Mo0.3V0.7)2O5 as a solid solution cathode for Li cells. Part I. Electrochemical behaviour of primary cells

Abstract A new cathode material for Li cells has been prepared by using the Mo-rich limit of a range of solid solutions obtained by Mo substitution for V in V 2 O 5 . (Mo 0.3 V 0.7 ) 2 O 5 proves to possess two of the key requirements for cathodes to be used in Li cells, i.e. , high specific capacity and rate capability. At 1.0 mA/cm 2 and to 1.8 V cut-off it may incorporate 2.3 Li + /mole, thus giving capacities of ∼ 0.3 A h/g. At current drains higher than 5 mA/cm 2 , a substantial amount of this capacity may still be drawn. Low particle size ( 10 −9 cm 2 /s) provide the basis for this rate capability. A comparison with the parent oxide, V 2 O 5 , shows that a higher energy density is obtainable with (Mo 0.3 V 0.7 ) 2 O 5 .