De Nora S.p.a.

Basf Fuel Cell Gmbh

Other

Basf Se Corporation

Industrie De Nora S.p.a.

De Nora Elettrodi S.p.a

Advent Technologies

Advent Technologies Holdings, Inc

Bayer Aktiengesellschaft

Basf Schweiz Ag

Emory Sayre De Castro

Robert J Allen

Khaleda Shaikh

Yu-Min Tsou

James R Giallombardo

Andrea Francesco Gulla

Daniel Czerwiec

Michael DeMarinis

Gian Nicola Martelli

Nora Gourdoupi

Enrico Ramunni

Christos L Chochos

Lixin Cao

George Paloumbis

Hua Deng

Vasilis G Gregoriou

Norman L Weinberg

J David Genders

Fritz Gestermann

Hans-Dieter Pinter

Jörg Belack

Sigmar Bräuninger

Moritz Ehrenstein

Gerd Speer

Detlef Ott

Andrew Van Dyke

Douglas R Malat

Ryan Pavlicek

Maria Josefina Cayetano

Seonghan Yu

Jeffrey G Morse

Manav Sharma

Michael Schneider

Zhenyu Liu

Aromatic polymers exhibiting thermal stability and conductivity upon imbibement into an acid are disclosed for electrochemical gas sensor applications. Membrane electrode assemblies for electrochemical gas sensors are also provided, comprising a sensing electrode, a counter electrode, and a polymer membrane comprising the polymers of the present invention, disposed between the sensing electrode and the counter electrode.

Thermally stable conductive polymers for electrochemical gas sensor applications

The present invention relates to a class of polymer ion imbibed membranes for electrolyte flow batteries. The membranes are a conducting aromatic polyether type copolymer bearing nitrogen heterocycles groups, especially pyridine type. While the membranes can be used in acid, basic, and neutral electrolytes, the nitrogen heterocycles in the membrane interact with acid in the electrolyte to form a proton transport network, so as to keep the proton transport performance of the membrane. The membrane has excellent mechanical stability and thermostability as well as tunable porosity.

Ion-imbibed membranes based on proton conducting aromatic polyether type copolymers and their application in redox flow batteries

The present invention relates to membrane electrode units (MEU) for high temperature fuel cells having an improved stability and a process for their manufacture.

Membrane electrode units for high temperature fuel cells with improved stability

The present invention relates to improved membrane electrode assemblies, having two electrochemically active electrodes separated by a polymer electrolyte membrane. The membrane electrode assemblies according to the instant invention contains at least one phosphoric acid-containing polymer electrolyte membrane and two gas diffusion electrodes one of each located at both sides of said membrane, each of the gas diffusion electrodes having at least one catalyst layer facing towards the membrane. At least one of the gas diffusion electrodes contains a gas diffusion medium comprising an electrically conductive macroporous layer in which the pores have a mean pore diameter in the range from 10 &#x3bc;m to 30 &#x3bc;m and at least one micro porous layer arranged between said gas diffusion medium and said catalyst layer facing towards the membrane having a defined pore void volume and pore hydrophobicity measured by the Cobb Titration.

Membrane electrode assemblies

A method of producing a catalyst for oxygen reduction and a gas diffusion electrode.

Catalyst for oxygen reduction

A method of producing a finely divided ruthenium-platinum alloy catalyst comprising:

Metal alloy for electrochemical oxidation reactions and method of production thereof

An improved structure for gas diffusion electrodes and gas diffusion layers whereby fine gradients of porosity and hydrophobicity promote efficient gas transport, water removal and overall enhanced performance of Membrane Electrode Assemblies constructed with these components.

Structures for gas diffusion materials and methods for their fabrication

Ruthenium sulfide catalyst and gas diffusion electrodes incorporating the same for reduction of oxygen in industrial electrolyzers which catalyst is highly resistant to corrosion making it useful for oxygen-depolarized aqueous hydrochloric acid electrolysis.

A carbon-supported platinum catalyst obtained by chemical reduction of in situ-formed platinum dioxide on a carbon support and a method of production thereof.

Platinum catalysts from in situ formed platinum dioxide

A gas diffusion electrode comprising an electrically conductive web, a non-catalyzed gas diffusion layer comprising at least one electroconductive filler and at least one binder, and a noble metal coating obtained by subjecting an electrically conductive web to a first ion beam having an energy not higher than 500 eV, then to a second beam having an energy of at least 500 eV, containing the ions of at least one noble metal.

Gas diffusion electrodes, membrane-electrode assemblies and method for the production thereof

A method for forming a noble metal coating on a gas diffusion medium substantially free of ionomeric components comprising subjecting an electrically conductive web to a first ion beam having an energy not higher than 500 eV, then to a second beam having an energy of at least 500 eV, containing the ions of at least one noble metal and electrodes provided by the method.

A rhodium sulfide electrocatalyst formed by heating an aqueous solution of rhodium salt until a steady state distribution of isomers is obtained and then sparging hydrogen sulfide into the solution to form the rhodium sulfide and a membrane electrode assembly with the said electrode and a process for electrolyzing hydrochloric acid.

Rhodium electrocatalyst and method of preparation

Structures and methods of manufacture for gas diffusion electrodes and electrode components

A process for electrolyzing an aqueous solution of hydrochloric acid to chlorine in an electrochemical cell provided with an anode compartment and a cathode compartment including at least one gas diffusion cathode comprising an electrically conductive web provided on at least one side thereof with a coating of a catalyst for the electroreduction of oxygen comprising rhodium sulfide and optionally containing at least one fluorinated binder incorporated therein, comprising introducing aqueous hydrochloric acid containing contaminant species into the anode compartment and oxygen into the cathode compartment while impressing a direct electric current on the cell.

Process for the electrolysis of technical-grade hydrochloric acid contaminated with organic substances using oxygen-consuming cathodes

This invention pertains to improved formulations of platinum-molybdenum alloys for use as anode catalysts. These electrocatalysts find utility as a constituent of gas diffusion electrodes for use in fuel cells that operate at less than 180&deg; C. or in applications whereupon hydrogen is oxidized in the presence of carbon monoxide or other platinum inhibiting substances. The new formulations derive unexpected activity through creating highly dispersed alloy particles of up to approximately 300 &angst; on carbon supports. The desired activity is achieved by carefully controlling the platinum to molybdenum ratio during preparation and judiciously selecting a proper loading of alloy on the carbon support.

Composition of a selective oxidation catalyst for use in fuel cells

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Nahant, MA, United States of America

Emory Sayre De Castro