eScience, Journal Year: 2025, Volume and Issue: unknown, P. 100427 - 100427
Published: May 1, 2025
Language: Английский
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 7, 2025
Abstract The spin‐polarization strategy by manipulating magnetic electrocatalysts can promote the spin‐sensitive oxygen evolution reaction (OER) while developing efficient spin‐polarized materials toward ampere‐level OER is still challenging. Herein, a hierarchical inter‐doped (Ru‐Ni)O x nanosheet array in situ grown on nickel foam designed, which exhibits distinguished overpotential of 286 mV at 1 A cm −2 under 0.4 T field and steady lifespan 200 h ampere current density (i.e., ), outperforming most reported state‐of‐art spin‐selective catalysts alkaline electrolytes Integrating intrinsic interfacial significantly boost catalytic activity for field. Specifically, spin‐aligned Ru sites optimize rate‐determined O─O coupling step to reduce thermodynamic barrier OER. Meanwhile, charge transfer kinetics promoted due accelerating electron via spin pinning ferromagnetic‐antiferromagnetic interface. design structure that integrates strategies provides an additional route catalyst capable serving densities.
Language: Английский
Citations
0
Advanced Energy and Sustainability Research, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 16, 2025
The sluggish kinetics of oxygen‐involved electrolysis, such as oxygen evolution reaction (OER) and reduction (ORR), hinders the efficiency pertaining energy conversion process, which can be promoted by using spin‐selective materials to align spin direction intermediates. This review delivers a thorough timely overview state‐of‐the‐art catalysts for OER ORR. Primarily, fundamental principle process is depicted spin‐sensitive pathways, pointing out that existence spin‐polarized adsorption sites necessary development catalysts. Subsequently, approaches investigating spin‐related transition during electrocatalysis are introduced reviewing in situ technologies theoretical calculations. Then, reported categorized into intrinsic materials, doping‐induced multiple magnetic composites discuss their application electrocatalytic ORR well mechanism polarization. Finally, open questions prospects this field concluded, aiming offer clear route designing novel highly‐efficient industrial electrocatalysis.
Language: Английский
Citations
0
ACS Nano, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 24, 2025
Ruthenium (Ru)-based catalysts have demonstrated promising utilization potentiality to replace the much expensive iridium (Ir)-based ones for proton exchange membrane water electrolysis (PEMWE) due their high electrochemical activity and low cost. However, susceptibility of RuO2-based materials easily be oxidized high-valent soluble Ru species during oxygen evolution reaction (OER) in acid media hinders practical application, especially under current density above 500 mA cm–2. Here, a manganese-doped RuO2 catalyst with hydroxylated metal sites (i.e., H–Mn0.1Ru0.9O2) is synthesized acidic OER assisted by hydrogen peroxide, where hydroxylation results valence state below +4. The H–Mn0.1Ru0.9O2 demonstrates an overpotential 169 mV at 10 cm–2 stability over 1000 h electrolyte. A PEMWE device fabricated as anode shows 1 ∼1.65 V, along degradation continuous tens hours. Differential mass spectrometry (DEMS) theoretical calculations confirm that performs through adsorbate mechanism (AEM) pathway, synergistic effect Mn doping can effectively enhance lattice atoms.
Language: Английский
Citations
0
Small, Journal Year: 2025, Volume and Issue: unknown
Published: March 5, 2025
The past decade has seen significant progress in proton exchange membrane water electrolyzers (PEMWE), but the growing demand for cost-effective electrolytic hydrogen pushes higher efficiency at lower costs. As a complex system, performance of PEMWE is governed by combination multiscale factors. This review summarizes latest from quantum to macroscopic scales. At level, electron spin configurations can be optimized enhance catalytic activity. nano and meso scales, advancements atomic structure optimization, crystal phase engineering, heterostructure design improve mass transport. macro scale, innovative techniques gas bubble management internal resistance reduction drive further gains under ampere-level operating conditions. These modifications level cascade through meso- macro-scales, affecting charge transfer, reaction kinetics, evolution management. Unlike conventional approaches that focus solely on one scale-either catalyst (e.g., atomic, or modifications) device porous transport layers design)-combining optimizations unlocks greater improvements. Finally, perspective future opportunities engineering anode toward commercial viability offered.
Language: Английский
Citations
0
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: March 20, 2025
Abstract Energy electrocatalytic reactions such as hydrogen evolution reaction, oxygen reduction nitrogen carbon etc., are important to solve the current energy shortage and increasing environmental problems. Developing novel efficient catalyts for these has become an essential urgent issue. Catalysts incorporating bridge‐oxygen bond have received attention due their superior conductivity stability, which favorable optimizing reaction mechanism improving kinetics. This paper provides a comprehensive review encompassing concept of bond, means characterization, activity in electrocatalysis effect on catalytic performance. Through this review, it is expected furnish valuable reference rational design catalysts featuring structure across diverse reactions.
Language: Английский
Citations
0
eScience, Journal Year: 2025, Volume and Issue: unknown, P. 100427 - 100427
Published: May 1, 2025
Language: Английский
Citations
0