# US 11,444,292 B2 · Anticorrosive and conductive material

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- Number: US 11,444,292 B2
- Document ID: US11444292B2
- Status: Granted
- Kind: B2
- Application number: 16/233,575
- Filed: 2018-12-27
- Published: 2020-07-02
- Granted: 2022-09-13
- Earliest claimed: 2018-12-27
- Assignees: Robert Bosch GmbH
- Applicants: Robert Bosch GmbH
- Inventors: Mordechai Kornbluth; Soo Kim; Jonathan Mailoa; Lei Cheng; Georgy Samsonidze; Boris Kozinsky; Nathan Craig; Saravanan Kuppan; Sondra Hellstrom; Jake Christensen
- Web page: https://patentgrep.com/patent/US11444292B2

## CPC

- H01M 8/0245: in the form of layered or coated products
- C25D 5/48: After-treatment of electroplated surfaces
- C25D 7/0614: {Strips or foils}
- C25D 9/04: with inorganic materials
- H01M 8/021: Alloys based on iron
- H01M 8/0228: in the form of layered or coated products
- H01M 2008/1095: {Fuel cells with polymeric electrolytes}
- Y02E 60/50: Fuel cells
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- C25D: PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

An anticorrosive and conductive substrate includes a bulk portion and a surface portion including a magnesium titanium material having a formula (I) TixMg1-xOy (I), where x is a number from 0 to ≤1 and y is a number from 1 to ≤2, and wherein at least about 50% of the magnesium titanium material has a cubic crystal structure, and wherein the magnesium titanium material is configured to impart anticorrosive and conductive properties to the substrate.

## Claims

### Claim 1

An anticorrosive and conductive substrate comprising:
a bulk portion; and
a surface portion including a magnesium titanium oxide material including both an electrically conductive TiO phase and an electrically insulating MgO phase, and including less than about 15 atomic % Ti,
wherein at least about 50% of the magnesium titanium oxide material includes both MgO and TiO having cubic crystal structures, and wherein the magnesium titanium material is configured to impart anticorrosive and conductive properties to the substrate.

### Claim 2 (depends on 1)

The substrate of claim 1, wherein the magnesium titanium oxide material includes between about 3 and 10 atomic % Ti.

### Claim 3 (depends on 1)

The substrate of claim 1, wherein the magnesium titanium oxide material further includes MgO and TiO nanodomains.

### Claim 4 (depends on 3)

The substrate of claim 3, wherein the TiO nanodomains are electrically conductive.

### Claim 5 (depends on 1)

The substrate of claim 1, wherein electrical conductivity of the material is greater than about 100 S cm−1.

### Claim 6 (depends on 1)

The substrate of claim 1, wherein an interfacial contact resistance between the substrate and the material is less than about 0.001 to 0.2 Ohm cm2.

### Claim 7 (depends on 1)

The substrate of claim 1, wherein the bulk portion is steel.

### Claim 8 (depends on 1)

The substrate of claim 1, wherein the bulk portion is glass and the material is configured to form a transparent film on the surface portion.

### Claim 9 (depends on 1)

The substrate of claim 1, wherein both MgO and TiO have matching cubic crystal structures.

### Claim 10 (depends on 1)

The substrate of claim 1, wherein the material further includes a solid solution of TiO distributed within the cubic crystal structure of MgO.

### Claim 11 (depends on 10)

The substrate of claim 10, wherein the distribution is uniform.

### Claim 12

An anticorrosive and conductive substrate comprising:
a bulk portion; and
a surface portion including a magnesium titanium oxide material having both an electrically insulating, chemically inert MgO phase and an electrically conductive TiO phase, and including more than about 10 atomic % Ti such that the material includes:
MgO cubic crystal structures and TiO cubic crystal structures, and
MgO electrically insulating nanodomains and TiO electrically conductive nanodomains,
the material being configured to impart anticorrosive and conductive properties to the substrate.

### Claim 13 (depends on 12)

The substrate of claim 12, wherein the material further includes at least one electrically conductive ordered Mg-Ti-O compound.

### Claim 14 (depends on 13)

The substrate of claim 13, where the at least one electrically conductive ordered Mg-Ti-O compound includes Mg2Ti7O15.

### Claim 15 (depends on 12)

The substrate of claim 12, wherein both MgO and TiO have matching cubic crystal structures.

### Claim 16 (depends on 12)

The substrate of claim 12, wherein the material further includes a solid solution of TiO distributed within the cubic crystal structure of MgO.