Nano-graphite platelet loaded with LiFePO₄ nanoparticles used as the cathode in a high performance Li-ion battery

LiFePO₄ nanoparticles were grown on nano-graphite platelet (NGP) using a simple chemical route. The material was used as the cathode in Li-ion rechargeable batteries and exhibited excellent cyclability and rate capability because of the easy electron transport in it. The electrochemical stability of the electrode was improved by the two-dimensional conductive network of the NGP. The resulting electrodes delivered a specific capacity of about 150 mA h g^-1 at a current rate of 135 mA g^-1 (∼0.8 C) after 100 cycles with no capacity fade. At elevated current rates, the electrodes exhibited capacities of more than 100 mA h g^-1 at a current density of 2000 mA g^-1 (∼12 C) without further incorporation of conductivity agents or coatings.