Audi Ag

Ballard Power Systems Corporation

Utc Power Corporation

Sathya Motupally

Ned Emidio Cipollini

Lesia V Protsailo

David A Condit

Michael L Perry

Sergei F Burlatsky

Lei Chen

Thomas D Jarvi

Thomas Harry Madden

Mallika Gummalla

Timothy W Patterson

James A Leistra

Jared B Hertzberg

Belabbes Merzougui

Minhua Shao

Tommy Skiba

Chi-Hum Paik

Vishal Onkarmal Mittal

Andrew Haug

A membrane electrode assembly is provided which includes an anode; a cathode; a membrane between the anode and the cathode; and a protective layer between the membrane and at least one electrode of the anode and the cathode, the protective layer having a layer of ionomer material containing a catalyst, the layer having a porosity of between 0 and 10%, an ionomer content of between 50 and 80% vol., a catalyst content of between 10 and 50% vol., and an electrical connectivity between catalyst particles of between 35 and 75%. A configuration using a precipitation layer to prevent migration of catalyst ions is also provided.

Protective and precipitation layers for PEM fuel cell

An ion exchange membrane () for a fuel cell comprises a polymer having an acid functional group normally including protons, and having alkali metal ions partially ion-exchanged with the protons of the acid functional group of the membrane. The partial ion exchange of alkali metal ions into the membrane relates either to patterning of the exchanged ion make-up of the membrane, with some being ion exchanged and some not, or to the extent or concentration of the ion exchange in any particular location, or to both.

Membrane with increased durability from partial ion exchange

An example fuel cell electrode forming method includes covering at least a portion of a copper monolayer with a liquid platinum and replacing the copper monolayer to form a platinum monolayer from the liquid platinum.

Platinum monolayer for fuel cell

A membrane electrode assembly includes an anode including a hydrogen oxidation catalyst; a cathode; a membrane disposed between the anode and the cathode; and a peroxide decomposition catalyst positioned in at least one position selected from the group consisting of a layer between the anode and the membrane and a layer between the cathode and the membrane wherein the peroxide decomposition catalyst has selectivity when exposed to hydrogen peroxide toward reactions which form benign products from the hydrogen peroxide. The peroxide decomposition catalyst can also be positioned within the membrane. Also disclosed is a power-generating fuel cell system including such a membrane electrode assembly, and a process for operating such a fuel cell system. The assembly components contain ionomer material which can be perfluorinated or non-perfluorinated, high temperature, hydrocarbon, and the like.

Membrane electrode assemblies with hydrogen peroxide decomposition catalyst

A membrane electrode assembly includes an anode, a cathode, a membrane disposed between the anode and the cathode, wherein at least one of the anode, cathode and membrane contains a hydrocarbon ionomer, and an electrode catalyst disposed in at least one of the anode and the cathode, wherein the catalyst is a metal alloy catalyst.

Alloy catalysts for extending life of fuel cell membranes and ionomer

Growing community of inventors

Milford, CT, United States of America

Sathya Motupally