Characterization of Nanocathode Material for Rechargeable Lithium Ion Battery
Li ion batteries are one of the most commercialized solutions to store electrochemical energy, but until now their broad use is limited to small electronic devices. During the past few years, much attention was focused on cathode materials with either high voltage or high capacity coupled with high stability. In the present work, we focused on the synthesis and characterization of LiNiPO4 and lanthanum doped LiNiPO4 prepared by Pechinitype precursor method. The X ray diffraction analysis confirms the formation of compounds LiNiPO4 and lanthanumdoped LiNiPO4 with orthorhombic structure. The Fourier transform infra red analysis has been made to confirm the formation of Li1 yLayNiPO4 (y 0.05, 0.07, 0.09 mol% From AC impedance analysis, it is found that the undoped LiNiPO4 has ionic conductivity of 8.13x10 S cm and the La doped sample (Li0.93La0.07NiPO4) has maximum conductivity of 3.83x10 S cm at ambient temperature. This value is one order greater than that of the undoped LiNiPO4. Keywords Cathode Material; Lanthanum; Lithium Ion Battery; Nickel Phosphate; Rare Earths