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Cantor Entropy Alloys for Hydrogen Evolution Reaction

Barbara Ljubec B., Institut Jožef Stefan

Tuesday, 20. 01. 2026 at 13:00, at the Kolar lecture hall

Abstract:

What if hydrogen evolution catalysts could be designed without relying on scarce and expensive noble metals? Entropy stabilized alloys (ESA) offer a promising pathway toward this goal. By combining multiple transition metals into a single and entropy stabilized structure, ESA enable new strategies for tuning catalytic activity and stability in the hydrogen evolution reaction (HER).

In this seminar, I will present our work on the synthesis, physicochemical characterization, and electrocatalytic evaluation of various Cantor type ESAs (CoFeNi, CoFeNiMn, CoFeNiCr and CoFeNiMnCr) for the HER in both alkaline and acidic Environments. The seminar will systematically explore the relationships between physicochemical properties (such as chemical composition, phase structure, and microstructure) and electrocatalytic activity and stability toward HER. The presented results will demonstrate how compositional disorder, when guided by entropy stabilization, can be transformed into a rational design strategy for realistic next generation HER electrocatalysts.