Dresden 2026 – scientific programme
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FM: Fachverband Funktionsmaterialien
FM 6: Focus Session: Materials Discovery I – Material informatics
FM 6.7: Talk
Tuesday, March 10, 2026, 11:30–11:45, BEY/0138
Exploration of high-entropy alloys for key electrochemical reactions: a comparative study for the solid solution systems X-Pd-Pt-Ru (X=Cu, Ir, Ni) — •Jan Lukas Bürgel1, Rico Zehl1, Felix Thelen1, Ridha Zerdoumi1, 2, Olga A. Krysiak2, Benedikt Kohnen1, Ellen Suhr1, Wolfgang Schuhmann2, and Alfred Ludwig1 — 1Chair for Materials Discovery and Interfaces, Institute for Materials, Faculty of Mechanical Engineering, Ruhr University Bochum, Bochum, Germany — 2Analytical Chemistry - Center for Electrochemical Sciences (CES), Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum, Germany
Developing new electrocatalysts is essential for green energy technologies such as hydrogen production, fuel cells, and environmental remediation. Compositionally complex solid solutions offer vast opportunities for catalyst discovery due to their tunable surface sites, but exploring their large compositional spaces requires optimised strategies. Using a high-throughput approach, the electrocatalytic activity of the three quaternary systems X-Pd-Pt-Ru (X = Cu, Ir, Ni) was screened for four reactions in alkaline media: oxygen evolution, oxygen reduction, hydrogen evolution, and nitrate reduction reaction. Thin-film materials libraries were synthesised and characterised to identify composition-activity relationships, while also considering relevant information on crystal structure and surface morphology. The resulting multidimensional dataset reveals clear trends, similarities, and distinct activity maxima, demonstrating the effectiveness of this approach for navigating complex multinary systems.
Keywords: High-throughput; Electrocatalysis; Compositionally complex solid solution; Thin film