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X-ray Imaging and Microspectroscopy Study of Metallic Plate Corrosion and Uptake of Corrosion Products by Nafion in PEMFCs
| Room-temperature ionic liquids are being intensively investigated as green solvents for several applications, but relatively limited research has been devoted to the stability of metals in contact with them. This paper reports a pioneering investigation of the corrosion of Ni in contact with room-temperature ionic liquid (RTIL) 1-butyl-1-methyl-pyrrolidinium bis (trifluoromethylsulfonyl) amide ([BMP][TFSA]), based on soft X-ray scanning transmission microscopy (STXM) - in conjunction with micro-spot X-ray absorption spectroscopy (XAS) and X-ray Fluorescence spectroscopy (XRF). X-ray imaging combined with spectromicroscopy allows in-situ characterisation of complex multi-material systems in electrochemical environments with submicrometer lateral resolution.1-5 Thanks to the properties of this RTIL, an open electrochemical cell could be used in vacuo for exploring some fundamental aspects of the aggressiveness of this RTIL towards Ni under in-situ electrochemical polarisation. |
The possibility of imaging electrochemicallyinduced morphological features in conjunction with local XAS and XRF spectroscopies, yields details of the space distribution and chemical state of the corrosion products.
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Corrosion of Ni in 1-butyl-1-methyl-pyrrolidinium bis (trifluoromethylsulfonyl) amide room-temperature ionic liquid: an in-situ X-ray imaging and spectromicroscopy study; |
Last Updated on Wednesday, 13 December 2023 17:27
