Corrosion behavior of construction materials for intermediate temperature steam electrolysers

Aleksey Nikiforov, Irina Petrushina, Jens Oluf Jensen, Niels J. Bjerrum

Research output: Contribution to journalConference articleResearchpeer-review

Abstract

Different corrosion resistant stainless steels, nickel-based alloys, pure nickel, Ta-coated stainless steel (AISI 316L), niobium, platinum and gold rods were evaluated as possible materials for use in the intermediate temperature (200-400 °C) acidic water electrolysers. The corrosion resistance was measured under simulated conditions (molten KH2PO4) corresponding to the proton-conducting solid acids or transition metal phosphates as electrolytes. It was shown that, unlike at temperatures below 200 °C, gold is unstable with respect to corrosion in molten KH2PO4. Platinum demonstrated high corrosion resistance and the anodic and cathodic limits were for the first time found for the electrolyte. Nickel, niobium, Inconel®625, Hastelloy®C-276 and Ta-coated stainless steel (AISI 316L) demonstrated high corrosion stability and can be recommended as construction materials for bipolar plates. © (2013) Trans Tech Publications, Switzerland.
Original languageEnglish
JournalAdvanced Materials Research
Volume699
Pages (from-to)596-605
ISSN1022-6680
DOIs
Publication statusPublished - 2013
Event 2013 International Conference on Materials Science and Chemical Engineering (MSCE 2013) - Singapore, Singapore
Duration: 20 Feb 201321 Feb 2013

Conference

Conference 2013 International Conference on Materials Science and Chemical Engineering (MSCE 2013)
CountrySingapore
CitySingapore
Period20/02/201321/02/2013

Keywords

  • Chemical engineering
  • Coated materials
  • Corrosion
  • Gold
  • Gold coatings
  • Materials science
  • Nickel
  • Niobium
  • Platinum
  • Solid electrolytes
  • Stainless steel
  • Corrosion resistance

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