Patent ID: 7468224

Claim:
A battery comprising: a molten salt electrolyte that exhibits a liquid state in at least part of a temperature range between 10 and 40 degrees C.; and a positive electrode having a mixture of an active material and an electron conducting material, said mixture being supported on an electrically conducting member; wherein said electron conducting material is in particulate form and has at least on a surface thereof a separate barrier layer substantially constituted from at least one material selected from the group consisting of: (a) oxides having at least one element which belongs to group 2 to 14 in the third or subsequent period of the periodic table as a constituent element thereof; (b) nitrides having at least one element which belongs to group 2 to 14 in the third or subsequent period of the periodic table as a constituent element thereof; and (c) tungsten, wherein the barrier layer decreases an oxidative decomposition of the electrolyte.