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Vanadium oxides have shown promising electrochemical properties as rechargeable Li/sup +/ insertion cathodes. The Li/VO/sub x/ systems have a high theoretical specific energy and a high open circuit voltage. In this paper initial results on Li/sup +/ insertion in two types of VO/sub x/ cathodes are presented: V/sub 6/O/sub 13/ composites and V/sub 2/O/sub 5/ xerogels. Both materials can be readily...