Structure and properties of layered manganese-vanadium oxide as a cathode material for lithium secondary batteries

MnxV2O5 (.) nHO containing double sheets of V2O5 layers has been synthesized by a new method - oxidation Of VOSO4 with layered MnO2. The MnN molar ratio is 0.068, and XPS indicates that the oxidation state of vanadium is +5 and that of manganese is +4. MnxV2O5 (.) nH(2)O has relatively promising lithium insertion properties, with a specific capacity of 200 mA h g(-1) between 2.0 and 4.0 V, with the discharge capacity at the 18th cycle remaining as high as 208.3 mA h g(-1). MnxV2O5 (.) nH(2)O is therefore a potential practical candidate as the cathode material for rechargeable lithium batteries. (C) 2004 Elsevier B.V. All rights reserved.