Porous Li3V2(PO4)3/C cathode with extremely high-rate capacity prepared by a sot-gel-combustion method for fast charging and discharging

Porous Li3V2(PO4)(3)/C (LVP/C) cathode materials have been synthesized via a sol-gel-combustion method. The porous LVP/C shows stable and extremely high rate capacity, owing to the special porous structure and the nano-sized particle. In the potential range of 3.0-4.3 V. discharge capacities of 122, 114, 108 and 88 mAh g(-1) can be delivered at high rates of 10, 20, 40 and 60 C after 100 cycles, respectively. In the potential range of 3.0-4.8 V. the corresponding discharge capacities are 145, 129, 122. 114 and 103 mAh g(-1) after 500 cycles at 10, 20, 40, 60 and 100 C, which is the highest level for LVP so far. (C) 2011 Elsevier B.V. All rights reserved.