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Title of article :
Evaluation of a new Cr-free alloy as interconnect material for hydrogen production by high temperature water vapour electrolysis: Study in cathode atmosphere
Author/Authors :
Ardigٍ، نويسنده , , M.R. and Popa، نويسنده , , I. and Chevalier، نويسنده , , S. and Desgranges، نويسنده , , C. and Bousquet، نويسنده , , R.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2012
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Abstract :
For economic and ecological reasons, hydrogen is considered as a major energetic vector for the future. Hydrogen production via high temperature water vapour electrolysis (HTE) is a promising technology. A major technical difficulty related to high temperature water vapour electrolysis is the development of interconnects working efficiently for a long period. Working temperature of 800 °C enables the use of metallic materials as interconnects. High temperature corrosion behaviour and electrical conductivity of a new Cr-free Fe–Ni–Co alloy were tested in cathode atmosphere (H2/H2O) at 800 °C. The alloy exhibits a poor oxidation resistance but an excellent ASR parameter, as a result of the formation of a highly-conductive Cr-free surface spinel layer. Moreover, the role of water vapour and hydrogen was discussed and a diffusion mechanism in cathode atmosphere could be suggested.
Keywords :
High temperature electrolysis , Interconnect , Fe–Ni–Co alloy , Corrosion behaviour , electrical conductivity
Journal title :
International Journal of Hydrogen Energy
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