Abstract: In one embodiment, the present invention relates to a third electrode for use in a metal-air tricell comprising a support structure coated with a layer of a lanthanum nickel compound and at least one metal mixture, wherein the mixture is adhered to the support structure without the use of an adhesive. In another embodiment, the present invention relates to a metal-air tricell comprising: an air electrode; a metal electrode; and a third electrode, wherein the third electrode comprises a support structure coated with a mixture of a lanthanum nickel compound and at least one metal, wherein the mixture is adhered to the support structure without the use of an adhesive.