Preparation and electrochemical performance of LiFePO4/C composite with network connections of nano-carbon wires

LiFePO4/C composite with network connections of nano-carbon wires was successfully prepared by using polyvinyl alcohol as carbon source. The composite was characterized by X-ray diffraction and transmission electron microscopic, and its electrochemical performance was investigated by galvanostatic charge and discharge tests. The experimental results show that LiFePO4 grains are tightly connected by the network of nano-carbon wires. Moreover LiFePO4/C composite exhibits high capacity of 168mAhg−1 applied 15mAg−1 current density (C/10), excellent cyclic ability and rate capability. When 1500mAg−1 current density (10C) was applied, the high discharge capacity of 129mAhg−1 has been obtained at room temperature.