Different types of corrosion resistant stainless steels, Ni-based alloys as well as titanium and tantalum were evaluated as a possible metallic bipolar plate and construction material with respect to corrosion resistance under simulated conditions corresponding to the conditions in high temperature proton exchange membrane (PEM) water electrolysers (HTPEMWE). All samples were exposed to anodic polarisation in 85% phosphoric acid electrolyte solution. Platinum and gold plates were tested for the valid comparison. Steady-state voltammetry was used in combination with scanning electron microscopy and energy-dispersive X-ray spectroscopy. Results show that stainless steels are the most inclined to corrosion under high anodic polarization. Among alloys, Ni-based showed the highest corrosion resistance under conditions, simulating HTPEMWE. In particular, Inconel625 is the most promising alloy for the anodic compartment of (HTPEMWE).
|Title of host publication||A book of extended abstracts of the 8th International Symposium on New Materials And Nano-Materials For Electrochemical Systems|
|Publication status||Published - 2010|
|Event||The 8th International Symposium on New Materials And Nano-Materials For Electrochemical Systems - |
Duration: 1 Jan 2010 → …
Conference number: 8
|Conference||The 8th International Symposium on New Materials And Nano-Materials For Electrochemical Systems|
|Period||01/01/2010 → …|