THIN-FILM RECHARGEABLE LITHIUM BATTERIES

Thin-film rechargeable batteries with st lithium metal anode, an amorp hous inorganic electrolyte, and cathodes of amorphous V2O5 and crystal line and amorphous LixMn2O4 have been fabricated and characterized. Th e performance of the thin-film cells was evaluated at different curren t densities and, in the case of Li-V2O5, at several temperatures. Elec trical measurements show that the current density of the thin-film cel ls is limited by the lithium-ion mobility in the cathodes. The resista nce of Li-LixMn2O4 cells with crystalline cathodes is about two orders of magnitude lower than that of Li-V2O5 cells with amorphous cathodes .