Titanium material, separator, fuel cell, and fuel cell stack
US-2021066729-A1 · Mar 4, 2021 · US
Separator and method for manufacturing separator
US11652218B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11652218-B2 |
| Application number | US-202117501242-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 14, 2021 |
| Priority date | Oct 16, 2020 |
| Publication date | May 16, 2023 |
| Grant date | May 16, 2023 |
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- Title
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Abstract
Official abstract text for this publication.
Provided are a low-price fuel cell separator with high corrosion resistance and a method for manufacturing the separator. The present disclosure relates to a fuel cell separator including a metal substrate and a titanium layer containing titanium formed on the metal substrate, and a method for manufacturing the separator. A ratio of a (100) plane to a sum of values obtained by dividing peak intensities of the (100) plane, a (002) plane, and a (101) plane derived from titanium in an X-ray diffraction analysis of a separator surface by respective relative intensities is a constant value or more.
First claim
Opening claim text (preview).
What is claimed is: 1. A fuel cell separator comprising: a metal substrate; and a titanium layer containing titanium formed on the metal substrate, wherein a ratio of a (100) plane to a sum of values obtained by dividing peak intensities of the (100) plane, a (002) plane, and a (101) plane derived from titanium in an X-ray diffraction analysis of a separator surface by respective relative intensities is 16.9% or more. 2. The fuel cell separator according to claim 1 , wherein a ratio of the (002) plane to the sum of the values obtained by dividing the peak intensities of the (100) plane, the (002) plane, and the (101) plane derived from titanium in the X-ray diffraction analysis of the separator surface by the respective relative intensities is 61.0% or less. 3. The fuel cell separator according to claim 1 , wherein the metal substrate is a stainless steel. 4. The fuel cell separator according to claim 2 , wherein the metal substrate is a stainless steel. 5. A method for manufacturing a fuel cell separator including a metal substrate and a titanium layer containing titanium formed on the metal substrate, wherein the titanium layer is formed on the metal substrate using a sputtering method under a condition of: (a) a UBM coil current value is 6.5 A to 10 A; or (b) a bias voltage value to the metal substrate is more than −700 V and −150 V or less. 6. The method according to claim 5 , wherein the metal substrate has an uneven shape.
Assignees
Inventors
Classifications
- H01M8/0206Primary
Metals or alloys · CPC title
only coatings of metal elements only · CPC title
including at least one pure metallic layer · CPC title
by cathodic sputtering · CPC title
corrugated or undulated · CPC title
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- What does patent US11652218B2 cover?
- Provided are a low-price fuel cell separator with high corrosion resistance and a method for manufacturing the separator. The present disclosure relates to a fuel cell separator including a metal substrate and a titanium layer containing titanium formed on the metal substrate, and a method for manufacturing the separator. A ratio of a (100) plane to a sum of values obtained by dividing peak int…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M8/0206. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue May 16 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).