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Fuel cell seal

A technology for fuel cells and seals, which is applied in the directions of fuel cells, fuel cell additives, and fuel cell parts, etc., can solve the problems of shortening the service life of seals, disadvantages, etc.

Inactive Publication Date: 2011-09-21
UNITED TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, hydrogen and oxygen flowing through a seal can combine to form superheated vapors that, over time, can form pores and degrade the seal, adversely reducing seal life

Method used

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  • Fuel cell seal
  • Fuel cell seal
  • Fuel cell seal

Examples

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Embodiment Construction

[0015] refer to figure 1 and figure 2 , example fuel cell stack assembly 10 includes a solid oxide fuel cell (SOFC) 14 disposed between SOFC 14a and SOFC 14b. The first metal plate 18 and the second metal plate 22 are secured at opposite ends of the fuel cell stack assembly 10 . Electrons move from SOFC 14a to second metal plate 22 via SOFC 14 and SOFC 14b, thereby supplying electrical energy along path 26 from fuel cell stack assembly 10 in a known manner. In some embodiments, SOFC 14 is also referred to as a fuel cell stack repeat unit.

[0016] The example SOFC 14 includes three layers of cells 30 . This example includes electrolyte layer 34 disposed between cathode layer 38 and anode layer 42 . Mounting plate 46 is mounted to cell 30 and is coupled to seal assembly 50 to control fluid flow within SOFC 14 . Electrolyte layer 34 is also bonded to seal assembly 50 . The cathode layer 38 extends partially through the mounting board 46 toward the cathode interconnect 54 ...

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PUM

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Abstract

An exemplary fuel cell seal assembly includes a first layer, a second layer; and a third layer that limits movement of hydrogen, oxygen, or both between the first layer and the second layer within a fuel cell.

Description

technical field [0001] The present invention relates generally to a fuel cell, and more particularly to a sealing arrangement for a fuel cell. Background technique [0002] Fuel cell assemblies are well known. One type of fuel cell is a solid oxide fuel cell (SOFC). As is known, many SOFCs comprise a three-layer cell with an electrolyte layer between a cathode and an anode. An interconnect near the anode and another interconnect near the cathode facilitates electrical connection of the fuel cells to adjacent fuel cells in the fuel cell stack assembly. [0003] Seals help control the flow of fluids, such as fuel and oxidizer, within the fuel cell stack assembly. For example, some seals are used to seal the sealing area between the cell and the fuel cell frame. Other seals are used to control flow near the interface of adjacent fuel cells. Some SOFCs include silver and copper seals. As is known, silver and copper seals or silver and copper oxide (CuO) seals bond metals a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/02
CPCY02E60/521H01M8/0282Y02E60/50Y02E60/525H01M8/0276H01M2008/1293H01M8/12H01M8/04H01M8/02C09K3/10H01M8/0273H01M8/2432H01M8/2457
Inventor J·亚马尼斯
Owner UNITED TECH CORP