Abstract: Disclosed are cathodes comprising a conductive support substrate having an electrocatalyst coating containing nickel phosphide nanoparticles. The conductive support substrate is capable of incorporating a material to be reduced, such as CO2 or CO. A co-catalyst, either incorporated into the electrolyte solution, or adsorbed to, deposited on, or incorporated into the bulk cathode material, provides increased selectivity and activity of the nickel phosphide electrocatalyst. Also disclosed are electrochemical methods for selectively generating hydrocarbon and/or carbohydrate products from CO2 or CO using water as a source of hydrogen.

Abstract: Disclosed are cathodes comprising a conductive support substrate having a catalyst coating containing nickel phosphide nanoparticles. The conductive support substrate is capable of incorporating a material to be reduced, such as CO2 or CO. Also disclosed are electrochemical methods for generating hydrocarbon and/or carbohydrate products from CO2 or CO using water as a source of hydrogen.

Abstract: Disclosed are cathodes comprising a conductive support substrate having a catalyst coating including Ni5P4 nanocrystals. The conductive support substrate is capable of incorporating a material to be reduced, such as water or hydrogen cations. Also disclosed are methods for generating hydrogen gas from water via an electrolysis reaction or from the reduction of hydrogen cations, wherein the catalyst is part of a conductive support within a cathode, including (a) placing an anode and the inventive cathode in an electrolyte, (b) placing the anode and cathode in conductive contact with an external source of electricity, (c) providing a source of water to the cathode, and (d) using the external source of electricity to drive an electrolysis reaction at the cathode, whereby the hydrogen gas is generated from water. In certain embodiments, the reaction uses a free catalyst, wherein the catalyst is placed in proximity to the cathode.

Abstract: Disclosed are cathodes comprising a conductive support substrate having a catalyst coating containing nickel phosphide nanoparticles. The conductive support substrate is capable of incorporating a material to be reduced, such as CO2 or CO. Also disclosed are electrochemical methods for generating hydrocarbon and/or carbohydrate products from CO2 or CO using water as a source of hydrogen.

Abstract: Disclosed are cathodes comprising a conductive support substrate having a catalyst coating including Ni5P4 nanocrystals. The conductive support substrate is capable of incorporating a material to be reduced, such as water or hydrogen cations. Also disclosed are methods for generating hydrogen gas from water via an electrolysis reaction or from the reduction of hydrogen cations, wherein the catalyst is part of a conductive support within a cathode, including (a) placing an anode and the inventive cathode in an electrolyte, (b) placing the anode and cathode in conductive contact with an external source of electricity, (c) providing a source of water to the cathode, and (d) using the external source of electricity to drive an electrolysis reaction at the cathode, whereby the hydrogen gas is generated from water. In certain embodiments, the reaction uses a free catalyst, wherein the catalyst is placed in proximity to the cathode.

Abstract: A catalyst for the electrolysis of water molecules and hydrocarbons, the catalyst including catalytic groups comprising A1-xB2-yB?yO4 spinels having a cubical M4O4 core, wherein A is Li or Na, B and B? are independently any transition metal or main group metal, M is B, B?, or both, x is a number from 0 to 1, and y is a number from 0 to 2. In photo-electrolytic applications, a plurality of catalytic groups are supported on a conductive support substrate capable of incorporating water molecules. At least some of the catalytic groups, supported by the support substrate, are able to catalytically interact with water molecules incorporated into the support substrate. The catalyst can also be used as part of a photo-electrochemical cell for the generation of electrical energy.

Abstract: A catalyst for the electrolysis of water molecules and hydrocarbons, the catalyst including catalytic groups comprising A1-xB2?yB?yO4 spinels having a cubical M4O4 core, wherein A is Li or Na, B and B? are independently any transition metal or main group metal, M is B, B?, or both, x is a number from 0 to 1, and y is a number from 0 to 2. In photo-electrolytic applications, a plurality of catalytic groups are supported on a conductive support substrate capable of incorporating water molecules. At least some of the catalytic groups, supported by the support substrate, are able to catalytically interact with water molecules incorporated into the support substrate. The catalyst can also be used as part of a photo-electrochemical cell for the generation of electrical energy.

Abstract: A device for conducting protons at a temperature below 550° C. includes a LAMOX ceramic body characterized by an alpha crystalline structure.

Abstract: A device for conducting protons at a temperature below 550° C. includes a LAMOX ceramic body characterized by an alpha crystalline structure.

Abstract: New solid state pH and sodium ion sensitive metal-oxide-type compositions, sensors and methods are disclosed. Performance thereof was demonstrated at ambient temperature with single crystals of several molybdenum bronzes (i.e. Na.sub.0.9 Mo.sub.6 O.sub.17, Li.sub.0.9 Mo.sub.6 O.sub.17, Li.sub.0.33 MoO.sub.3 and K.sub.0.3 MoO.sub.3) The pH sensors with Na-molybdenum-oxide bronzes show near ideal Nernstian behavior in the pH range 3-9. The response is not affected by the direction of the pH change.

Abstract: A humidity sensing device comprising a solid electrolyte evidencing proton conductivity includes HZr.sub.2 P.sub.3 O.sub.12 or a composite comprising HZr.sub.2 P.sub.3 O.sub.12 /ZrP.sub.2 O.sub.7. The humidity sensing device is operative over a temperature range from 25.degree. C.-600.degree. C. The humidity sensor is operated by an impedance-type cell.

Abstract: A humidity sensing device comprising a solid electrolyte evidencing proton conductivity includes HZr.sub.2 P.sub.3 O.sub.12 or a composite comprising HZr.sub.2 P.sub.3 O.sub.12 /ZrP.sub.2 O.sub.7. The humidity sensing device is operative over a temperature range from 350.degree.-600.degree. C. The humidity sensor is operated by an impedance-type cell.

Abstract: A humidity sensing device comprising a solid electrolyte evidencing proton conductivity includes a composite comprising HZr.sub.2 P.sub.3 O.sub.12 /ZrP.sub.2 O.sub.7. The humidity sensing device is operative over a temperature range from 350.degree.-600.degree. C.