Tunable fcc/hcp NiRu alloy nanoparticles anchored on hierarchical N-doped carbon nanosheets for enhanced hydrogen evolution.

ABSTRACT: Developing highly active, stable and low-cost electrocatalysts for the hydrogen evolution reaction (HER) is crucial for large-scale water electrolysis. Herein, we report a molecule-assisted assembly-pyrolysis strategy to construct hierarchical N-doped carbon nanosheets anchored with NiRu alloy nanoparticles (Ni₅Ru@N-C) as a highly active and durable HER electrocatalyst. Strong coordination between iminodiacetonitrile (IDAN) and Ni/Ru ions forms a two-dimensional organometallic coordination polymer (OCP) precursor, which pyrolyzes into thin carbon-layer-encapsulated NiRu nanoparticles with controllable face-centered cubic (fcc) and hexagonal close-packed (hcp) phase, optimizing hydrogen adsorption and catalytic activity. The optimized fcc/hcp Ni₅Ru@N-C exhibits an ultr

SUBMITTER: Li Z 

PROVIDER: S-EPMC12648473 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature