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Fuel cell metal separator and noble metal coating method therefor

一种金属隔板、燃料电池的技术，应用在燃料电池、燃料电池助剂、燃料电池的零部件等方向，能够解决金易剥离、无法长期良好使用、金属隔板耐用年数下降等问题，达到抑制剥离的效果

Active Publication Date: 2012-10-17
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, gold-plated metal separators tend to peel off easily, and there is a concern that they cannot be used satisfactorily for a long period of time.
Therefore, the durability of metal partitions decreases

Method used

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  • Fuel cell metal separator and noble metal coating method therefor
  • Fuel cell metal separator and noble metal coating method therefor
  • Fuel cell metal separator and noble metal coating method therefor

Examples

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Embodiment Construction

[0028] like figure 1 and figure 2 As shown, the electrolyte membrane electrode structure (electrolyte electrode structure) 14 of the fuel cell 10 is sandwiched between the first metal separator 16 and the second metal separator 18 according to the first embodiment of the present invention. The electrolyte membrane electrode structure 14 and the first metal separator 16 and the second metal separator 18 are laminated in the horizontal direction (arrow A direction) such that the electrode surfaces are vertical surfaces.

[0029] The first metal separator 16 and the second metal separator 18 have a vertically long shape extending in the direction of gravity. The first metal separator 16 and the second metal separator 18 are made of, for example, a steel plate, a stainless steel plate, an aluminum plate, or a plated steel plate, and have a rectangular shape in plan, and are formed by stamping a thin metal plate into a corrugated plate shape. It is the concave-convex shape of th...

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Abstract

The invention provides a fuel cell metal separator and a noble metal coating method therefor. A first metal separator (16) and an electrolyte electrode assembly (14) are stacked in a fuel cell (10). The first metal separator with the waved shape comprises a convex portion (28a) that abuts against the electrolyte electrode assembly (14), and a concave portion (28b) forming an oxygen-containing gas flow channel (26) between the electrolyte electrode assembly (14) and the concave portion (28a). A gold coating layer (46a) is formed on the convex portion (28a). The gold coating layer (46a) includes a main gold coating portion and a reticulate gold coating portion that extends around the main gold coating portion.

Description

technical field [0001] The present invention relates to a metal separator for a fuel cell that is laminated on an electrolyte electrode structure having a pair of electrodes on both sides of the electrolyte to constitute a fuel cell, and a noble metal coating method thereof. Background technique [0002] For example, a solid polymer fuel cell includes a unit cell (electric power generation cell) in which an electrolyte membrane electrode assembly (MEA) is sandwiched between a pair of separators. An anode electrode and a cathode electrode are disposed on both sides of the formed electrolyte membrane (electrolyte), respectively. [0003] Generally, when such a fuel cell is used for a vehicle, it is used as a fuel cell stack in which a predetermined number (for example, tens to hundreds) of unit cells are stacked in order to obtain a desired power generation. [0004] At this time, a reaction gas flow path through which the reaction gas flows along the electrode surface is for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/02H01M8/04C23C26/00
CPCC23C24/04H01M2008/1095H01M2250/20Y02T90/32H01M8/0206Y02E60/50H01M8/0228Y02T90/40
Inventor 宇都宫政男大谷辉幸河村俊树
Owner HONDA MOTOR CO LTD
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