Redox device

Patent metadata

Field	Value
Publication number	US-9979040-B2
Application number	US-201414177418-A
Country	US
Kind code	B2
Filing date	Feb 11, 2014
Priority date	Feb 27, 2013
Publication date	May 22, 2018
Grant date	May 22, 2018

Abstract

A redox device, in particular a hydrogen-oxygen redox device, includes at least one redox unit which is provided for carrying out at least one redox reaction with consumption and/or production of a first gas, in particular hydrogen gas, and/or of a second gas, in particular oxygen gas. The redox device includes at least one gas purification unit for freeing the hydrogen gas of contamination by oxygen gas and/or freeing the oxygen gas of contamination by hydrogen gas.

First claim

The invention claimed is:

1. A redox device comprising:
at least one redox unit which is provided for carrying out at least one redox reaction with consumption and/or production of a first gas and/or of a second gas,
the at least one redox unit comprising:
at least one gas purification unit for freeing the first gas of contamination by the second gas and/or freeing the second gas of contamination by the first gas, the at least one gas purification unit comprises
at least one catalyst unit that catalyzes a reaction of oxygen gas and hydrogen gas into water, that includes at least one catalyst element consisting essentially of a platinum metal, the at least one catalyst element is implemented as a catalyst layer applied to a side of at least one electrode of the at least one redox unit, the side facing away from a reaction zone;

at least one further redox unit which is coupled to the at least one redox unit so as to allow exchange of material, wherein the at least one redox unit and the at least one further redox unit are configured as a fuel cell-electrolyzer pair;
a hydrogen line that directly connects the fuel cell-electrolyzer pair and that only includes a hydrogen storage tank located between the fuel cell-electrolyzer pair;
an oxygen line that directly connects the fuel cell-electrolyzer pair and that only includes an oxygen storage tank located between the fuel cell-electrolyzer pair; and
a water line that directly connects the fuel cell-electrolyzer pair and that only includes a water storage tank located between the fuel cell-electrolyzer pair.

2. The redox device according to claim 1 , wherein
the at least one redox unit is configured as a fuel cell.

3. The redox device according to claim 2 , wherein
the fuel cell is configured as an alkaline fuel cell.

4. The redox device according to claim 1 , wherein
the at least one redox unit is configured as an electrolyzer for producing hydrogen gas and/or oxygen gas.

5. The redox device according to claim 1 , wherein
the at least one catalyst element is arranged in and/or directly adjoining a gas space of the at least one redox unit which adjoins at least one electrode of the at least one redox unit.

6. The redox device according to claim 2 , wherein
the at least one gas purification unit comprises at least one catalyst unit for catalyzing a reaction of oxygen gas and hydrogen gas into water.

7. The redox device according to claim 3 , wherein
the at least one gas purification unit comprises at least one catalyst unit for catalyzing a reaction of oxygen gas and hydrogen gas into water.

8. The redox device according to claim 4 , wherein
the at least one gas purification unit comprises at least one catalyst unit for catalyzing a reaction of oxygen gas and hydrogen gas into water.

9. The redox device according to claim 1 , wherein
the at least one catalyst element has a cavity structure.

10. The redox device according to claim 1 , wherein
only the at least one redox unit comprises
an excess hydrogen line through which excess hydrogen gas is fed back into a gas flow to the fuel cell in a circuit, and
an excess oxygen line through which excess oxygen gas is fed back in a gas flow to the fuel cell in a circuit.

11. The redox device according to claim 1 , wherein
the hydrogen line includes only one excess hydrogen line, the excess hydrogen line directly extends from the redox unit to the hydrogen line at a position on the hydrogen line prior to the hydrogen storage tank to feed excess hydrogen gas back into the at least one redox unit only, and
the oxygen line includes only one excess oxygen line, the excess oxygen line directly extends from the redox unit to the oxygen line at a position on the oxygen line prior to the oxygen storage tank to feed excess oxygen gas back into the at least one redox unit only.

Assignees

• Astrium Gmbh
• Airbus Ds Gmbh

Inventors

• Jehle Walter
• Markgraf Sebastian
• Raatschen Willigert
• Lucas Joachim

Classifications

• Y02E60/50

  Fuel cells · CPC title

• H01M8/04223

  during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells · CPC title

• Y02P70/56

  Cross-Sectional Technologies · mapped topic

• H01M4/8657

  layered · CPC title

• H01M8/0662

  Treatment of gaseous reactants or gaseous residues, e.g. cleaning · CPC title