# US 10,320,006 B2 · Interconnect including lattice-type conductive core, oxidation-resistant insulating part, and oxidation-resistant conductive material layer for solid oxide fuel cell and method for manufacturing the same

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- Number: US 10,320,006 B2
- Document ID: US10320006B2
- Status: Granted
- Kind: B2
- Application number: 15/341,460
- Filed: 2016-11-02
- Published: 2017-03-16
- Granted: 2019-06-11
- Earliest claimed: 2012-12-21
- Assignees: Samsung Electro-Mechanics Co., Ltd.
- Applicants: Samsung Electro-Mechanics Co., Ltd.
- Inventors: Sung Han Kim; Jong Ho Chung; Jong Sik Yoon; Bon Seok Koo
- Web page: https://patentgrep.com/patent/US10320006B2

## CPC

- H01M 8/0228: in the form of layered or coated products
- C04B 37/021: {in a direct manner, e.g. direct copper bonding [DCB]}
- H01M 8/0206: Metals or alloys
- H01M 8/0215: Glass; Ceramic materials
- C04B 2237/066: based on rare earth oxides
- C04B 2237/068: based on refractory oxides, e.g. zirconia
- C04B 2237/62: Forming laminates or joined articles comprising holes, channels or other types of openings
- C04B 2237/68: Forming laminates or joining articles wherein at least one substrate contains at least two different parts of macro-size, e.g. one ceramic substrate layer containing an embedded conductor or electrode
- 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
- C04B: LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE {(roofing granules E04D7/005)}; CERAMICS (devitrified glass-ceramics C03C10/00); REFRACTORIES; TREATMENT OF NATURAL STONE
- 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

Disclosed herein are an interconnect for a solid oxide fuel cell and a method for manufacturing the same, the interconnect including: a conductive core; an oxidation-resistant insulating part receiving therein; and an oxidation-resistant conductive material layer coated on an exposed surface of the conductive core, which is exposed to an external environment by removing a portion of the oxidation-resistant insulating part, so that the interconnect can maintain durability against high-temperature heat generated from a flat type solid oxide fuel cell for a long time and thus have a very small voltage loss due to oxidation even with the use over a long-time period; have no sealing problem and no delaminating problem of a coating film due to a difference in coefficient of thermal expansion; be inexpensive; and have a simple structure.

## Claims

### Claim 1

A method for manufacturing an interconnect for a solid oxide fuel cell, the method comprising:
forming a conductive core in a form of a lattice type plate having a plurality of hollow portions by sintering-molding a conductive powder having a melting point of 1000° C. or higher;
molding an oxidation-resistant insulating part by wrapping the conductive core in an oxidation-resistant insulating ceramic powder to fill the hollow portions with the oxidation-resistant insulating ceramic powder, followed by sintering;
exposing the conductive core to an external environment by mechanically processing a portion of the oxidation-resistant insulating part to expose a portion of the conductive core, which is to be connected with an electrode of the fuel cell; and
coating an oxidation-resistant conductive material layer on an exposed portion of the conductive core by coating an oxidation-resistant conductive material on the exposed portion of the conductive core.

### Claim 2 (depends on 1)

The method as set forth in claim 1, further comprising, before the molding of the oxidation-resistant insulating part, forming a middle layer by coating a mixture of the conductive powder and the oxidation-resistant insulating ceramic powder on a surface of the conductive core.

### Claim 3 (depends on 1)

The method as set forth in claim 1, wherein in the exposing of the conductive core, the portion of the oxidation-resistant insulating part is removed through a polishing process.

### Claim 4 (depends on 1)

The method as set forth in claim 1, wherein in the coating of the oxidation-resistant conductive material layer, the oxidation-resistant conductive material layer is coated on the exposed portion of the conductive core in a deposition manner.

### Claim 5 (depends on 4)

The method as set forth in claim 4, wherein the oxidation-resistant conductive material to be deposited used in a lamination manner includes noble metals.