Electrochemical Performance Of LiFe_((1-x))Mn_xPO_4 (x= 0, 0.10, 0.15, 0.2) Synthesized By Solid State Process As Cathode Material For Li-ion Battery

摘要

Mn-doped LiFePO_4 was synthesized through solid state process. Starting materials as LiOH._2H_2O, Fe_2O_3, MnO_2, H_3PO_4 and citric acid were technical grade materials. Synthesis process was conducted in two step heating process. The first heating process was purposed to remove organic materials at temperature of 320 °C for 10 hours in inert atmosphere. Subsequently, the second heating process was conducted at 800 °C for 8 hours also in inert atmosphere. Obtained phase was further observed by means of XRD. Morphology of the obtained powder was analyzed by SEM. The electrochemical performance was observed by cyclic voltammetry with the potential range 2 - 4.2 V under the scan rate 0.1 mV/s. The rate capability of the obtained material was determined by charge-discharge test under various C-rates (0.5-10C) for potential range of 2 - 4.2 V.