中国物理B ›› 1996, Vol. 5 ›› Issue (9): 692-699.doi: 10.1088/1004-423X/5/9/007

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A POSSIBLE WAY TO MEASURE LITHIUM ION DIFFUSION COEFFICIENT FOR Li INSERTION THIN FILM WITH UNKNOWN Li COMPOSITION: APPLICATION TO LiαCoO2 and WO3

文世杰1, 陈立泉2   

  1. (1)Energy & Environment Division, Lawrence Berkeley Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA; (2)Institute of Physics, Academia Sinica, Beijing 100080, China
  • 收稿日期:1995-02-20 修回日期:1996-03-09 出版日期:1996-09-20 发布日期:1996-09-20

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   

  1. a Energy & Environment Division, Lawrence Berkeley Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA; b Institute of Physics, Academia Sinica, Beijing 100080, China
  • Received:1995-02-20 Revised:1996-03-09 Online:1996-09-20 Published:1996-09-20

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摘要： 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 LiαCoO2 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.

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.

中图分类号:  (Self-diffusion and ionic conduction in nonmetals)

  • 66.30.H-
68.55.Nq (Composition and phase identification) 82.45.Mp (Thin layers, films, monolayers, membranes) 82.47.Aa (Lithium-ion batteries)