USA As Represented by Secretary of the Navy

Debra R Rolison

Jeffrey W Long

Joseph F Parker

Christopher N Chervin

Rhonda Michele Stroud

Jeremy J Pietron

Celia I Merzbacher

Joseph Z Stemple

Karen Swider Lyons

Alan D Berry

Paul A Desario

Ryan H DeBlock

Megan B Sassin

Joseph V Ryan

Benjamin P Hahn

Justin C Lytle

Jean M Wallace

Trevor N Zimmerman

Wendy Baker

Jane K Rice

Jeffery W Long

Travis G Novak

Brandon J Hopkins

Jeffrey C Owrutsky

Robert J Bernstein

Joseph S Melinger

Anne E Fischer

Robert B Balow

Todd H Brintlinger

Jesse S Ko

Zachary J Homrighaus

Katherine A Pettigrew

Ken Limparis

Michael S Logan

Karen E Swider

Michael B Pomfret

Zachary G Neale

Matthew R Buck

Michele L Anderson

Karen E Swider Lyons

Michelle L Anderson

Veronica M Cepak

Catherine A Morris

An oxide-based aerogel having cerium and nickel may be used as a water-gas shift reaction catalyst without producing methane as a byproduct. It may be made by forming a gel from a cerium salt and a nickel salt solution and converting the gel to an aerogel.

NiCeOx aerogels for methane suppression in the water-gas shift reaction

A composition having a gadolinium-, samarium-, or lanthanum-substituted porous cerium oxide and copper or gold nanoparticles. The composition can be exposed to electromagnetic radiation to form reactive oxygen species in the composition to decompose organophosphonate compounds. The composition may be made by forming a mixture of a cerium salt; a gadolinium, samarium, or lanthanum salt; and an epoxide; forming gel from the mixture; and drying the gel to form an aerogel, a xerogel, or an ambigel. Copper or gold nanoparticles are added or formed at any point in the method.

Stabilization of reactive oxygen species in ceria-based composite aerogels

Disclosed herein is a porous substrate having silver and optionally silver oxide and a silver sulfide coating. Also disclosed herein is a battery having a cathode, an anode, and a separator between the cathode and the anode. The cathode includes a substrate having silver and optionally silver oxide and a silver sulfide coating. Also disclosed herein is a method of submerging a substrate having silver and optionally silver oxide in a solution of elemental sulfur in dimethyl sulfoxide to form silver sulfide on the surface of the substrate.

Protective sulfide coatings on silver electrodes for electrochemical devices

A method of making an electrode by providing a mixture of first particles of silver or silver oxide and second particles of an inorganic porogen, molding the mixture, cohering the mixture to form a green body, demolding the green body, heating the green body to form a monolith, to convert any silver oxide to silver, and to fuse the first particles together, and submerging the monolith in a liquid that removes the second particles.

Fabrication of porous electrodes by fusion of silver particles

A method of: placing a mixture of zinc particles; water; a water-soluble thickener; and water-insoluble inorganic porogen particles into a mold; evaporating the water to form a monolith; heating the monolith to fuse the zinc particles together; and submerging the monolith in a liquid that removes the porogen particles. A method of: placing a mixture of zinc particles; an aqueous acetic acid solution; and porogen particles into a mold; evaporating water to form a monolith; and submerging the monolith in a liquid that removes the porogen particles.

Fabrication and fusion of zinc particles in porous electrodes

Disclosed are methods of making porous zinc electrodes. Taken together, the steps are: forming a mixture of water, a soluble compound that increases the viscosity of the mixture, an insoluble porogen, and metallic zinc powder; placing the mixture in a mold to form a sponge; optionally drying the sponge; placing the sponge in a metal mesh positioned to allow air flow through substantially all the openings in the mesh; heating the sponge in an inert atmosphere at a peak temperature of 200 to 420&#xb0; C. to fuse the zinc particles to each other to form a sintered sponge; and heating the sintered sponge in an oxygen-containing atmosphere at a peak temperature of 420 to 700&#xb0; C. to form ZnO on the surfaces of the sintered sponge. The heating steps burn out the porogen.

Zinc electrode improvements

A zinc-air battery having: a cathode, an anode, an electrolyte, a separator between the anode and the cathode, and a housing. The cathode includes: a cathode current collector and a composite having a porous carbon material, a porous cryptomelane-type MnOx material, a porous NiFeOx material, and a binder. The anode includes: a continuous network having metallic zinc and having metallic zinc bridges connecting metallic zinc particle cores and a continuous network of void space interpenetrating the zinc network. The electrolyte fills the void space in the anode, is in contact with the cathode, and permeates the composite without completely filling or obstructing a majority of the pores. The housing encloses the anode, the cathode, and the separator and exposes the composite to ambient air.

Rechargeable zinc/air batteries

A composition having: titania aerogel having titania nanoparticles and copper nanoparticles. Each of the copper nanoparticles is in contact with more than one of the titania nanoparticles. A method of: providing a titania aerogel, and forming or depositing copper nanoparticles onto the surface of the titania aerogel.

Copper nanoparticle-titania composite nanoarchitectures

An article having a continuous network of zinc and a continuous network of void space interpenetrating the zinc network. The zinc network is a fused, monolithic structure. A method of: providing an emulsion having a zinc powder and a liquid phase; drying the emulsion to form a sponge; annealing and/or sintering the sponge to form an annealed and/or sintered sponge; heating the annealed and/or sintered sponge in an oxidizing atmosphere to form an oxidized sponge having zinc oxide on the surface of the oxidized sponge; and electrochemically reducing the zinc oxide to form a zinc metal sponge.

Zinc electrodes for batteries

Disclosed is an article having: a porous thermally insulating material, an electrically conductive coating on the thermally insulating material, and a thermoelectric coating on the electrically conductive coating. Also disclosed is a method of forming an article by: providing a porous thermally insulating material, coating an electrically conductive coating on the thermally insulating material, and coating a thermoelectric coating on the electrically conductive coating. The articles may be useful in thermoelectric devices.

Thermoelectric materials

An article having a titanium, titanium carbide, titanium nitride, tantalum, aluminum, silicon, or stainless steel substrate, a RuOcoating on a portion of the substrate; and a plurality of platinum nanoparticles on the RuOcoating. The RuOcoating contains nanoparticles of RuO. A method of: immersing the substrate in a solution of RuOand a nonpolar solvent at a temperature that is below the temperature at which RuOdecomposes to RuOin the nonpolar solvent in the presence of the article; warming the article and solution to ambient temperature under ambient conditions to cause the formation of a RuOcoating on a portion of the article; and electrodepositing platinum nanoparticles on the RuOcoating.

Electrodes having Pt nanoparticles on RuOnanoskins

A composite having an electrically conductive substrate and a polymer derived from a vinyl-containing siloxane monomer coating on the substrate. A method of electropolymerizing a vinyl-containing siloxane monomer to form a coating on an electrically conductive substrate.

Cation-conductive conformal ultrathin polymer electrolytes

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Arlington, VA, United States of America

Debra R Rolison