Process of preparing a chemically pre-formed (CPF) iron negative electrode with oxidizing compounds
US-9478793-B2 · Oct 25, 2016 · US
Iron electrode employing a polyvinyl alcohol binder
US9478806B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9478806-B2 |
| Application number | US-201414170043-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 31, 2014 |
| Priority date | Feb 1, 2013 |
| Publication date | Oct 25, 2016 |
| Grant date | Oct 25, 2016 |
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 present invention provides one with an iron electrode employing a binder comprised of polyvinyl alcohol (PVA) binder. In one embodiment, the invention comprises an iron based electrode comprising a single layer of a conductive substrate coated on at least one side with a coating comprising an iron active material and a binder, wherein the binder is PVA. This iron based electrode is useful in alkaline rechargeable batteries, particularly as a negative electrode in a Ni—Fe battery.
First claim
Opening claim text (preview).
What is claimed is: 1. An iron electrode comprising an active iron material, sulfur and a polyvinyl alcohol binder in an amount of from 2 to 5 wt %. 2. The iron electrode of claim 1 , wherein the sulfur comprises elemental sulfur. 3. The iron electrode of claim 1 , wherein the iron electrode further comprises a nickel additive. 4. The iron electrode of claim 1 , wherein the active iron material comprises iron metal, an iron oxide material, or a mixture thereof. 5. The iron electrode of claim 4 , wherein the iron oxide material comprises Fe 3 O 4 . 6. The iron electrode of claim 1 , wherein the polyvinyl alcohol binder comprises polyvinyl alcohol that is hydrolyzed between 98.5 and 100%. 7. The iron electrode of claim 1 , wherein the polyvinyl alcohol binder comprises polyvinyl alcohol that is hydrolyzed between 99 and 100%. 8. The iron electrode of claim 1 , wherein the polyvinyl alcohol binder comprises from 2.5 to 4 wt % of the iron electrode. 9. A paste formulation for an iron electrode which comprises an active iron material, sulfur and from 2 to 5 wt % of a polyvinyl alcohol binder. 10. The paste formulation of claim 9 , wherein the formulation comprises from 2.5 to 4 wt % polyvinyl alcohol binder. 11. The paste formulation of claim 9 , wherein the sulfur comprises elemental sulfur. 12. The paste formulation of claim 9 , further comprising 1 nickel additive. 13. The paste formulation of claim 9 , wherein the active iron material comprises iron metal, an iron oxide material, or a mixture thereof. 14. The paste formulation of claim 13 , wherein the iron oxide material comprises Fe 3 O 4 .
Assignees
Inventors
Classifications
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 US9478806B2 cover?
- The present invention provides one with an iron electrode employing a binder comprised of polyvinyl alcohol (PVA) binder. In one embodiment, the invention comprises an iron based electrode comprising a single layer of a conductive substrate coated on at least one side with a coating comprising an iron active material and a binder, wherein the binder is PVA. This iron based electrode is useful i…
- Who is the assignee on this patent?
- Encell Technology Inc
- What technology area does this patent fall under?
- Primary CPC classification H01M4/248. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Oct 25 2016 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).