Process of preparing a chemically pre-formed (cpf) iron negative electrode with oxidizing gases
US-2015059931-A1 · Mar 5, 2015 · US
Process of preparing a chemically pre-formed (CPF) iron negative electrode with water
US9816170B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9816170-B2 |
| Application number | US-201414478922-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 5, 2014 |
| Priority date | Sep 5, 2013 |
| Publication date | Nov 14, 2017 |
| Grant date | Nov 14, 2017 |
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- Title
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Abstract
Official abstract text for this publication.
Provided is a process for preparing an electrode comprising an iron active material. The process comprises first fabricating an electrode comprising an iron active material, and then treating the surface of the electrode with water to thereby create an oxidized surface. The resulting iron electrode is preconditioned prior to any charge-discharge cycle to have the assessable surface of the iron active material in the same oxidation state as in discharged iron negative electrodes active material.
First claim
Opening claim text (preview).
What is claimed is: 1. A process for preparing an electrode comprising an iron active material, which comprises: i) fabricating an electrode comprising an iron active material, and ii) treating the surface of the electrode with water to thereby create an oxidized surface prior to any charge-discharge cycle. 2. The process of claim 1 , wherein the water comprises deionized water. 3. The process of claim 1 , wherein the iron electrode surface has been treated with water prior to any charge-discharge cycle to have the accessible surface of the iron material in the same oxidation state as discharged iron negative electrode active material. 4. The process of claim 3 , wherein the oxidation state of the oxidized iron active material is +2, +2/+3, +3 or +4. 5. The process of claim 1 , wherein the electrode further comprises a binder. 6. The process of claim 1 , wherein the electrode further comprises sulfur. 7. The process of claim 1 , wherein the electrode further comprises a conductive additive. 8. The process of claim 7 , wherein the conductive additive comprises nickel, or copper or carbon black. 9. The process of claim 1 , wherein the electrode comprises an iron active material comprising about: 50-90 wt % iron powder 5-30 wt % nickel powder 0.5-5.0 w % binder, and 0.25-2.0 w % sulfur. 10. The process of claim 1 , wherein the electrode comprise a single layer of conductive substrate coated on at least one side with a coating comprising the iron active material. 11. The process of claim 10 , wherein the substrate is comprised of nickel plated steel. 12. The process of claim 1 , wherein the porosity of the electrode is in the range of about 15-50%. 13. The process of claim 1 , wherein the treatment of the surface of the electrode comprises coating, dipping, spraying or brushing the water on the surface of the electrode. 14. The process of claim 13 , wherein the water is brushed on the surface of the electrode. 15. The process of claim 13 , wherein the water is sprayed on the surface of the electrode. 16. The process of claim 13 , wherein the electrode is dipped in water.
Assignees
Inventors
Classifications
Cross-Sectional Technologies · mapped topic
Chemical attack of the support material · CPC title
- C23C8/18Primary
Oxidising of ferrous surfaces · CPC title
Iron electrodes · CPC title
Processes of manufacture · CPC title
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- What does patent US9816170B2 cover?
- Provided is a process for preparing an electrode comprising an iron active material. The process comprises first fabricating an electrode comprising an iron active material, and then treating the surface of the electrode with water to thereby create an oxidized surface. The resulting iron electrode is preconditioned prior to any charge-discharge cycle to have the assessable surface of the iron …
- Who is the assignee on this patent?
- Encell Technology Inc
- What technology area does this patent fall under?
- Primary CPC classification C23C8/18. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Nov 14 2017 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).