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Solid electrolyte fuel cell unit

A solid electrolyte, fuel cell technology, used in solid electrolyte fuel cells, fuel cell components, fuel cells, etc.

Inactive Publication Date: 2009-05-27
PEZHO SITROEN AUTOMOBILS SA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology is less expensive than the previous ones, but has the disadvantage of being difficult to implement, notably because of the difficulty of fabricating the channels of complex shape and of good dimensional accuracy, which are necessary to obtain good electrical contacts and thus good fuel cell efficiencies

Method used

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Examples

Experimental program
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Embodiment Construction

[0021] figure 1 A stack of two single cells 1 and 1' of the fuel cell in the first embodiment is shown. Each single cell 1 or 1' of a substantially rectangular solid electrolyte fuel cell consists of stacks, which include, from the bottom of the single cell 1 upwards: a first stainless steel flat plate 3; a membrane electrode assembly (MEA) 5; Liners 6, which extend longitudinally of the cell and are spaced so as to leave an available empty space 8 between two adjacent liners; and a second stainless steel plate 4 on top of the liners 6. Aligned with each gasket 6 , the MEA 5 is squeezed between the corresponding gasket and the first stainless steel plate 3 . Between two adjacent gaskets 6, the membrane electrode assembly 5 is corrugated, thereby subdividing the space 8 between the gaskets 6 into two chambers located on either side of the membrane electrode assembly and used to allow the flow of active gas. Space 9 and 10. For example, the space 9 between the first stainless...

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Abstract

A solid electrolyte fuel cell comprising an electrode-membrane ( 5 ) unit disposed between two bi-polar plates ( 3 ) and ( 4 ), also comprising at least one electroconductive cross-member ( 6 ) arranged between one of the bi-polar plates ( 4 ) and the electrode-membrane unit ( 5 ) in order to keep the bipolar plates at a distance, wherein the electrode membrane unit ( 5 ) is configured in such a way that it can divide the area ( 10 ) defined by the bi-polar plates into at least one channel for the passage of a first gas ( 8 ) and at least one channel for the passage of a second gas ( 9 ). Fuel cell consisting of a cell stack.

Description

technical field [0001] The present invention relates to solid electrolyte fuel cells. Background technique [0002] A solid electrolyte fuel cell is an electrochemical device that generates electricity, consisting of a stack of single cells to which reactant gases are supplied and where chemical reactions occur, with generation of electricity and release of heat. A single cell consists of a "membrane electrode assembly (MEA)" inserted between two bipolar plates. MEAs consist of a proton-conducting polymer membrane used as an electrolyte, with a thickness in the range of 20 micrometers (μm) to 200 μm, sandwiched between two porous electrodes, each composed of a diffusion layer (paper or carbon fiber) deposited on active layer (porous carbon supporting palladium electrocatalyst) on the substrate). Two bipolar plates are used to collect power and distribute reactant gases and coolant. The reactant gases include firstly hydrogen supplied to the first side of the MEA, and seco...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/02H01M8/10H01M8/04
CPCY02E60/521H01M8/04089H01M8/04074H01M8/1006Y02E60/50
Inventor 文森特·兰登达米安·勒玛森古劳姆·炯科特帕特里克·勒盖罗
Owner PEZHO SITROEN AUTOMOBILS SA
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