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Title: Li-ion diffusion in highly (0 0 3) oriented LiCoO2 thin film cathode prepared by pulsed laser deposition
Authors: Tang, S.B. 
Lai, M.O. 
Lu, L. 
Keywords: Diffusion coefficient
LiCoO2 thin film
Pulsed laser deposition
Issue Date: 31-Jan-2008
Citation: Tang, S.B., Lai, M.O., Lu, L. (2008-01-31). Li-ion diffusion in highly (0 0 3) oriented LiCoO2 thin film cathode prepared by pulsed laser deposition. Journal of Alloys and Compounds 449 (1-2) : 300-303. ScholarBank@NUS Repository.
Abstract: A pure, well crystallized and highly (0 0 3) oriented LiCoO2 thin film was deposited on stainless steel substrates by pulsed laser deposition. The overall diffusion coefficients of lithium-ion in the potential range between 3.85 and 4.2 V were measured by three different electrochemical methods namely, cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and potentiostatic intermittent titration technique (PITT). From CV, the apparent chemical diffusion coefficient of lithium-ion was estimated to be 2 × 10-13 cm2/s. EIS revealed that the charge-transfer resistance obviously decreased above 3.90 V and changed little up to 4.22 V. The diffusion coefficients obtained from EIS were in the order of 10-12 cm2/s while they were in the range of 6 × 10-13 and 8 × 10-12 cm2/s from PITT, depending on the potentials. © 2006 Elsevier B.V. All rights reserved.
Source Title: Journal of Alloys and Compounds
ISSN: 09258388
DOI: 10.1016/j.jallcom.2005.12.131
Appears in Collections:Staff Publications

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