# US 8,771,898 B2 · Arrangement of components in a solid oxide fuel cell and manufacturing method thereof

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- Number: US 8,771,898 B2
- Document ID: US8771898B2
- Status: Granted
- Kind: B2
- Application number: 12/752,700
- Filed: 2010-04-01
- Published: 2011-02-03
- Granted: 2014-07-08
- Earliest claimed: 2009-07-29
- Assignees: TDK Corporation; Tohoku University
- Applicants: Kei Sugiura; Atsushi Hitomi; Takeshi Urano; Hitoshi Takamura
- Inventors: Kei Sugiura; Atsushi Hitomi; Takeshi Urano; Hitoshi Takamura
- Web page: https://patentgrep.com/patent/US8771898B2

## CPC

- H01M 8/2432: Grouping of unit cells of planar configuration
- H01M 4/881: {Electrolytic membranes}
- H01M 4/8828: {Coating with slurry or ink}
- H01M 4/8889: {Cosintering or cofiring of a catalytic active layer with another type of layer}
- H01M 4/8896: {Pressing, rolling, calendering (membrane electrode assemblies H01M8/1004)}
- H01M 4/9025: {Oxides specially used in fuel cell operating at high temperature, e.g. SOFC}
- H01M 4/9066: {of metal-ceramic composites or mixtures, e.g. cermets}
- H01M 8/04089: of gaseous reactants
- H01M 8/1246: the electrolyte consisting of oxides
- H01M 8/2457: with both reactants being gaseous or vaporised
- H01M 4/8814: {Temporary supports, e.g. decal}
- H01M 8/1253: the electrolyte containing zirconium oxide
- H01M 8/126: the electrolyte containing cerium oxide
- 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

Described herein are solid oxide fuel cells and manufacturing methods thereof. In certain aspects, the solid oxide fuel cells described herein include a plurality of anodes and a plurality of cathodes in which the anodes and cathodes are alternately stacked on each other and have non-overlapping sections in which the anodes and cathodes do not overlap partially. In certain aspects, the plurality of anodes are electrically connected to a first electrode, and the plurality of cathodes are electrically connected to a second electrode. In certain aspects, a solid electrolyte can be included, for example, between the anode and the cathode. In certain aspects, partitioning sections are disposed between each of the cathodes and the first electrode and between each of the anodes and the second electrode.

## Claims

### Claim 1

A solid oxide fuel cell, comprising:
a plurality of solid electrolytes;
a plurality of anodes sandwiched by each of the plurality of solid electrolytes and a plurality of cathodes sandwiched by each of the plurality of solid electrolytes, the plurality of anodes and the plurality of cathodes being alternately stacked on each other in a stacked direction, and
a plurality of first partitioning sections sandwiched by each of the plurality of solid electrolytes and a plurality of second partitioning sections sandwiched by each of the plurality of solid electrolytes, the plurality of first and second of partitioning sections being alternately stacked on each other in the stacked direction and being staggered in a direction perpendicular to the stacked direction,
wherein
each of the plurality of anodes has one end exposed and another end contacting a corresponding first partitioning section in the direction perpendicular to the stacked direction,
each of the plurality of cathodes has one end contacting a corresponding second partitioning section and another end exposed in the direction perpendicular to the stacked direction,
fuel is supplied from the exposed one ends of the plurality of anodes towards the another ends of the plurality of anodes,
air is supplied from the exposed another ends of the plurality of cathodes towards the one ends of the plurality of cathodes, and
the supplying directions of the fuel and air are opposed to each other so that the fuel and air flow countercurrent to each other throughout the solid oxide fuel cell.

### Claim 2 (depends on 1)

The solid oxide fuel cell according to claim 1, wherein each of the plurality of first and second partitioning sections is made of the same material as each of the plurality of solid electrolytes.

### Claim 3 (depends on 1)

The solid oxide fuel cell according to claim 1, wherein each of the plurality of first and second partitioning sections is made of a material having electronic conductivity lower than each of the plurality of solid electrolytes.

### Claim 4 (depends on 1)

The solid oxide fuel cell according to claim 1, wherein the plurality of anodes and/or the plurality of cathodes are porous.

### Claim 5 (depends on 1)

The solid oxide fuel cell according to claim 1, wherein a gas passage is installed inside at least one of the plurality of anodes and the plurality of cathodes.

### Claim 6

A solid oxide fuel cell, comprising:
a plurality of solid electrolytes;
a plurality of anodes sandwiched by each of the plurality of solid electrolytes and a plurality of cathodes sandwiched by each of the plurality of solid electrolytes, the plurality of anodes and the plurality of cathodes being alternatively stacked on each other in a stacked direction;
a plurality of first partitioning sections sandwiched by each of the plurality of solid electrolytes and a plurality of second partitioning sections sandwiched by each of the plurality of solid electrolytes, the plurality of first and second partitioning sections being alternatively stacked on each other in the stacked direction and being staggered in a direction perpendicular to the stacked direction,
a first electrode electrically connected to the plurality of anodes; and
a second electrode electrically connected to the plurality of cathodes and provided on an opposite side of the first electrode in the direction perpendicular to the stacked direction,
wherein
each of the plurality of anodes has one end exposed and another end contacting a corresponding first partitioning section in the direction perpendicular to the stacked direction,
each of the plurality of cathodes has one end contacting a corresponding second partitioning section and another end exposed in the direction perpendicular to the stacked direction, and
fuel is supplied from a side of the first electrode and air is supplied from a side of the second electrode.

### Claim 7 (depends on 6)

The solid oxide fuel cell according to claim 6, wherein each of the plurality of first partitioning sections connects the solid electrolytes which are adjacent to each other via each of the plurality of anodes and each of the plurality of second partitioning sections connects the solid electrolytes which are adjacent to each other via each of the plurality of cathodes.

### Claim 8 (depends on 6)

The solid oxide fuel cell according to claim 6, wherein each of the plurality of first and second partitioning sections is made of the same material as each of the plurality of solid electrolytes.

### Claim 9 (depends on 6)

The solid oxide fuel cell according to claim 6, wherein each of the plurality of first and second partitioning sections is made of a material having electronic conductivity lower than each of the plurality of solid electrolytes.

### Claim 10 (depends on 6)

The solid oxide fuel cell according to claim 6, wherein the plurality of anodes and/or the plurality of cathodes are porous.

### Claim 11 (depends on 6)

The solid oxide fuel cell according to claim 6, wherein a gas passage is installed inside at least one of the plurality of anodes and the plurality of cathodes.