Gm Global Technolgoy Operations, Inc.

Youssef Morcos Mikhail

Mahmoud H Abd Elhamid

Gayatri Vyas

Gayatri Vyas Dadheech

Richard H Blunk

Daniel John Lisi

Thomas A Trabold

Michael K Budinski

John Neal Owens

Feng Zhong

Curtis A Wong

Sundararajan Swathirajan

Timothy J Fuller

Gerald W Fly

Yang-Tse Cheng

Brian K Brady

Keith E Newman

Swathy Swathirajan

Roy Gerald Gordon

Hubert Gasteiger

Yang T Cheng

Michael J Lukitsch

Jeffrey M Guzda

Ilona Busenbender

Dawen Pang

An electrically conductive fluid distribution element for use in a fuel cell includes a conductive metal substrate and a layer of conductive non-metallic porous media. The conductive non-metallic porous media has an electrically conductive material deposited along a surface in one or more metallized regions and having an average thickness less than about 40 nm. The metallized regions improve electrical conductance at contact regions between the metal substrate and the fluid distribution media.

Electrical contact element for a fuel cell having an ultra-thin conductive layer coating

A fuel cell includes a first valve metal flow field plate. The first valve metal flow field plate has a first cooling channel adapted to receive an aqueous coolant and to contact the aqueous coolant at a position that inhibits the formation of shunt currents when the fuel cell is incorporated in a fuel cell stack. A field assembly includes a first metal flow field plate having a first cooling channel adapted to receive an aqueous coolant is also provided. A valve metal plate is disposed over the first metal flow field plate in the flow field assembly. Fuel cell stacks using the valve metal-containing flow field plates are also provided.

Method to minimize the impact of shunt currents through aqueous based coolants on PEM fuel cell bipolar plates

One embodiment of the invention includes an assembly of metal oxide comprising valve metal oxide nanotubes.

Nanotube assembly, bipolar plate and process of making the same

A flow field plate for fuel cell applications includes a metal with a non-crystalline carbon layer disposed over at least a portion of the metal plate. The non-crystalline carbon layer includes an activated surface which is hydrophilic. Moreover, the flow field plate is included in a fuel cell with a minimal increase in contact resistance. Methods for forming the flow field plates are also provided.

Amorphous carbon coatings for fuel cell bipolar plates

One embodiment of the invention includes a process including providing an electrically conductive fuel cell component having a first face, and depositing a graphitic/conductive carbon film on the first face of the electrically conductive fuel cell component comprising sputtering a graphite target using a closed field unbalanced magnetron field.

Non-noble metal inexpensive conductive coatings for fuel cell bipolar plates

One exemplary embodiment may include a method comprising: depositing a solution comprising an organometallic compound on a substrate, drying the solution to provide a film of the organometallic compound and at least partially oxidizing an organic component of the organometallic compound to provide nanoparticles including metal oxides on the substrate which would have multiuse industrial applications.

Method of coating a substrate with nanoparticles including a metal oxide

A method including providing a substrate; treating the substrate to form a passive layer, wherein the passive layer has a thickness of at least 3 nm; and

Passivated metallic bipolar plates and a method for producing the same

A flow field plate for fuel cell applications includes a metal with a graphene-containing layer disposed over at least a portion of the metal plate. The graphene-containing layer includes an activated surface which is hydrophilic. Moreover, the flow field plate is included in a fuel cell with a minimal increase in contact resistance. Methods for forming the flow field plates are also provided.

Graphene coated SS bipolar plates

In at least one embodiment, the present invention provides a hydrophilic electrically conductive fluid distribution plate and a method of making, and system for using, the hydrophilic electrically conductive fluid distribution plate. In at least one embodiment, the plate comprises a plate body defining a set of fluid flow channels configured to distribute flow of a fluid across at least one side of the plate, and a composite conductive coating having a water contact angle of less than 40&#xb0; adhered to the plate body. In at least one embodiment, the composite coating comprises a polymeric conductive layer adhered to the plate body having an exterior surface, and a particulate carbon layer adhered to the exterior surface of the polymeric conductive layer.

Hydrophilic, electrically conductive fluid distribution plate for fuel cell

A fuel cell component includes an electrode support material made with nanofiber materials of Titania and ionomer. A bipolar plate stainless steel substrate and a carbon-containing layer doped with a metal selected from the group consisting of platinum, iridium, ruthenium, gold, palladium, and combinations thereof.

Method to enhance the durability of conductive carbon coating of PEM fuel cell bipolar plates

In at least one embodiment, the present invention provides an electrically conductive fluid distribution plate and a method of making, and system for using, the electrically conductive fluid distribution plate. In at least one embodiment, the plate comprises a plate body defining a set of fluid flow channels configured to distribute flow of a fluid across at least one side of the plate, and a polymeric porous conductive layer proximate the plate body, with the porous conductive layer having a porosity sufficient to result in a water contact angle of the surface of less than 40&#xb0;.

Porous, electrically conductive fluid distribution plate for fuel cells

One embodiment disclosed includes a product comprising a fuel cell bipolar plate comprising a substrate comprising a first face, a reactant gas flow field defined in the first face, and a layer over at least a portion of the first face, wherein the layer comprises a zeolite.

Hydrophilic and corrosion resistant fuel cell components

A flow field plate or bipolar plate for a fuel cell that includes a carbide coating that makes the bipolar plate conductive, hydrophilic and stable in the fuel cell environment. Suitable carbides include, but are not limited to, chromium carbide, titanium carbide, tantalum carbide, niobium carbide and zirconium carbide. The carbide coating is then polished or textured by a suitable process, such as laser or chemical etching, to provide a surface morphology that makes the coating more hydrophilic, and further reduces the contact resistance on its surface.

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Sterling Heights, MI, United States of America

Youssef Morcos Mikhail