# US 10,319,982 B2 · Coated iron electrode and method of making same

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- Number: US 10,319,982 B2
- Document ID: US10319982B2
- Status: Granted
- Kind: B2
- Application number: 14/169,275
- Filed: 2014-01-31
- Published: 2014-08-07
- Granted: 2019-06-11
- Earliest claimed: 2013-02-01
- Assignees: Encell Technology, Inc.
- Applicants: Encell Technology, Inc.
- Inventors: Randy Gene Ogg
- Web page: https://patentgrep.com/patent/US10319982B2

## CPC

- H01M 4/0404: {by coating on electrode collectors}
- H01M 4/248: {Iron electrodes}
- H01M 4/38: of elements or alloys
- H01M 4/621: {Binders}
- H01M 4/661: {Metal or alloys, e.g. alloy coatings (H01M4/669 take precedence)}
- H01M 4/74: Meshes or woven material; Expanded metal
- H01M 4/808: {Foamed, spongy materials}
- H01M 4/0411: {by extrusion}
- H01M 4/0419: {involving spraying}
- H01M 2004/021: {Physical characteristics, e.g. porosity, surface area}
- Y02E 60/10: Energy storage using batteries
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

Provided is 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. The iron based electrode is useful in a Ni—Fe battery as the anode. The electrode can also be prepared by continuously coating each side of the substrate with a coating mixture comprising the iron active material and binder.

## Claims

### Claim 1

A battery comprising a nickel based cathode and an iron anode, with the iron anode comprising a single layer of a conductive substrate coated on at least one side with a coating comprising an iron active material, polyvinyl alcohol and sulfur, wherein the iron active material comprises an Fe metal or iron oxide species, and the substrate is a metal foil, metal sheet, metal foam, metal mesh, woven metal, or expanded metal.

### Claim 2 (depends on 1)

The battery of claim 1, wherein the coating on at least one side comprises an antimony, selenium, and tellurium additive, or mixture thereof.

### Claim 3 (depends on 1)

The battery of claim 1, wherein the coating is on both sides of the substrate.

### Claim 4 (depends on 1)

The battery of claim 1, wherein the substrate is comprised of a nickel foam material.

### Claim 5 (depends on 1)

The anode battery of claim 1, wherein the coating comprises a pore former.

### Claim 6 (depends on 1)

The battery of claim 1, wherein the porosity of the iron anode is in the range of about 15-25%.