Processing-induced differences in hydrogen evolution activity of Fe _{3− x} Ni _{Miłosz Kożusznik, Mathias Smialkowski, Tomasz Kurek, Krzysztof Mars, Jakub Cieślak, Ulf-Peter Apfel, Andrzej Mikuła}

Bimetallic Fe _{3− x} Ni _x Se ₄ monoclinic catalysts undergo surface restructuring, which depending on the electrode architecture, promotes hydrogen evolution either via Fe leaching or by promoting Ni–Se active sites.