Preparation and performance of Nano-LiFePO4/C cathode material for lithium-ion battery

Abstract

A high energy density LiFePO₄/C material for lithium batteries was synthesized by controlled crystallization-carbothermal reaction, which has been experienced as an effective process for mass production of electrode materials. The structure and morphology of the LiFePO₄/C material were characterized by X-ray diffraction and Scanning Electron Microscope (SEM). The electrochemical properties of the synthesized nano-LiFePO₄/C were investigated by charge-discharge processing and cyclic voltammetry (CV). The initial discharge capacities of the LiFePO₄/C battery were 163.9, 158.4, 154.5, 151.4, and 142 mA h g^–1 at 0.1C, 1C, 2C, 5C, and 10C, respectively. The capacity of LiFePO₄/C material maintained 98.5% at the rate of 1C after 100 cycles, demonstrating excellent rate capability and cycling performance.