A Nanostructured Ru‐Mn‐Nb Alloy with Oxygen‐Enriched Boundaries for Ampere‐Level Hydrogen Evolution

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: April 26, 2025

Abstract Development of active and cost‐effective electrocatalysts to substitute platinum‐based catalysts in alkaline hydrogen evolution reactions (HERs) remains a challenge. The synergistic effect between different elements alloy can regulate electronic structure thereby provide an abundance catalytic sites for reactions. Thus, are suitable candidates future energy applications. Conventional methods enhancing the performance have mainly focused on element composition thus often neglected examine catalyst design. In this paper, ruthenium–manganese–niobium (Ru 62 Mn12Nb 21 O 5 ) is reported with supra‐nanocrystalline dual‐phase that fabricated through combinatorial magnetron co‐sputtering at ambient temperatures. induced crystal–crystal heterostructure Ru Mn 12 Nb reduced system energy, achieving balance stability activity. exhibited excellent HER performance, as demonstrated by low overpotential (18 mV 10 mA cm −2 robust (300 h 1.2 A ). Moreover, oxygen‐rich interfaces enhanced charge transfer kinetics water dissociation well optimized adsorption/desorption processes, boosting performance. its nanocrystalline structure, which represents new structural design sustainable development.

Language: Английский

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Regulating electron effect by interface-induced dislocation in Fe2P/Fe to accelerate oxygen reduction reactions

Materials Today Physics, Journal Year: 2025, Volume and Issue: 54, P. 101739 - 101739

Published: April 28, 2025

Language: Английский

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Regulating oxygen vacancy and interface structure of NiCu/NiMoO4 bifunctional catalyst for stable and efficient photothermal catalysis and overall water splitting

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: 1028, P. 180701 - 180701

Published: April 29, 2025

Language: Английский

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Monolayer Covalent C₆₀ Networks Anchored with Uniform Ultrasmall Iridium Nanoparticles for Boosting Electrocatalytic Hydrogen Evolution

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: May 10, 2025

The design of highly active and durable acidic hydrogen evolution reaction (HER) electrocatalysts remains a critical challenge for advancing production technologies. Monolayer graphullerene, two-dimensional (2D) carbon network derived from C60 fullerenes, exhibits exceptional properties such as structural stability, high specific surface area, superior in-plane electron conductivity, distinctive electron-accepting behavior, positioning it an ideal catalyst support. In this work, we report the synthesis ultrafine iridium nanoparticles (∼1.7 nm) anchored on monolayer graphullerene (Ir NP@MLG) demonstrate its excellent HER performance in media. Comprehensive morphological analyses confirm atomic-scale dispersion Ir framework. NP@MLG hybrid achieves activity with ultralow overpotential η10 = 18 mV (vs RHE) Tafel slope 16.54 dec-1, surpassing most reported Ir-based catalysts. Notably, mass 3.48 A mg-1 at -50 RHE), representing one highest values among state-of-the-art Stability tests reveal durability, negligible loss after 260 h continuous operation. originates (1) graphullerene's 2D conductive facilitating rapid charge transfer (2) strong metal-support interactions optimizing electronic structure nanoparticle stabilization. This study establishes interesting support developing electrocatalysts, providing deep insights into efficient energy systems.

Language: Английский

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Hydrogen spillover in CoNi/CoNiMo3O8 Mott-Schottky heterostructure facilitates ampere-level hydrogen generation

Nano Energy, Journal Year: 2025, Volume and Issue: unknown, P. 111125 - 111125

Published: May 1, 2025

Language: Английский

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