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Abstract
AbstractDeveloping powerful and tolerant catalysts toward hydrogen evolution reaction (HER) is fairly meaningful and critical for the conversion and utilization of green energy. In this work, we exploit an improved, reliable, and convenient strong electrostatic adsorption strategy to synthesize Ru‐based electrocatalysts containing ultra‐small Ru nanoparticles (NPs). As verified by experimental studies and characterization analysis, the optimized treatment can strengthen the powerful interaction for anchoring ultra‐small Ru NPs dispersed on carbon substrate and prevent the migration and agglomeration of Ru NPs during catalytic reactions. It is demonstrated that the designed Ru−KB−H−6H exhibits exceptional HER performance with low overpotential (η10) and Tafel slope (52 mV and 41.5 mV dec−1 in 0.5 M H2SO4, 53 mV and 61.0 mV dec−1 in 1.0 M KOH). As expected, Ru−KB−H−6H displays dramatical stability with no unacceptable decline of LSV performance after 8000 cycles and long‐term test. This finding paves a practical way to fabricate high‐efficient, and steady electrocatalysts toward HER for industrial applications.
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