Diffusion coefficient measurement of lithium ion in sintered Li1.33Ti1.67O4 by means of neutron radiography

被引：170

作者：

Takai, S

Kamata, M

Fujine, S

Yoneda, K

Kanda, K

Esaka, T ^{[1
]}

机构：

[1] Tottori Univ, Fac Engn, Tottori 6800945, Japan

[2] Tokyo Gakugei Univ, Dept Sci Educ, Koganei, Tokyo 1840015, Japan

[3] Kyoto Univ, Inst Res Reactor, Osaka 5900451, Japan

来源：

SOLID STATE IONICS | 1999年 / 123卷 / 1-4期

关键词：

diffusion coefficient; lithium ion; neutron radiography; solid electrolyte; lithium titanium oxide;

D O I：

10.1016/S0167-2738(99)00095-8

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Neutron radiography (NR) using cold neutron beam was applied to the tracer diffusion coefficient measurement of lithium ion in Li1.33Ti1.67O4. The diffusion couples with different lithium isotope concentrations were annealed at 860 to 900 degrees C and the isotope profiles of lithium ion in the sample were measured by NR. The diffusion profiles obtained for the samples annealed at higher temperatures show good agreement with Fick's law, whereas the diffusion was not carried out well at the interface for the lower-temperature-annealed samples. The values of diffusion coefficients obtained from the profile fitting were a little smaller than those expected from the electric conductivity. The NR method was found to be the most useful method to measure the tracer diffusion coefficient of lithium ion in solids. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：165 / 172

页数：8

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