Conductive, anticorrosive magnesium titanium oxide material

Patent metadata

Field	Value
Publication number	US-12503782-B2
Application number	US-202217679480-A
Country	US
Kind code	B2
Filing date	Feb 24, 2022
Priority date	Nov 6, 2019
Publication date	Dec 23, 2025
Grant date	Dec 23, 2025

Abstract

An electrolyzer system includes an anticorrosive, conductive material including a first oxide having oxygen vacancies and a formula (Ia): MgTi 2 O 5-δ (Ia), where δ is any number between 0 and 3 including a fractional part denoting the oxygen vacancies; and a second oxide having a formula (II): Ti a O b (II), where 1<=a<=20 and 1<=b<=30, optionally including a fractional part, the first and second oxides of formulas (Ia) and (II) forming a polycrystalline matrix within the electrolyzer system.

First claim

What is claimed is:

1 . An electrolyzer system comprising:
an anticorrosive, conductive material including
a first oxide having oxygen vacancies and a formula (Ia):
MgTi 2 O 5-δ   (Ia),

where δ is any number between 0 and 3 including a fractional part denoting the oxygen vacancies; and
a second oxide having a formula (II):
Ti a O b   (II),

where 1<=a<=20 and 1<=b<=30, optionally including a fractional part,
the first and second oxides of formulas (Ia) and (II) forming a polycrystalline matrix within the electrolyzer system.

2 . The system of claim 1 , wherein the polycrystalline matrix is porous.

3 . The system of claim 2 , wherein the porous polycrystalline matrix is structured as a catalyst support.

4 . The system of claim 1 , wherein Mg/Ti ratio is about 0.01-0.8.

5 . The system of claim 1 further comprising a porous transport layer (PTL) including the anticorrosive, conductive material.

6 . An electrochemical cell material comprising:
an anticorrosive, conductive polycrystalline matrix having:
a first metal oxide having oxygen vacancies and a formula (Ib):
Mg 1−x Ti 2+x O 5-δ   (Ib),

where
δ is any number between 0 and 3 including a fractional part denoting the oxygen vacancies, and 0<=x<=1; and
a second metal oxide having a formula (II):
Ti a O b   (II),

where 1<=a<=20 and 1<=b<=30, optionally including a fractional part,
the first and second oxides forming a polycrystalline matrix.

7 . The material of claim 6 , wherein the material is a porous microfiber.

8 . The material of claim 6 , wherein the matrix comprises sintered fibers.

9 . The material of claim 6 , wherein the fractional part in a, b, or both is included.

10 . The material of claim 6 , wherein the matrix forms a surface layer of a component in the electrochemical cell.

11 . The material of claim 6 , wherein the electrochemical cell is an electrolyzer.

12 . An electrochemical cell component comprising:
an anticorrosive, conductive, nonstoichiometric material having a first metal oxide having oxygen vacancies and a formula (Ib):
Mg 1−x Ti 2+x O 5-δ   (Ib),

where
δ is any number between 0 and 3 including a fractional part denoting the oxygen vacancies, and 0<=x<=1,
the Mg/Ti ratio in the material of the formula (Ib) is about 0.01 to about 0.8.

13 . The component of claim 12 , wherein the component is a bipolar plate.

14 . The component of claim 12 , wherein the component is a porous transport layer material.

15 . The component of claim 12 , wherein the electrochemical cell is an electrolyzer.

16 . The component of claim 12 , wherein the material has excess Ti such that 0<x<=1.

17 . The component of claim 12 , wherein the component is a catalyst support.

18 . The material of claim 6 , wherein 0<x<1.

19 . The material of claim 6 , wherein the Mg/Ti ratio in the material is about 0.01 to about 0.8.

20 . The material of claim 6 , wherein the polycrystalline matrix includes nanofibers with a diameter of about 10 to 250 nanometers.

Assignees

• Bosch Gmbh Robert

Inventors

• Kim Soo
• Berner Ulrich
• Gehrold Andreas
• Sauter Ulrich
• Cheng Lei
• Tuffile Charles

Classifications

• H01M4/9075

  Catalytic material supported on carriers, e.g. powder carriers (H01M4/8807, H01M4/881, H01M4/8814, H01M4/925 take precedence) · CPC title

• H01M4/9016

  Oxides, hydroxides or oxygenated metallic salts · CPC title

• C25B11/056

  consisting of textile or non-woven fabric · CPC title

• C25B11/069

  consisting of at least one single element and at least one compound; consisting of two or more compounds · CPC title

• C25B11/032

  Gas diffusion electrodes · CPC title