Performance recovery of sulfur poisoning anode and prevention of sulfur poisoning by shifting anode potential for solid oxide fuel cell

Yuki Yamada, Ryosuke Okubo, Masahiro Kinoshita, Masashi Yoshinaga, Eiki Niwa, Takuya Hashimoto, Keita Tomomichi, Kazuya Sasaki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The possibility of performance recovery of the sulfurated Ni-yttria stabilized zirconia anode by shifting the anode potential to the stable region, in which nickel exists as metal, is investigated. The effect of controlling the potential of the anode to the stable region to suppress the generation of nickel sulfide is also revealed. The surface of Ni particle reacts with sulfur to form Ni3S2 in a low temperature region; however, the nickel is reduced to metallic by shifting the electrode potential to -1.9 V vs reference electrode exposed to O2. When the potential of the Ni-based anode is maintained at the value of ≤ -1.9 V vs the reference electrode potential, the sulfidation of nickel is inhibited.

Original languageEnglish
Title of host publicationSolid Oxide Fuel Cells 14, SOFC 2015
EditorsK. Eguchi, S. C. Singhal
PublisherElectrochemical Society Inc.
Pages1391-1401
Number of pages11
Edition1
ISBN (Electronic)9781607685395
DOIs
Publication statusPublished - 2015
Externally publishedYes
Event14th International Symposium on Solid Oxide Fuel Cells, SOFC 2015; held as part of the Electrochemical Society, ECS Conference on Electrochemical Energy Conversion and Storage - Glasgow, United Kingdom
Duration: Jul 26 2015Jul 31 2015

Publication series

NameECS Transactions
Number1
Volume68
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

Other14th International Symposium on Solid Oxide Fuel Cells, SOFC 2015; held as part of the Electrochemical Society, ECS Conference on Electrochemical Energy Conversion and Storage
CountryUnited Kingdom
CityGlasgow
Period7/26/157/31/15

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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