A POROUS VANADIUM PENTOXIDE MATERIAL AND ITS ELECTROCHEMICAL PROPERTIES IN AQUEOUS ELECTROLYTE

A porous vanadium pentoxide (V(2)O(5)) material was prepared through a facile sol-gel route using beta-cyclodextrin (beta-CD) as template reagent. Its crystal structure and morphology were characterized by X-ray diffraction and scanning electron microscopy, respectively. The electrochemical properties of the as-prepared V(2)O(5) in 1.0 mol l(-1) Li(2)SO(4) aqueous electrolyte were investigated by galvanostatic charging/discharging and cyclic voltammetry. The results revealed that the porous V(2)O(5) could deliver the average capacities of 67, 54 and 42mAh g(-1) at the rates of 0.1, 0.5 and 2C, respectively. The cycling performances of the V(2)O(5)/LiMn(2)O(4) cells suggested that the porous V(2)O(5) material could be used as an anode material for aqueous rechargeable lithium-ion batteries.