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Preparation, Evaluation, and Application of SUS430/441 Interconnect with Mn-Co Coating in Solid Oxide Fuel Cells

  • Tonghui Cui
  • , Fuyuan Liang
  • , Ruiting Sun
  • , Junwei Wu*
  • , Minfang Han*
  • , Kaihua Sun
  • , Yang Liu
  • *Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Mn-Co spinel is one of the most promising coatings for ferrite stainless steel interconnects. This study combines ex-situ and in-situ experiments, evaluating corrosion behavior and electrical performance of SUS430/441 interconnects with Mn-Co spinel coatings prepared by physical vapor deposition (PVD) in air. The ex-situ area-specific resistance (ASR) test indicated that the ASR growth rate of the coated sample at 750 was 0.37%/kh, suggesting good corrosion resistance. Under actual operating conditions, the stack with a Mn-Co spinel coating and heat treatment had the lowest ohmic resistance growth rate and performance degradation rate. Thus, a Mn-Co spinel coating applied to the cathode side of the interconnect by PVD can efficiently improve stack stability. Meanwhile, heat treatment at the initial operation of stacks is beneficial to the formation of the Mn-Co coating and the elimination of Cr diffusion.

Original languageEnglish
Title of host publication17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021
PublisherIOP Publishing Ltd.
Pages1713-1721
Number of pages9
Edition1
ISBN (Electronic)9781607685395
DOIs
StatePublished - 2021
Externally publishedYes
Event17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021 - Stockholm, Sweden
Duration: 18 Jul 202123 Jul 2021

Publication series

NameECS Transactions
Number1
Volume103
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Conference

Conference17th International Symposium on Solid Oxide Fuel Cells, SOFC 2021
Country/TerritorySweden
CityStockholm
Period18/07/2123/07/21

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