Abstract: Olivine structure LiFePO_4 as a promising cathode material attracted much attention because of its advantage, such as rich source of cheap raw materials, non-toxic, high theoretical capacity, thermal stability and good cycling performance. Therefore LiFePO_4 is the preferred material of the next generation of lithium-ion battery. Here olivine-type structure and electrochemical performance of LiFePO_4 are presented briefly, while the preparation and modification aimed at the low electronic conductivity are described in detail.

Key words: lithium iron phosphate;structure;performance;preparation;modification