Novel Fast Lithium Ion Conduction in Garnet-Type Li5La3M2O12 (M = Nb, Ta)

Lithium metal oxides with the nominal composition Li5La3M2O12 (M = Nb, Ta), possessing a garnetlike structure, have been investigated with regard to their electrical properties. These compounds form a new class of solid‐state lithium ion conductors with a different crystal structure compared with al...

Full description

Saved in:
Bibliographic Details
Published in:Journal of the American Ceramic Society 2003-03, Vol.86 (3), p.437-440
Main Authors: Thangadurai, Venkataraman, Kaack, Heiko, Weppner, Werner J. F.
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
conductivity
Diffusion in solids
Exact sciences and technology
garnets
lithium
Physics
Self-diffusion and ionic conduction in nonmetals
Transport properties of condensed matter (nonelectronic)
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Lithium metal oxides with the nominal composition Li5La3M2O12 (M = Nb, Ta), possessing a garnetlike structure, have been investigated with regard to their electrical properties. These compounds form a new class of solid‐state lithium ion conductors with a different crystal structure compared with all those known so far. The materials are prepared by solid‐state reaction and characterized by powder XRD and ac impedance to determine their lithium ionic conductivity. Both the niobium and tantalum members exhibit the same order of magnitude of bulk conductivity (∼10−6 S/cm at 25°C). The activation energies for ionic conductivity (
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1151-2916.2003.tb03318.x