Synthesis & Characterization of LiFe1-XNiXPO4/C (0 ≤ X ≤ 1)

Abstract

The major contribution to the battery performance is due to the cathode material. The present work attributes to finding a novel cathode material which would have high cell voltage, high life cycle, high specific energy, safety and economical. Ge et al. found that when LiFePO4/C was doped with Nickel, the cycle life was enhanced from nearly 2000 (commercially available Lib) to around 5500-7200. This was a remarkable achievement. The composition of the nickel doped LiFePO4 was not revealed. Moreover LiNiPO4 has been found to have a very high cell voltage of 5.1 Volt. It was strongly felt that for a suitable doping percentage of Nickel in LiFe1-XNiXPO4 (0≤X≤1), we can get a composition having very high cell voltage and high life cycle. LiFePO4 & LiNiPO4 were successfully synthesized but LiFe1- XNiXPO4 (X= 0.125, 0.250, 0.375) were tried but no phase was formed.