Facile Synthesis for LiFePO4 Nanospheres in Tridimensional Porous Carbon Framework for Lithium Ion Batteries

The excellent electronic conductivity and high surface area are two crucial factors for electrode materials to achieve high energy and power capabilities in lithium ion batteries. This article presents a feasible method to obtain nanospherical electrode materials in the versatile carbon framework. A facile synthesis has been developed to prepare LiFePO4 nanospheres with an average diameter of similar to 300 nm lodged in the tridimensional (3D) porous carbon structure. This LiFePO4/C composite possesses the considerably enhanced electronic conductivity of similar to 10(-2) Scm(-1) and amazing high surface area of 200.5 m(2)g(-1), and the lithium ion diffusion coefficient of similar to 10(-15)-10(-14) cm(2)s(-1) is calculated. The LiFePO4/C cathode material delivers discharge capacities of 155.0 mAhg(-1) at 0.1 C and 69.5 mAhg(-1) at 20 C. Furthermore, the pristine LiFePO4/C entity has exhibited discharge capacity of 127.8 mAhg(-1) at 0.1 C without conductive carbon additives.