Preparation Conditions of Nickel Particle Supported on Lithium Iron Phosphate for Its Carbon Modification Treatment

The preparation process of metallic Ni(0) particles supported on LiFePO4 was analyzed using the in-situ XAFS technique in order to produce the carbon nanotube on LiFePO4 by methane decomposition reaction catalyzed by metallic Ni(0) for its utilization as an active material of a lithium ion battery. The Ni species was supported on LiFePO4 by the impregnation method. The LiFePO4 was oxidized to FePO4 during the calcination process. The in-situ XAFS analysis for the reduction process revealed that LiFePO4 was regenerated at the temperature range between 380 °C and 490 °C. In this reduction process, the supported Ni species was changed from NiO to metallic Ni(0). This study achieved to find out the appropriate preparation conditions of the metallic Ni(0) particle on LiFePO4.