Spin Coated V<sub>2</sub>O<sub>5</sub> Xerogel 박막 전극의 임피던스 특성 연구

박희구

Journal of the Korean Industrial and Engineering Chemistry, Vol.10, No.3, 382-387, May, 1999

Export Citation

Spin Coated V₂O₅ Xerogel 박막 전극의 임피던스 특성 연구

Electrochemical Impedance Anaylsis of the Spin Coated V₂O₅ Xerogel

박희구

초록

졸-겔법을 이용하여 무정형의 V₂O₅겔을 제조한 후, 스핀코우팅에 의하여 균일한 박막의 V₂O₅ xerogel 전극을 개발하여 전극의 임피던스 특성을 연구하였다. V₂O₅ 겔이 xerogel로 전환되는 과정에서 스핀코우팅 방법이 V₂O₅의 비등방성을 감소시킬 뿐만 아니라 우수한 전기화학적 특성을 갖게 하였다. V₂O₅ xerogel의 리튬이온 확산계수 및 전하이동저항은 xerogel내에 존재하는 리튬이온의 몰분율이 변함에 따라 증가하였으며 가역성이 우수하였다.

The processes and the kinetics of the lithium intercalation into the spin coated V₂O₂ xerogel prepared by the sol-gel processing have been studied employing impedance analyzer. Homogeneous and quasi-isotropic thin films of the xerogel can be obtained as a result of random distribution of the V₂O₅ gels on the substrate by the use of the spin coating. Effective diffusion coefficient and charge transfer resistance vary more than one order of magnitude at high and low lithium composition in V₂O₅ xerogel, respectively.

Keywords:V₂O₅;Impedance Measurement;Lithium Battery

[References]

Livage J, Chem. Mater., 3, 578 (1991)
Livage J, Gharbi N, Leroy MC, Michaud M, Mater. Res. Bull., 13, 1117 (1978)
Aldebert P, Baffier N, Gharbi N, Livage J, Mater. Res. Bull., 16, 669 (1981)
Passerini S, Chang D, Chu X, Le DB, Smyrl WH, Chem. Mater., 7, 780 (1995)
Park HK, Smyrl WH, Ward MD, J. Electrochem. Soc., 142(4), 1068 (1995)
Araki B, Mailhe C, Baffier N, Livage J, Vedel J, Solid State Ion., 9-10, 439 (1983)
Bailey JK, Nagase T, Pozarnsky GA, Mecartney ML, Mater. Res. Soc. Symp. Proc., 180, 759 (1990)
Bailey JK, Pozarnsky GA, Mecartney ML, J. Mater. Res., 7, 2530 (1992)
Hunter TB, Tyler PS, Smyrl WH, White HS, J. Electrochem. Soc., 134, 2198 (1987)
Ho C, Raistrick ID, Huggins RA, J. Electrochem. Soc., 127, 343 (1980)
Livage L, Mater. Res. Soc. Symp. Proc., 32, 125 (1984)

[Referenced By]

[1] Livage J, Chem. Mater., 3, 578 (1991)

[2] Livage J, Gharbi N, Leroy MC, Michaud M, Mater. Res. Bull., 13, 1117 (1978)

[3] Aldebert P, Baffier N, Gharbi N, Livage J, Mater. Res. Bull., 16, 669 (1981)

[4] Passerini S, Chang D, Chu X, Le DB, Smyrl WH, Chem. Mater., 7, 780 (1995)

[5] Park HK, Smyrl WH, Ward MD, J. Electrochem. Soc., 142(4), 1068 (1995)

[6] Araki B, Mailhe C, Baffier N, Livage J, Vedel J, Solid State Ion., 9-10, 439 (1983)

[7] Bailey JK, Nagase T, Pozarnsky GA, Mecartney ML, Mater. Res. Soc. Symp. Proc., 180, 759 (1990)

[8] Bailey JK, Pozarnsky GA, Mecartney ML, J. Mater. Res., 7, 2530 (1992)

[9] Hunter TB, Tyler PS, Smyrl WH, White HS, J. Electrochem. Soc., 134, 2198 (1987)

[10] Ho C, Raistrick ID, Huggins RA, J. Electrochem. Soc., 127, 343 (1980)

[11] Livage L, Mater. Res. Soc. Symp. Proc., 32, 125 (1984)