Fuel cell contact element including a TiO2 layer and a conductive layer
First Claim
1. A fuel cell comprising a flow field plate being made of a plate material, said flow field plate including a plurality of flow channels responsive to a reactant gas, said flow field plate further including a TiO2 layer and a conductive layer that combine to make the plate conductive, hydrophilic and stable in a fuel cell environment.
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Accused Products
Abstract
A flow field plate or bipolar plate for a fuel cell that includes a combination of TiO2 and a conductive material that makes the bipolar plate conductive, hydrophilic and stable in the fuel cell environment. The TiO2 and the conductive material can be deposited on the plate as separate layers or can be combined as a single layer. Either the TiO2 layer or the conductive layer can be deposited first. In one embodiment, the conductive material is gold.
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Citations
36 Claims
- 1. A fuel cell comprising a flow field plate being made of a plate material, said flow field plate including a plurality of flow channels responsive to a reactant gas, said flow field plate further including a TiO2 layer and a conductive layer that combine to make the plate conductive, hydrophilic and stable in a fuel cell environment.
- 13. A fuel cell comprising a flow field plate being made of a plate material, said flow field plate including a plurality of flow channels responsive to a reactant gas, said flow field plate including an outer layer being a mixture of TiO2 and a conductive material that makes the plate conductive, hydrophilic and stable in a fuel cell environment.
- 22. A fuel cell comprising a flow field plate being made of a plate material, said flow field plate including a plurality of flow channels responsive to a reactant gas, said flow field plate further including a TiOx layer that makes the plate conductive, hydrophilic and stable in a fuel cell environment.
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31. A method for making a flow field plate for a fuel cell, said method comprising:
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providing a flow field plate being made of a plate material; and
depositing a non-stoichiometric metal oxide layer on the flow field plate that makes the plate conductive, hydrophilic and stable in a fuel cell environment. - View Dependent Claims (32, 33, 34, 35, 36)
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Specification