Dr. Stephan Wollstadt graduated from Technical University of Darmstadt in the field of Materials Science. His PhD thesis was focused on the development of fluorinated oxide materials for cathode applications in solid oxide fuel cells and other electrochemical systems. The easy to apply method of powder x-ray diffraction was a centerpiece of his thesis and with its help, he was able to perform insightful structural analysis and thermodynamic calculations. Stephan joind in early 2022 the application team of Rigaku Europe SE as a specialist for powder x-ray diffraction and Rietveld refinement.