Abstract
Exploiting efficient and economical electrocatalysts for hydrogen evolution reaction (HER) is critical for sustainable energy systems. Herein we engineer a novel nanocomposite (RuP/NP-C) comprising ultrafine RuP nanoparticles encapsulated in N, P co-doped porous carbon derived from a well-defined Ru3+ incorporated phytic acid–polyaniline composite. Benefitting from its unique composition and architecture with full exposure of active sites, rapid mass/charge transfer, and improved structural robustness, RuP/NP-C nanocomposite can exhibit respectable HER performance. Significantly, from experimental and theoretical investigations, it is revealed that charge redistribution occurs due to interfacial electronic interaction between RuP and NP-C, leading to electronic modulation of RuP with upshift of the d-band center relative to Fermi level, thereby yielding optimal hydrogen binding strength for HER. This study highlights a promising route to tailor the electronic state of catalyst via interfacial electronic effect for boosted catalytic property.
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