Porous V2O5/Carbon Nano-composites Electrodes for Rechargeable Power Sources with Large Capacity and High Power

摘要

Nanoporous composite electrodes for rechargeable power sources were successfully fabricated by coating porous carbon with thin V2O5 gel layers. Their electrochemical properties were demonstrated, which took after both lithium ion batteries and electrochemical double layer capacitors. The nanoporous V2O5/carbon composites exhibited large capacity of more than 100 mAh (g-composite).1 and good rate capability of 80% at 5.0 A (g-composite).1. The good performance is explained by electric double layer capacitance of large surface area and high rate lithium insertion to thin V2O5 gel layers.