Abstract: An improved cathode with a conductive metal core and a Raney-type catalytic surface predominantly derived from an adherent ternary aluminide intermetallic crystalline precursory outer portion of the metal core is disclosed. The precursory outer portion preferably has molybdenum and titanium added to give a precursor alloy having the formula Ni.sub.x Mo.sub.y Ti.sub.z Al.sub.3 where x is within the range of from about 74 to about 94 weight percent, y is within the range of from about 5 to about 20 weight percent and z is within the range of from about 1 to about 5 weight percent of the Ni-Mo-Ti portion of the alloy. Also disclosed is a method of producing a low overvoltage cathode. The method includes the steps of taking a Ni-Mo-Ti core or substrate having about 5-20 weight percentage of Mo and about 1-5 weight percent Ti and coating it with aluminum then heat treating to form a Ni-Mo-Ti-Al ternary alloy with mostly NiAl.sub.

Abstract: An improved cathode with a conductive metal core and a Raney-type catalytic surface predominantly derived from an adherent ternary aluminide intermetallic crystalline precursory outer portion of the metal core is disclosed. The precursory outer portion preferably has molybdenum and titanium added to give a precursor alloy having the formula Ni.sub.x Mo.sub.y Ti.sub.z Al.sub.3 where x is within the range of from about 75 to about 94 weight percent, y is within the range of from about 5 to about 20 weight percent and z is within the range of from about 1 to about 5 weight percent of the Ni-Mo-Ti portion of the alloy. Also disclosed is a method of producing a low overvoltage cathode. The method includes the steps of taking a Ni-Mo-Ti core or substrate having about 5-20 weight percentage of Mo and about 1-5 weight percent Ti and coating it with aluminum then heat treating to form a Ni-Mo-Ti-Al ternary alloy with mostly NiAl.sub.

Abstract: An improved cathode with a conductive metal core and a Raney-type catalytic surface predominantly derived from an adherent NiAl.sub.3 crystalline precursory outer portion of the metal core is disclosed. The precursory outer portion preferably has molybdenum added to give a precursor alloy having the formula Ni.sub.x Mo.sub.1-x Al.sub.3 where x is within the range of from about 5 to about 15 weight percent. Also disclosed is a method of producing a low overvoltage cathode. The method includes the steps of taking a Ni-Mo core or substrate having about 5-20 weight percentage of Mo and coating it with aluminum then heat treating to form a Ni-Mo-Al alloy with mostly NaAl.sub.3 structure and then leaching out the Al to produce a Raney surface.

Abstract: An electrode is described which is comprised of an electroconductive substrate having an exterior surface of perovskite of the empirical formulaA A' B O.sub.3 (I)a. wherein A is lanthanum,B. wherein A' is an alkaline earth metal selected from the group consisting of calcium, strontium, barium, and mixtures thereof,C. wherein B is a transition metal selected from the group consisting of cobalt, chromium, tungsten, molybdenum, manganese, iron, nickel, rhenium, uranium, and mixtures thereof,D. wherein the atomic ratio of A:A' is in the range from about 0.05:1 to about 0.95:1,E. wherein the valence of A + A' + B = 6,f. wherein said electrode has a resistivity preferably less than about 10 milliohm-centimeters.sup.-1, andG. wherein said perovskite is substantially insoluble in the electrolyte contacting said electrode under typical conditions of electrolysis.

Abstract: The present invention relates to flexible electrode material, preferably lead chloride, and to a method and apparatus for the continuous manufacture thereof. Such electrode material is useful in sea water batteries for sonobuoys.

Abstract: An electrode is described which is comprised of an electroconductive substrate having an exterior surface of perovskite of the emperical formulaA A' B 0.sub.3 (I)a. wherein A is lanthanum,B. wherein A' is an alkaline earth metal selected from the group consisting of calcium, strontium, barium, and mixtures thereof,C. wherein B is a transition metal selected from the group consisting of cobalt, chromium, tungsten, molybdenum, manganese, iron, nickel, rhenium, uranium, and mixtures thereof,D. wherein the atomic ratio of A:A' is in the range from about 0.05:1 to about 0.95:1,E. wherein the valence of A + A' + B = 6,f. wherein said electrode has a resistivity preferably less than about 10 milliohm-centimeters.sup.-1, andG. wherein said perovskite is substantially insoluble in the electrolyte contacting said electrode under typical conditions of electrolysis.

Abstract: Flexible electrode material for use in salt water batteries, and a method and apparatus for the continuous manufacture of such material, are disclosed. The material is manufactured by guiding a strip-shaped mesh, e.g., a copper wire gauze, from a supply position through a bath of molten coating material, e.g. lead chloride, and vertically upwardly from the bath to cause the coating material to become deposited on the mesh, which is subsequently cooled. For guiding the mesh, the apparatus employs first guide rollers for guiding the mesh on a path of travel extending downwardly from the first guide rollers to a second guide roller, made of graphite, immersed in the bath, and third guide means for guiding the mesh upwardly from the graphite roller. Hydraulic jacks are provided for raising and lowering the bath to and from an elevated position in which the graphite roller is immersed in the bath.

Abstract: The present invention resides in an improved molten metal filter and a method of preparing same and a method of filtering molten metal therethrough. The filter is an open cell ceramic foam material having a plurality of interconnected voids surrounded by a web of said ceramic.

Abstract: A battery electrode structure of flat configuration comprises a cast mass of electrochemically active material, said mass having contained therein and exposed opposite surfaces thereof an open-mesh electrically conductive structure adapted for connection to a battery terminal. An open-mesh electrically conductive support member in the mass and in contact with the exposed electrically conductive structure maintains electrical conductivity throughout discharge to ensure maximum use of the active material.

Abstract: The present invention resides in an improved, high temperature resistant ceramic foam filter particularly useful for filtering molten metal, and also an aqueous slurry for use in preparing same.