Electroplating apparatus and method
US-2016222537-A1 · Aug 4, 2016 · US
Electrode for oxygen evolution in industrial electrochemical processes
US11098415B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11098415-B2 |
| Application number | US-201314439908-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 29, 2013 |
| Priority date | Nov 29, 2012 |
| Publication date | Aug 24, 2021 |
| Grant date | Aug 24, 2021 |
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.
The invention relates to an electrode for electrolytic processes, in particular to an anode suitable for oxygen evolution comprising a valve metal substrate, a catalytic layer, a protection layer consisting of oxides of valve metals interposed between the substrate and the catalytic layer and an outer coating of oxides of valve metals. The electrode of the invention is particularly suitable for processes of cathodic electrodeposition of chromium from an aqueous solution containing Cr (III).
First claim
Opening claim text (preview).
The invention claimed is: 1. Electrode suitable for oxygen evolution in electrolytic processes comprising a valve metal substrate, a catalytic layer, a protective layer consisting of valve metal oxides interposed between said substrate and said catalytic layer, and an external layer of a valve metal oxide, the valve metal oxide comprising tantalum pentoxide, said catalytic layer comprising mixed oxides of iridium, of tin and doping element M being bismuth, the molar ratio Ir:(Ir+Sn) ranging from 0.25 to 0.55 and the molar ratio M:(Ir+Sn+M) ranging from 0.02 to 0.15, wherein the specific loading of said valve metal oxides in said external layer ranges from 12 to 15 g/m 2 referred to the oxides. 2. The electrode according to claim 1 wherein said molar ratio M:(Ir+Sn+M) ranges from 0.05 to 0.12. 3. The electrode according to claim 1 wherein said molar ratio Ir:(Ir+Sn) ranges from 0.40 to 0.50. 4. The electrode according to claim 1 wherein said oxides of iridium, of tin and doping element M in said catalytic layer consist of crystallites of average size below 5 nm.
Assignees
Inventors
Classifications
Hydrogen production from non-carbon containing sources, e.g. by water electrolysis · CPC title
Electrodes (consumable anodes for the refining the metals C25C1/00 - C25C5/00); Connections thereof · CPC title
- C25D17/10Primary
Electrodes {, e.g. composition, counter electrode} · CPC title
from solutions of trivalent chromium · CPC title
at least one noble metal or noble metal oxide and at least one non-noble metal oxide · 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 US11098415B2 cover?
- The invention relates to an electrode for electrolytic processes, in particular to an anode suitable for oxygen evolution comprising a valve metal substrate, a catalytic layer, a protection layer consisting of oxides of valve metals interposed between the substrate and the catalytic layer and an outer coating of oxides of valve metals. The electrode of the invention is particularly suitable for…
- Who is the assignee on this patent?
- Industrie De Nora Spa
- What technology area does this patent fall under?
- Primary CPC classification C25D17/10. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Aug 24 2021 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).