Researchers of the Institute of Technical Sciences of SASA developed a new method for the synthesis of LiFePO4/C composite. Due to its excellent electrochemical properties, non-toxicity and thermal stability on higher temperatures, this composite has been the most promising cathode material for lithium-ion batteries. It has various applications not only in fuel cells for small electronic devices but also in electric and hybrid vehicles.
The developed synthesis procedure is simple, inexpensive and ecologically safe. The procedure, which does not necessitate expensive or specialized equipment, is based on the precipitation of an Fe(II) precursor in molten stearic acid and an additional thermal treatment of the precipitate. The obtained powders exhibit excellent electrochemical properties, reaching 94% of the theoretical capacity for this material. A patent application describing the synthesis procedure of LiFePO4/C has been submitted to the Republic of Serbia Intellectual Property Office a few days ago (Preparation of composite of lithium iron phosphate (LiFePO4) and carbon by precipitation method in molten stearic acid, P 2010/0488). The new method will also be presented in an article (Preparation of LiFePO4/C composites by co-precipitation in molten stearic acid, authored by Dragana Jugović, Miodrag Mitrić, Maja Jović, Nikola Cvjetićanin, Srečo Škapin, Božidar Cekić, Valentin Ivanovski and Dragan Uskoković) submitted to Journal of Power Sources. The research team engaged in the characterization of the obtained powder also included researchers from the Faculty of Physical Chemistry, University of Belgrade and Vinča Institute of Nuclear Science, whereas high-resolution characterization of the material was carried out at the Jožef Štefan Institute in Ljubljana.
These results will be first presented at the 2010 Seoul Science & Technology Forum, held in Seoul, Korea, on November 18-20, 2010. The Forum will feature lectures on key issues of sustainable development given by about 50 leaders of distinguished research institutes around the world. At the 2010 Seoul Science & Technology Forum, Professor Dragan Uskoković, Director of the Institute of Technical Sciences of SASA will give the lecture titled International Cooperation in Advanced Materials and Green Technologies – from a Serbian Perspective.