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US 6,309,769 B1Granted
Carbon monoxide filter layer
AssigneePlug Power Inc.
InventorAndrew T. Haug
Life of this patent
Estimating the term…
Abstract
A carbon monoxide filter layer that can be used, for example, in an electrode unit, a fuel cell, and/or a fuel cell stack is disclosed.
Claims79
An electrode unit comprising:
- a first gas diffusion layer;
- a second gas diffusion layer;
- a solid electrolyte between the first and the second gas diffusion layers;
- a first catalyst layer between the solid electrolyte and the first gas diffusion layer;
- a first carbon monoxide filter layer between the first catalyst layer and the first gas diffusion layer;
- and
- a second catalyst layer between the solid electrolyte and the second gas diffusion layer.
4 more elements
An electrode unit comprising:
- a first gas diffusion layer;
- a first carbon monoxide filter layer;
- a solid electrolyte between the first gas diffusion layer and the first carbon monoxide filter layer;
- a first catalyst layer between the solid electrolyte and the first gas diffusion layer;
- and
- a second gas diffusion layer between the solid electrolyte and the first carbon monoxide filter layer;
- and
- a second catalyst layer between the solid electrolyte and the second gas diffusion layer.
5 more elements
A fuel cell comprising:
- a first flow field plate;
- a second flow field plate;
- a solid electrolyte between the first and second flow field plates;
- a first catalyst layer between the solid electrolyte and the first flow field plate;
- a first carbon monoxide filter layer between the first catalyst layer and the first flow field plate;
- a first gas diffusion layer between the first carbon monoxide filter layer and the first flow field plate;
- a second catalyst layer between the solid electrolyte and the second flow field plate;
- and
- a second gas diffusion layer between the second catalyst and the second flow field plate.
6 more elements
A fuel cell stack comprising:
- a first fuel cell comprising:
- a first flow field plate having an inlet;
- a second flow field plate having an inlet;
- a first solid electrolyte between the first and second flow field plates;
- a first catalyst layer between the solid electrolyte and the first flow field plate;
- a first carbon monoxide filter layer between the first catalyst layer and the first flow field plate;
- a first gas diffusion layer between the first carbon monoxide filter layer and the first flow field plate;
- a second catalyst layer between the solid electrolyte and the second flow field plate;
- and
- a second gas diffusion layer between the second catalyst and the second flow field plate;
- and
- a second fuel cell comprising:
- a third flow field plate having an inlet in fluid communication with the first flow field plate inlet;
- a fourth flow field plate having an inlet in fluid communication with the second flow field plate inlet;
- a second solid electrolyte between the third and fourth flow field plates;
- a third catalyst layer between the second solid electrolyte and the third flow field plate;
- a third gas diffusion layer between the third catalyst layer and the third flow field plate;
- a fourth catalyst layer between the second solid electrolyte and the fourth flow field plate;
- and
- a fourth gas diffusion layer between the fourth catalyst and the fourth flow field plate.
17 more elements
A method of operating a fuel cell system, the method comprising:
- introducing a first gas to a first fuel cell;
- contacting the first gas with a first carbon monoxide filter layer contained in the first fuel cell;
- and
- contacting the first gas with a first catalyst layer contained in the first fuel cell and different than the first carbon monoxide filter layer.
1 more element
Dependencies are inferred from the claim text.