초록

A molten alkali metal carbonates fuel cell porous anode with a stabilizing agent to maintain porosity and surface area during fuel cell operation. A molten alkali carbonates fuel cell having the above stabilized anode and a method for production of such porous anodes.

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A molten alkali metal carbonates fuel cell porous anode having mean pore diameters of about 2 to 20 microns and surface area about 0.09 to 0.16 square meters per gram having improved surface area stability under carbonate fuel cell operating conditions at about 500°to 700°C. comprising about 0.5 to

A molten alkali metal carbonates fuel cell porous anode having mean pore diameters of about 2 to 20 microns and surface area about 0.09 to 0.16 square meters per gram having improved surface area stability under carbonate fuel cell operating conditions at about 500°to 700°C. comprising about 0.5 to about 20 weight percent, based upon the metal, of a surface area stabilizing agent selected from the group consisting of chromium, zirconium and aluminum in metal, oxide or alkali metal salt forms and mixtures thereof and the remainder being substantially a metal selected from the group consisting of nickel, cobalt and mixtures thereof. In a molten alkali metal carbonates fuel cell of the type having an anode and a cathode with their respective current collectors, an electrolyte tile making contact with said anode and cathode, and a cell housing to physically retain the cell components, said electrolyte tile comprising alkali metal carbonates and an inert support material which upon cell operation at temperatures of about 500°to about 700°C. forms a paste in direct contact with a porous anode, the improvement of said porous anode having mean pore diameters of about 2 to 20 microns and surface area about 0.09 to 0.16 square meters per gram having improved surface area stability under carbonate fuel cell operating conditions comprising about 0.5 to about 20 weight percent, based upon the metal, of a surface area stabilizing agent selected from the group consisting of chromium, zirconium and aluminum in oxide or alkali metal salt forms and mixtures thereof under cell operating conditions and the remainder being substantially a metal selected from the group consisting of nickel, cobalt and mixtures thereof.