Lithium Diffusion Pathway in Li1.3Al0.3Ti1.7(PO4)(3) (LATP) Superionic Conductor

Monchak, Mykhailo; Hupfer, Thomas; Senyshyn, Anatoliy; Boysen, Hans; Chernyshov, Dmitry; Hansen, Thomas; Schell, Karl G.; Bucharsky, Ethel C.; Hoffmann, Michael J. and Ehrenberg, Helmut (2016): Lithium Diffusion Pathway in Li1.3Al0.3Ti1.7(PO4)(3) (LATP) Superionic Conductor. In: Inorganic Chemistry, Vol. 55, No. 6: pp. 2941-2945

Abstract

The Al-substituted LiTi2(PO4)(3) powders Li1+xAlxTi2-x(PO4)(3) (LATP) were successfully prepared by a water-based sol-gel process with subsequent calcination and sintering. The crystal structure of obtained samples was characterized at different temperatures using high-resolution synchrotron-based X-ray and neutron powder diffraction. Possible lithium diffusion pathways were initially evaluated using the difference bond-valence approach. Experimental 3D lithium diffusion pathway in LATP was extracted from the negative nuclear density maps reconstructed by the maximum entropy method. Evaluation of the energy landscape determining the lithium diffusion process in NASICON-type supertonic conductor is shown for the first time.

• Item Type: Journal article
• Faculties: Geosciences > Department of Earth and Environmental Sciences
• Subjects: 500 Science > 550 Earth sciences and geology
• ISSN: 0020-1669
• Language: English