Author/Authors :
S. Maingot، نويسنده , , Ph. Deniard، نويسنده , , N. Baffier، نويسنده , , J. P. Pereira-Ramos، نويسنده , , A. Kahn-Harari، نويسنده , , R. Brec، نويسنده , , P. Willmann، نويسنده ,
Abstract :
A new vanadium iron oxide has been synthesized starting from V2O5 xerogel through an exchange reaction. In its Rietveld-determined structure, (FeO6) apex sharing octahedra link V2O5 ribbons and increase the three-dimensional character of the material. This latter point seems to improve the electrochemical behaviour when compared with V2O5. Especially, in terms of cycle life, a capacity of 210 Ah/kg is maintained after 40 cycles in the potential window of 3.8-2 V instead of 150 Ah/kg for V2O5.
Keywords :
Vanadium oxide , intercalation , Rietveld structure , Iron vanadium oxide
