US 2022/0393185 A1 · ELECTRICAL CONTACT MATERIAL FOR INTEGRATION AS A CONTACT LAYER IN A REVERSIBLE SOLID-OXIDE FUEL CELL

Abstract

One variation of a contact material includes: a base material including a first amount of Lanthanum, a second amount of Nickel, and a third amount of Oxygen; a fourth amount of a first doping agent configured to stabilize a crystal structure of the base material; and a fifth amount of a second doping agent, in the set of doping agents, configured to limit thermal expansion of the base material. The contact material exhibits: a thermal expansion coefficient between 10.0×10−6K−1 and 15.0×10−6K−1 at temperatures between 25 degrees Celsius and 1100 degrees Celsius; and an electrical conductivity greater than 200 Siemens-per-centimeter at temperatures within a temperature range of 700 degrees Celsius to 1300 degrees Celsius.

Claims20

Dependent claims

A contact material:

comprising:
a base material comprising a first amount of Lanthanum, a second amount of Nickel, and a third amount of Oxygen;
a fourth amount of a first doping agent configured to stabilize a crystal structure of the base material;
and
a fifth amount of a second doping agent, in the set of doping agents, configured to reduce a thermal expansion coefficient of the base material;
and
exhibiting:
a thermal expansion coefficient between 10.0×10−6K−1 and 15.0×10−6K−1 at temperatures between 25 degrees Celsius and 1100 degrees Celsius;
and
an electrical conductivity greater than 200 Siemens-per-centimeter at temperatures within a temperature range of 700 degrees Celsius to 1300 degrees Celsius.

7 more elements

A contact material:

comprising:
a base material comprising:
a first amount of Lanthanum;
a second amount of Nickel;
and
a fourth amount of Oxygen;
a third amount of Iron configured to stabilize the base material;
and
a fifth amount of a doping agent configured to limit thermal expansion of the base material;
and
exhibiting:
a thermal expansion coefficient between 10.0×10−6K−1 and 15.0×10−6K−1 at temperatures between 25 degrees Celsius and 1100 degrees Celsius;
and
an electrical conductivity value greater than 200 Siemens-per-centimeter at temperatures within a temperature range of 700 degrees Celsius to 1300 degrees Celsius.

11 more elements

A contact material:

comprising:
a base material comprising:
a first amount of Lanthanum;
a second amount of Nickel;
and
a fourth amount of Oxygen;
a third amount of Cobalt configured to stabilize the base material;
and
a fifth amount of a doping agent configured to limit thermal expansion of the base material;
and
exhibiting:
electrical conductivity values greater than 300 Siemens-per-centimeter at temperatures within a temperature range of 700 degrees Celsius to 1300 degrees Celsius;
and
a target thermal expansion coefficient within a threshold deviation of:
a first thermal expansion coefficient of an electrode material;
and
a second thermal expansion coefficient of an interconnect material.

14 more elements

Dependencies are inferred from the claim text.

Facts

Application

17/828,996Filed 31 May 2022

Priority

28 May 2021

Published

8 Dec 2022

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

H01M 4/9033
Oxides specially used in fuel cell operating at high temperature, e.g. SOFC: complex oxides, optionally doped, of the type M1MeO3, M1 being an…
H01M 4/8885
Heat treatment, e.g. drying, baking: sintering or firing
H01M 8/1213
Operating at high temperature, e.g. with stabilised ZrO2 electrolyte: characterised by the electrode/electrolyte combination or the supporting…
H01M 8/243
High-temperature cells with solid electrolytes: grouping of unit cells of tubular or cylindrical configuration

Electrical contact material for integration as a contact layer in a reversible solid-oxide fuel cell

Life of this patent

Electrical contact material for integration as a contact layer in a reversible solid-oxide fuel cell

Life of this patent

Abstract

Claims20