Gm Global Technolgoy Operations, Inc.

Daniel E Rodak

Yang T Cheng

Mei Cai

Mark William Verbrugge

Tao Xie

Michael P Balogh

William R Rodgers

Michael J Lukitsch

Martin S Ruthkosky

One embodiment includes compositions of shape memory epoxy polymers.

Shape memory epoxy polymers

A method for embedding a hydrophilic and electrically conductive layer into a flow field plate or bipolar plate for a fuel cell. In one embodiment, the layer is niobium doped titanium oxide in a powder form. The method includes mixing the powder material in a suitable solution, such as a solvent. The solution is deposited on a substrate, such as a stainless steel substrate, by any suitable process, such as brushing. The substrate is then heated so that the solvent evaporates to leave a coating of the powder material. The substrate is then positioned in a die press and is stamped to the shape of the bipolar plate, where the stamping operation embeds the powder material into an outer surface of the bipolar plate.

Method for making super-hydrophilic and electrically conducting surfaces for fuel cell bipolar plates

Films of magnesium mixed with titanium are produced by non-equilibrium alloying processes such as electron beam evaporation of magnesium and titanium ingots in a very low pressure chamber. Such magnesium-titanium films form as single phase solid solutions. Titanium is inherently resistant to corrosion and its admixture with magnesium in solid solution provides a new composition that is less subject to intra-film galvanic corrosion. The magnesium-titanium films also provide relatively hard and strong coatings.

Magnesium-titanium solid solution alloys

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Southfield, MI, United States of America

Daniel E Rodak