# US 10,483,578 B2 · Method for manufacturing anode support of solid oxide fuel cell, and anode support of solid oxide fuel cell

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- Number: US 10,483,578 B2
- Document ID: US10483578B2
- Status: Granted
- Kind: B2
- Application number: 14/910,574
- Filed: 2014-10-02
- Published: 2016-07-21
- Granted: 2019-11-19
- Earliest claimed: 2013-10-02
- Assignees: LG Chem, Ltd.
- Applicants: LG Chem, Ltd.
- Inventors: Yeonhyuk Heo; Kwangwook Choi; Jongjin Lee; Takkeun Oh; Bu Won Son
- Web page: https://patentgrep.com/patent/US10483578B2

## CPC

- H01M 8/1226: characterised by the supporting layer
- H01M 4/8803: {Supports for the deposition of the catalytic active composition (H01M4/90 takes precedence)}
- H01M 4/8817: {Treatment of supports before application of the catalytic active composition (coated porous composites H01M8/0245)}
- H01M 4/8878: {Treatment steps after deposition of the catalytic active composition or after shaping of the electrode being free-standing body}
- H01M 4/9066: {of metal-ceramic composites or mixtures, e.g. cermets}
- H01M 8/0236: Glass; Ceramics; Cermets
- H01M 8/1213: characterised by the electrode/electrolyte combination or the supporting material
- H01M 8/1246: the electrolyte consisting of oxides
- H01M 2008/1293: {Fuel cells with solid oxide electrolytes}
- Y02E 60/50: Fuel cells
- 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

The present application relates to a method of manufacturing an anode support of a solid oxide fuel cell and an anode support of a solid oxide fuel cell, and may improve performance and durability of the fuel cell by improving an interfacial property between the anode support and an electrolyte.

## Claims

### Claim 1

An anode support of a solid oxide fuel cell comprising:
a structure of a metal and an inorganic oxide having oxygen ion conductivity, the structure having a treated portion and a non-treated portion, the treated portion including a surface of the anode support that contacts an electrolyte, the structure being prepared by a press and sinter operation,
wherein the surface of the treated portion that contacts the electrolyte has a plurality of pores such that the surface of the treated portion has a porosity of from 5% to 50%, each of the pores having a size from 0.1 micrometers to 1 millimeter, and
wherein the treated portion occupies from 5% to 50% of a total volume of the anode support and comprises the inorganic oxide, and
wherein the treated portion is a portion that has been treated by removing the metal using an acid.

### Claim 2 (depends on 1)

The anode support of claim 1, wherein a roughness of the surface of the treated portion that contacts the electrolyte is 200 nanometers or more and 1,000 nanometers or less.

### Claim 3 (depends on 1)

The anode support of claim 1, wherein an area specific resistance (ASR) of the surface of the treated portion that contacts the electrolyte is 0.01 Ωcm2 or more and 0.5 Ωcm2 or less.

### Claim 4 (depends on 1)

The anode support of claim 1, wherein the porosity of the surface of the treated portion that contacts the electrolyte is from 35% to 50%.

### Claim 5 (depends on 1)

The anode support of claim 1, wherein the treated portion occupies from 35% to 50% of the total volume of the anode support.

### Claim 6 (depends on 1)

A method of manufacturing a solid oxide fuel cell, the method comprising:
preparing the anode support of claim 1; and
applying an inorganic oxide having ion conductivity on the treated surface of the treated portion the anode support to form the electrolyte.

### Claim 7 (depends on 6)

The method of claim 6, wherein the inorganic oxide included in the electrolyte is the same as the inorganic oxide included in the anode support.

### Claim 8 (depends on 1)

A solid oxide fuel cell comprising:
the anode support of claim 1;
a cathode positioned to face the anode support; and
the electrolyte positioned between the anode support and the cathode.

### Claim 9 (depends on 8)

The solid oxide fuel cell of claim 8, wherein a power density continuously increases according to current density across an entire range from 1.0 to 2.0 A/cm2.