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Solid oxide fuel cell

專利號(hào)
US10868323B2
公開日期
2020-12-15
申請人
LG CHEM, LTD.（KR Seoul）
發(fā)明人
Sanghyeok Im; Yeonhyuk Heo; Tai Min Noh; Kwangyeon Park; Kwangwook Choi
IPC分類
H01M8/1226; H01M8/2483; H01M8/0215; H01M8/2485; H01M8/0276; H01M8/0273; H01M8/2432; H01M8/124; H01M8/0282
技術(shù)領(lǐng)域
fuel,sealant,cell,passage,electrode,ceramics,gas,layer,support,oxide
地域： Seoul

摘要

A solid oxide fuel cell, and more particularly, a thin and light solid oxide fuel cell has a sealant layer in which a passage through which fuel and air may flow in and out. A support is located on an inner wall of the passage to prevent the blockage of the passage due to flow generated in the sealant layer at a high temperature. A window frame is omitted to simplify a configuration.

說明書

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
TECHNICAL FIELD

This application claims priority to and the benefit of Korean Patent Application No. 10-2016-0103733 filed in the Korean Intellectual Property Office on Aug. 16, 2016, the entire contents of which are incorporated herein by reference.

The present invention relates to a solid oxide fuel cell, and more particularly, to a thin and light solid oxide fuel cell in which a passage through which fuel and air may flow in and out is formed in a sealant layer and a support is located on an inner wall of the passage to prevent the blockage of the passage due to a flowage generated in the sealant layer at a high temperature and a window frame is omitted to simplify a configuration.

BACKGROUND ART

A fuel cell is a device which directly produces electricity through an electrochemical reaction of hydrogen and oxygen in the air, and is an energy source which is eco-friendly, has high energy efficiency, and has high value added through technology development. Specifically, a solid oxide fuel cell which is a third-generation fuel cell does not need a complex external reforming system as compared with other fuel cells, does not use a noble metal electrode catalyst such as platinum, and is not corroded due to a liquid electrolyte, and as a result, the solid oxide fuel cell has advantages in that it is possible to minimize various operating problems caused in a low temperature fuel cell to maintain an operating temperature through appropriate insulation at the time of high temperature operation and to use various fuels.

權(quán)利要求

1
The invention claimed is:1. A solid oxide fuel cell, comprising:a unit cell;a sealant layer which encloses a periphery of the unit cell; anda plurality of interconnects located above and below the sealant layer, each of the plurality of interconnects having one or more fuel manifolds and one or more gas manifolds,wherein in the sealant layer, one or more fuel passages and one or more gas passages are formed, and the sealant layer includes a support which is supported in at least a part of inner sides of the one or more fuel passages and the one or more gas passages, andwherein the support is made of a material having less flowability than the sealant layer.2. The solid oxide fuel cell of claim 1, wherein the support is formed of ceramic having a high electrical resistivity.3. The solid oxide fuel cell of claim 2, wherein the ceramic is one or more selected from the group consisting of silicon nitride ceramics, silicon carbide ceramics, sialon ceramics, alumina ceramics, zirconia ceramics, bio ceramics, titania ceramics, BaTiO3 ceramics, SrTiO3 ceramics, silica ceramics, cordierite ceramics, mica ceramics, SiO ceramics, and SiAu4 ceramics.4. The solid oxide fuel cell of claim 1, wherein the support is extendable in an upper direction and a lower direction.5. The solid oxide fuel cell of claim 1, wherein the support includes:a fuel support located inside the one or more fuel passages; anda gas support located on an inner wall of the one or more gas passages,wherein the fuel support and the gas support have different shapes.6. The solid oxide fuel cell of claim 5, wherein the fuel support encloses the inner side of the fuel passage.7. The solid oxide fuel cell of claim 5, wherein the gas support encloses the inner side of the gas passage.8. The solid oxide fuel cell of claim 1, wherein the sealant layer is formed of glass or crystalized glass.9. The solid oxide fuel cell of claim 1, wherein the interconnects include:an air electrode interconnect in which reaction gas is supplied and a flow passage corresponding to a size of the unit cell is formed; anda fuel electrode interconnect in which fuel is supplied and a flow passage corresponding to a size of the unit cell is formed.10. The solid oxide fuel cell of claim 1, further comprising:a current collector between the sealant layer and each of the interconnects.11. The solid oxide fuel cell of claim 2, wherein the sealant layer is formed of glass or crystalized glass.
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