Invention Grant
US09276272B2 Metal separator for solid oxide regenerative fuel cell coated with conductive spinel oxide film, method for producing the same and solid oxide regenerative fuel cell including the same
有权
用导电尖晶石氧化物膜涂覆的固体氧化物再生式燃料电池的金属隔膜,其制造方法和包含该氧化物的固体氧化物再生式燃料电池
- Patent Title: Metal separator for solid oxide regenerative fuel cell coated with conductive spinel oxide film, method for producing the same and solid oxide regenerative fuel cell including the same
- Patent Title (中): 用导电尖晶石氧化物膜涂覆的固体氧化物再生式燃料电池的金属隔膜,其制造方法和包含该氧化物的固体氧化物再生式燃料电池
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Application No.: US14153250Application Date: 2014-01-13
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Publication No.: US09276272B2Publication Date: 2016-03-01
- Inventor: Sung-Il Lee , Ji-Won Son , Jong Ho Lee , Hae June Je , Kyung Joong Yoon , Hae-Weon Lee , Byung Kook Kim
- Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
- Applicant Address: KR Seoul
- Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
- Current Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
- Current Assignee Address: KR Seoul
- Agency: Ladas & Parry LLP
- Priority: KR10-2013-0129890 20131030
- Main IPC: H01M8/02
- IPC: H01M8/02

Abstract:
Disclosed is a metal separator for a solid oxide regenerative fuel cell coated with a conductive spinel oxide film. In the conductive spinel oxide film, yttrium is added to a manganese-cobalt spinel oxide to suppress growth of an insulating oxide film on the surface of the metal separator and volatilization of metal. In the conductive oxide film coated on the metal separator, yttrium is segregated at the grain boundaries of the spinel so that migration of oxygen through the grain boundaries can be suppressed. Therefore, the surface of the metal separator can be protected from exposure to the atmosphere and water vapor when the solid oxide regenerative fuel cell is operated at high temperature. In addition, poisoning of electrodes by metal volatilization from the surface of the metal separator and growth of an insulating oxide film on the surface of the metal separator can be prevented. Therefore, the stability of the solid oxide regenerative fuel cell stack can be markedly improved.
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