Journal article

Publication year: 2013

Pages: 13-19

Journal: Journal of Power Sources

Volume number: 225

ISSN: 0378-7753

DOI Link: https://doi.org/10.1016/j.jpowsour.2012.09.111

Publisher: Elsevier

Abstract: 
Cubic lithium-stuffed garnets of the type Li7La3Zr2O12 have been successfully stabilized by incorporation of gallium. The materials have been prepared by a sal-gel procedure with final calcination at 1085 degrees C for 6 h. Under the applied synthesis conditions, 0.3 mole of gallium ions (per mole of Li7La3Zr2O12) were sufficient to fully stabilize the cubic garnet-type phase. Increasing the fraction of gallium led to significant improvement of sinterability and lithium ion conductivity. Excess gallium ions, in the form of LiGaO2, act as a sintering aid and reside exclusively at the grain boundaries. The gallium-modified garnets showed conductivities up to 5.4 x 10(-4) S cm(-1) at 20 degrees C, and activation energies in the range 0.32-0.37 eV.

Harvard Citation style: El Shinawi, H. and Janek, J. (2013) Stabilization-of cubic lithium-stuffed garnets of the type "Li7La3Zr2O12" by addition of gallium, Journal of Power Sources, 225, pp. 13-19. https://doi.org/10.1016/j.jpowsour.2012.09.111

APA Citation style: El Shinawi, H., & Janek, J. (2013). Stabilization-of cubic lithium-stuffed garnets of the type "Li7La3Zr2O12" by addition of gallium. Journal of Power Sources. 225, 13-19. https://doi.org/10.1016/j.jpowsour.2012.09.111