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Fuel cell electrode assembly

A fuel cell electrode, electrode technology, applied in the direction of fuel cells, battery electrodes, fuel cell components, etc., can solve the problems of labor-intensive and time-consuming

Active Publication Date: 2015-05-20
AUDI AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Typical assembly procedures are relatively time-consuming, labor-intensive and thus tend to introduce additional costs

Method used

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  • Fuel cell electrode assembly
  • Fuel cell electrode assembly
  • Fuel cell electrode assembly

Examples

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Embodiment Construction

[0011] figure 1 A fuel electrode assembly 20 considered to be a combined electrode assembly (UEA) is schematically shown. The illustrated UEA 20 includes a membrane 24 , a first electrode 26 on one side of the membrane 24 and a second electrode 28 on the opposite side of the membrane 24 . One of the electrodes 26, 28 is configured to function as an anode electrode and the other electrode 26, 28 is configured to function as a cathode electrode.

[0012] The first gas diffusion layer 30 is adjacent to the first electrode 26 and firmly fixed to the first electrode 26 at least along the outer circumference of the first gas diffusion layer 30 . The second gas diffusion layer 32 is firmly fixed adjacent to the second electrode 28 at least along the outer periphery of the second gas diffusion layer 32 . An electrically isolating plastic layer 34 is positioned between the second gas diffusion layer 32 and the second electrode 28 . The electrically isolating plastic layer 34 electri...

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Abstract

An exemplary fuel cell electrode assembly includes a membrane. A first electrode is on the first side of the membrane. A second electrode is on a second side of the membrane. A first gas diffusion layer is adjacent the first electrode. At least a portion of the first gas diffusion layer is at least partially impregnated by a first plastic material that bonds the portion of the first gas diffusion layer to the first electrode. A second gas diffusion layer is adjacent the second electrode. At least a portion of the second gas diffusion layer is at least partially impregnated by a second plastic material that bonds the second gas diffusion layer to the second electrode. A third plastic material is between at least one of the gas diffusion layers and the adjacent electrode for electrically isolating the first gas diffusion layer from the second gas diffusion layer.

Description

Background technique [0001] Fuel cells can be used to generate electricity. Fuel cells facilitate electrochemical reactions between reactants such as hydrogen and oxygen. Various components exist within a fuel cell including an electrode assembly. [0002] An example electrode assembly includes a membrane with electrodes on both sides of the membrane. One of the electrodes serves as a cathode and the other serves as an anode. In some fuel cell designs, a gas diffusion layer is disposed between the electrodes and a reactant distribution plate that facilitates directing the reactants toward the membrane. [0003] There are various challenges associated with assembling fuel cells, including achieving proper alignment of the various components within the fuel cell. Typical assembly procedures are relatively time consuming, labor intensive and thus tend to introduce additional costs. Contents of the invention [0004] Exemplary fuel cell electrode assemblies include membrane...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/02H01M4/86H01M8/10
CPCH01M8/023H01M8/0284H01M2008/1095H01M8/0286Y02E60/50H01M4/8657H01M4/8807H01M4/8896H01M8/0276H01M8/028H01M8/0282H01M8/1004
Inventor T.F.小维奇诺
Owner AUDI AG