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 V2O5. (Mo0.3V0.7)2O5 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/cm2 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/cm2, a substantial amount of this capacity may still be drawn. Low particle size (< 10 micron) and high diffusion coefficients over the whole discharge range (>10-9 cm2/s) provide the basis for this rate capability. A comparison with the parent oxide, V2O5, shows that a higher energy density is obtainable with (Mo0.3V0.7)2O5.
(Mo0.3V0.7)2O5 as a solid solution cathode for Li cells. Part. I°. Electrochemical behaviour of primary cells / P., Fiordiponti; Pasquali, Mauro; G., Pistoia; F., Rodante. - In: JOURNAL OF POWER SOURCES. - ISSN 0378-7753. - STAMPA. - 7:2(1981), pp. 133-143.
(Mo0.3V0.7)2O5 as a solid solution cathode for Li cells. Part. I°. Electrochemical behaviour of primary cells.
PASQUALI, Mauro;
1981
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 V2O5. (Mo0.3V0.7)2O5 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/cm2 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/cm2, a substantial amount of this capacity may still be drawn. Low particle size (< 10 micron) and high diffusion coefficients over the whole discharge range (>10-9 cm2/s) provide the basis for this rate capability. A comparison with the parent oxide, V2O5, shows that a higher energy density is obtainable with (Mo0.3V0.7)2O5.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
