Synthesis of Crystalline LiCoPO4 by a Solvo-thermal Method

LiCoPO4 is a candidate for application as cathode in next-generation Li-ion cells as for its high working potential of 4.8V. Here we report the synthesis of highly crystallized LiCoPO4 by solvo-thermal method at low temperature (200℃) and subsequent sintering. The effects of solvents and sintering temperatures on the preparation of LiCoPO4 have been investigated. As-prepared powders have been characterized by X-ray diffraction and Scan electronic microscopy. As a result, the presented synthetic route leads to well crystallized and morphologically homogeneous particles which include cube, rod-like and other morphologies. Such crystalline LiCoPO4 with various features may be applied as cathode material in Li-ion batteries.