Core–shell, hollow-structured iridium–nickel nitride nanoparticles for the hydrogen evolution reaction

We synthesized core–shell, hollow-structured iridium–nickel nitride nanoparticles and then evaluated their activity in the hydrogen evolution reaction (HER). Coupling Ni nitrides with the IrNi cores enhances the HER activity of Ir shells to a level comparable to that of Pt/C, while reducing the Ir loading of the catalyst.

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