USA As Represented by Secretary of the Navy

Christopher N Chervin

Debra R Rolison

Jeffrey W Long

Joseph F Parker

Jeffrey C Owrutsky

Jeremy J Pietron

Justin C Lytle

Ryan H DeBlock

Joseph S Melinger

Katherine A Pettigrew

Michael B Pomfret

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

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

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

Disclosed herein is a metal-air battery having a cathode, an anode, and an electrolyte. The cathode has a cathode current collector and a composite of a porous carbon structure and a pseudocapacitive coating. The coating does not completely fill or obstruct a majority of the pores, and the pores can be exposed to a gas. The electrolyte is in contact with the anode and permeates the composite without completely filling or obstructing a majority of the pores.

Dual-function air cathode nanoarchitectures for metal-air batteries with pulse-power capability

Disclosed herein is an article having: a substrate and a RuOcoating having nanoparticles of RuO. Also disclosed herein is an article having: a substrate and a RuOcoating. The coating is made by: immersing the substrate in a solution of RuOand a nonpolar solvent at a temperature that is below the temperature at which RuOdecomposes to RuOand warming the substrate and solution to ambient temperature under ambient conditions to cause the formation of the coating.

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An article having: a nonconductive fiber and a RuOcoating. A method of: immersing a nonconductive article 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; and warming the article and solution to ambient temperature under ambient conditions to cause the formation of a RuOcoating on a portion of the article. An article having: a nonconductive fiber and a coating. The coating is made by electroless deposition, sputtering, atomic-layer deposition, chemical vapor deposition, or physical vapor deposition.

Growing community of inventors

Washington, DC, United States of America

Christopher N Chervin