Separator plate with periodic surface structures in the nanometer to micrometer range
US-12057608-B2 · Aug 6, 2024 · US
Laser-surface-treated separator plate, method for producing same, and methods for characterizing same
US12592396B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12592396-B2 |
| Application number | US-202217930944-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 9, 2022 |
| Priority date | Sep 9, 2021 |
| Publication date | Mar 31, 2026 |
| Grant date | Mar 31, 2026 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A metal separator plate for an electrochemical system, having at least a first laser-surface-treated region with a first passivation layer and a second region with a native or reconstructed passivation layer, wherein, as a result of the laser surface treatment, the first passivation layer has: a charge carrier density that is increased by at least 10%, and a surface area that is no more than 5% larger in relation to the native or reconstructed passivation layer. The present disclosure further relates to methods for producing and characterizing such a separator plate.
First claim
Opening claim text (preview).
The invention claimed is: 1 . A metal separator plate for an electrochemical system, the metal separator plate comprising: at least a laser-surface-treated region with a first passivation layer and a second region with a native passivation layer, wherein the first passivation layer has a higher metal oxide and/or metal hydroxide content than the native passivation layer, and wherein, as a result of the laser surface treatment, the first passivation layer has: a charge carrier density that is increased by at least 10%, and a surface area that is no more than 5% larger in relation to the native passivation layer. 2 . The separator plate according to claim 1 , wherein the first passivation layer has a greater density of lattice defects, N-type charge carriers and/or P-type charge carriers than the native passivation layer. 3 . A metal separator plate for an electrochemical system, the metal separator plate comprising: a first passivation layer on the separator plate and at least part of the first passivation layer laser-surface-treated, at least one section having the first passivation layer at least partially removed, and the at least one section having a reconstructed passivation layer, wherein the first passivation layer has a higher metal oxide and/or metal hydroxide content than the reconstructed passivation layer, and wherein, as a result of the laser surface treatment, the first passivation layer has: a charge carrier density that is increased by at least 10% relative to the reconstructed passivation layer, and the at least one section having the first passivation layer at least partially removed is no more than 5% larger in relation to the reconstructed passivation layer. 4 . The separator plate according to claim 3 , wherein the first passivation layer has a greater density of lattice defects, N-type charge carriers and/or P-type charge carriers than the reconstructed passivation layer.
Assignees
Inventors
Classifications
characterised by the form (characterised by a channel configuration H01M8/0258) · CPC title
by shaping pulses · CPC title
Fuel cells with polymeric electrolytes · CPC title
- H01M8/0206Primary
Metals or alloys · CPC title
Fuel cells · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US12592396B2 cover?
- A metal separator plate for an electrochemical system, having at least a first laser-surface-treated region with a first passivation layer and a second region with a native or reconstructed passivation layer, wherein, as a result of the laser surface treatment, the first passivation layer has: a charge carrier density that is increased by at least 10%, and a surface area that is no more than 5%…
- Who is the assignee on this patent?
- Reinz Dichtungs Gmbh
- 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 Mar 31 2026 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 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).