Method for making an assembly of base elements for a fuel cell substrate
OwnerRenaut Mosdale, Pierre Baurensinventors
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Abstract
The method enables manufacture of assemblies of several basic elements for a stage of a fuel cell, without making use of expensive machining or difficult mechanical assemblies. The method consists of using a basic porous matrix (20) in which an ionic conductor (24) surrounded by an anode (22) and an electrode (23) is deposited, for each basic element, and the assembly is isolated by a peripheral seal (21) and pairs of isolating walls (25). Electronic conductors (26) connect the anode (22) of a basic element to the cathode (23) of the basic element adjacent to it. This method may be applied to all fuel cells.
Claims9
Manufacturing process for making an assembly of anode/membrane/cathode basic elements of a stage of a fuel cell and composed of several anode/membrane/cathode basic elements connected to each other through an electronic conductor (26) connecting the anode (22) of one basic element to the cathode (23) of the adjacent basic element, the assembly comprising:
- a series of anodes (22) on a first side of a plate forming the assembly, and isolated from each other;
- a series of cathodes (23) on the second side of the plate forming the assembly, and isolated from each other and slightly offset from the series of anodes (22);
- an ionic conductor (24) between each anode (22)/cathode (23) pair placed within the thickness of the assembly;
- the electronic conductor (26);
- pairs of vertical isolating walls (25) around each electronic conductor (26);
- a peripheral seal (21) placed around all these elements through the entire thickness of the plate, with a slight overthickness on each side,
- the process being characterised in that it consists mainly of using a plate of grid material as a support, in which and on which the constituent materials of the different elements of the assembly are deposited, and depositing a joint layer through the entire thickness of the plate around the periphery with a slight overthickness and pairs of two vertical isolating walls (25) to delimit the different basic elements.
Dependencies are inferred from the claim text.