A POSSIBLE WAY TO MEASURE LITHIUM ION DIFFUSION COEFFICIENT FOR Li INSERTION THIN FILM WITH UNKNOWN Li COMPOSITION: APPLICATION TO Li$\alpha$CoO2 and WO3
WEN SHI-JIE (文世杰)a, CHEN LI-QUAN (陈立泉)b
a Energy & Environment Division, Lawrence Berkeley Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA; b Institute of Physics, Academia Sinica, Beijing 100080, China
Abstract In this paper, a new experimental method of lithium ion diffusion coefficient measurement for lithium intercalation thin film material is presented. This exper-imental method is feasible and can be applied to thin films with unknown lithium composition such as Li$\alpha$CoO2 etc. To check its validity, we used the impedance spec-troscopy method to make a verification on the WO3 thin film sample with known lithium composition.
Received: 20 February 1995
Revised: 09 March 1996
Accepted manuscript online:
PACS:
66.30.H-
(Self-diffusion and ionic conduction in nonmetals)
WEN SHI-JIE (文世杰), CHEN LI-QUAN (陈立泉) A POSSIBLE WAY TO MEASURE LITHIUM ION DIFFUSION COEFFICIENT FOR Li INSERTION THIN FILM WITH UNKNOWN Li COMPOSITION: APPLICATION TO Li$\alpha$CoO2 and WO3 1996 Acta Physica Sinica (Overseas Edition) 5 692
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