Dresden 2011 – wissenschaftliches Programm

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MM: Fachverband Metall- und Materialphysik

MM 31: Postersitzung II

MM 31.13: Poster

Mittwoch, 16. März 2011, 17:15–18:45, P5

Hydrothermal synthesis and physical properties of LiXPO4 (X = Mn, Fe, Co, Ni or mixtures) — •Carsten Jähne^{1, 2}, Christine Täschner², Bernd Büchner², and Rüdiger Klingeler¹ — ¹Kirchhoff Institute for Physics, University of Heidelberg, 69120 Heidelberg — ²Leibniz Institute for Solid State and Materials Research, IFW Dresden, 01171 Dresden

Due to their high open circuit voltages (OCV), materials with phosphor olivine structure are of great interest for application as positive-electrodes in secondary batteries. However, the low electrical conductivity of olivine materials results in a low power capability which demands downscaling of the crystallites in order to enhance surface to volume ratio and/or appropriate post-treatment techniques. Here we report on low temperature conventional and microwave-assisted hydrothermal synthesis of LiXPO4 (X = Mn, Fe, Co, Ni or mixtures of these). In particular, we present electron microscopy, x-ray diffraction and magnetization data on the resulting material which allow to determine the phase, the morphology and the valence of the transition metal ions.