Titanium nitride supported ruthenium-based catalysts, methods of making and using the same

Abstract

This invention belongs to the field of new energy and new materials, specifically relating to a ruthenium-based catalyst supported on titanium nitride, its preparation method, and its application. The catalyst uses self-made ultralong titanium nitride nanorods as a support, with ruthenium as the active metal component. Due to the strong metal-support interaction, the increase in reduction temperature allows titanium nitride to gradually cover the ruthenium nanoparticles. The coating's encapsulation effect on the ruthenium nanoparticles results in a catalyst exhibiting extremely high stability. Simultaneously, the increased ruthenium-titanium nitride interface induces more electron transfer from the ruthenium nanoparticles to the titanium nitride support, affecting the catalytic activity of the hydrogen evolution reaction. This invention develops a highly active and stable alkaline water electrolysis hydrogen evolution catalyst. The preparation process is simple and feasible, using inexpensive and readily available raw materials, while also expanding the potential of metal-support interactions in the design and utilization of electrocatalyst materials.

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