A new 100 W laboratory XAFS spectrometer was successfully commissioned in the Fittschen lab. On May the second the easyXES100-extended was installed in the Material-analysis group at the IAAC. It is one of seven (e.g. MPI-CEC, PSI, HIU Ulm) now installed all over the world. It allows to study elemental species in materials with poor crystallinity in the laboratory; which was previously an exclusive Synchrotron capacity. First of our measurements revealed species information on Vanadium oxidation state in Vanadium Redoxflow Batteries electrolyte. We will extend our studies to determine V species in the solid state components of the battery i.e. the ion exchange membrane and the electrodes.
Picture below: easyXES-extended at the Fittschen laboratory, from right: Dr. Devon Mortensen, Prof. Dr. Fittschen, Andreas Fittschen; graphs: Xanes spectra from the negative electrolyte (left) and the positive electrolyte (right). The energy scale was not normalized.
