Preparation of LiFePO_4 as a cathode material for lithium ion batteries by a citric acid complex method

摘要

LiFePO_4 powders were prepared by a citric acid complex method. The effects of source composition and firing conditions on the formation of LiFePO_4 were investigated. Single phase and well-crystallized LiFePO_4 powders were obtained at 500℃ for 5h. The particle size of the obtained powder is smaller than that of powder prepared by the conventional solid-state reaction method.