کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1275315 | 1497559 | 2012 | 8 صفحه PDF | دانلود رایگان |
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.
► A new Cr-free Fe–Ni–Co alloy as interconnect material for water steam electrolysis.
► Corrosion and conductivity tests in cathode atmosphere (H2/H2O) at 800°°C.
► Poor oxidation resistance, but excellent ASR parameter.
► The role of water vapour and hydrogen is discussed.
► A diffusion mechanism is suggested.
Journal: International Journal of Hydrogen Energy - Volume 37, Issue 10, May 2012, Pages 8177–8184