Progress in metal corrosion mechanism and protective coating technology for interconnect and metal support of solid oxide cells

Solid oxide cell (SOC) is an important technology for hydrogen energy utilization. Durability and reliability of metal components including interconnect and metal support of metal-supported SOC are key requirements for the massive production of SOCs. Metal corrosion and electrode poisoning caused by...

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Bibliographic Details
Published in:Renewable & sustainable energy reviews 2023-10, Vol.185 (C), p.113597, Article 113597
Main Authors: Mao, Jingwen, Wang, Enhua, Wang, Hewu, Ouyang, Minggao, Chen, Youpeng, Hu, Haoran, Lu, Languang, Ren, Dongsheng, Liu, Yadi
Format: Article
Language:English
Subjects:
Coating process
Corrosion mechanism
Ferritic stainless steel
Metal support
Solid oxide electrolysis cell
Solid oxide fuel cell
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Summary:Solid oxide cell (SOC) is an important technology for hydrogen energy utilization. Durability and reliability of metal components including interconnect and metal support of metal-supported SOC are key requirements for the massive production of SOCs. Metal corrosion and electrode poisoning caused by elements diffusion under high-temperature working conditions are two main issues. This review concentrates on the anti-corrosion technology of interconnects and metal supports. First, the characteristics of stainless-steel materials commonly used in SOCs and the corrosion mechanisms under oxidizing, reducing, and dual atmospheres are introduced. Relevant elements interdiffusion and metal creep degradation are presented. Then, typical protective coating materials incorporating reactive element oxides, perovskites, and spinels are reviewed. Two composite coatings having a mixture or bilayer structure are discussed. Deposition processes involving electroplating, electrophoresis, magnetron sputtering, pulsed laser deposition, electron beam evaporation, screen printing, sol-gel coating, and plasma spraying are summarized and compared. Finally, challenges and future research directions are highlighted. •Corrosion mechanisms of FSSs for SOCs and alloy design are presented.•Progress in spinel, perovskite, and REO coating materials are estimated.•Electrodeposition, PVD, wet process, and plasma spray are compared.•Corrosion of metal support and coating methods in MS-SOC are discussed.
ISSN:1364-0321
1879-0690
DOI:10.1016/j.rser.2023.113597