# US 8,465,797 B2 · Method to fabricate high performance tubular solid oxide fuel cells

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- Number: US 8,465,797 B2
- Document ID: US8465797B2
- Status: Granted
- Kind: B2
- Application number: 13/008,081
- Filed: 2011-01-18
- Published: 2011-07-21
- Granted: 2013-06-18
- Earliest claimed: 2010-01-15
- Assignees: University of South Carolina
- Applicants: Fanglin Chen; Chenghao Yang; Chao Jin
- Inventors: Fanglin Chen; Chenghao Yang; Chao Jin
- Web page: https://patentgrep.com/patent/US8465797B2

## CPC

- H01M 8/1213: characterised by the electrode/electrolyte combination or the supporting material
- Y02E 60/50: Fuel cells
- 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

## Abstract

In accordance with the present disclosure, a method for fabricating a solid oxide fuel cell is described. The method includes forming an asymmetric porous ceramic tube by using a phase inversion process. The method further includes forming an asymmetric porous ceramic layer on a surface of the asymmetric porous ceramic tube by using a phase inversion process. The tube is co-sintered to form a structure having a first porous layer, a second porous layer, and a dense layer positioned therebetween.

## Claims

### Claim 1

A method for fabricating a solid oxide fuel cell comprising:
forming an asymmetric porous ceramic tube by using a phase inversion process;
forming an asymmetric porous ceramic layer on an inner surface of the asymmetric porous ceramic tube by using a phase inversion process in the presence of water; and
co-sintering the tube to form a structure having a first porous layer, a second porous layer, and a dense layer positioned therebetween.

### Claim 2 (depends on 1)

The method of claim 1, wherein the tube comprises electrolyte material.

### Claim 3 (depends on 1)

The method of claim 1, wherein one or more of the porous layers comprise a catalyst.

### Claim 4 (depends on 1)

The method of claim 1, wherein the tube is co-sintered at a temperature of greater than about 1000° C.

### Claim 5 (depends on 1)

The method of claim 1, wherein the tube is co-sintered at a temperature of greater than about 1100° C.

### Claim 6 (depends on 1)

The method of claim 1, wherein the tube is co-sintered at a temperature of greater than about 1200° C.