries," ed. J.P. Gabano, 1, 17, Academic Press, London (1983)

[12] Meitav A, Peled E, J. Electroanal. Chem., 134, 49 (1982)

[13] Ciemiecki KT, Auborn JJ, "Electrochemical Society Proceeding," pv 84-1, 363 (1984)

[14] Kim HS, Cho BW, Yun KS, Chun HS, Korean J. Chem. Eng., submitted (1996)

[15] Tarascon JM, Guyomard D, Solid State Ion., 69(3-4), 293 (1994)

[16] Bruce PG, Krok F, Electrochim. Acta, 33, 1669 (1988)

[17] Narayanan SR, J. Electrochem. Soc., 140, 1854 (1993)

[18] Nagasubramanian G, Attia AI, Halpert G, J. Appl. Electrochem., 24(4), 298 (1994)

[19] West K, J. Power Sources, 14, 235 (1985)

[20] Jacobsen T, West K, Zachan-Christiansen B, Atlung S, Electrochim. Acta, 30, 1205 (1985)

[21] Macklin WJ, Neat RJ, Sandhu SS, Electrochim. Acta, 37, 1715 (1992)