Patent ID: 7270894

Claim:
A multilayer cathode comprising: (a) a conductive layer, said conductive layer being electrically connected as a bus; (b) a layer comprising at least one source of metal ions of formula M n X m ; and (c) a conductive metal layer comprising at least one conductive metal species, wherein M is an alkali metal ion, an alkaline earth metal ion, a lanthanide metal ion, or a combination thereof; X is an anion selected from the group consisting of hydroxide, sulfide, selenide, telluride, sulfite, bisulfite, sulfate, bisulfate, phosphite, hydrogen phosphite, phosphate, hydrogen phosphate, nitrate, nitrite, perchlorate, perchlorite, BF 4 − , PF 6 − , phosphonate, sulfonate, boronate, carbonate, bicarbonate, and organic carboxylate, and n and m are independently integers from 1 to about 20.