Efficient trifunctional electrocatalysts with iron single atoms electronically coupled with adjacent ruthenium nanoclusters for zinc-air battery-powered water splitting

Applied Catalysis B Environment and Energy, Journal Year: 2025, Volume and Issue: 368, P. 125127 - 125127

Published: Feb. 4, 2025

Language: Английский

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Pyridinic‐N Seized Co in Biphasic Nanoarchitecture for Reversible Oxygen Electrocatalysis Enabling Longevous (>1200 h) Aqueous and Dual‐Anion Kosmotropic Electrolyte Stabilized High Power Quasisolid‐State Zn–Air Battery

Small Methods, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 19, 2025

Abstract Integration of different active sites by heterostructure engineering is pivotal to optimize the intrinsic activities an oxygen electrocatalyst and much needed enhance performance rechargeable Zn–air batteries (ZABs). Herein, a biphasic nanoarchitecture encased in situ grown N‐doped graphitic carbon (MnO/Co‐NGC) with heterointerfacial are constructed. The density functional theory model reveals formation lattice bridged pyridinic nitrogen atoms anchored Co species, which facilitate adsorption intermediates. Consequently, well‐designed catalyst accessible sites, abundant vacant coupling effects, simultaneously accelerate electron/mass transfer thus promotes trifunctional electrocatalysis. assembled aqueous ZAB delivers maximum power ≈268 mW cm −2 specific capacity 797.8 mAh g zn −1 along excellent rechargeability extremely small voltage gap decay rate 0.0007 V h . Further, fabricated quasisolid‐state owns remarkable 163 long cycle life, outperforming benchmark air‐electrode many recent reports, underlining its robustness suitability for practical utilization diverse portable applications.

Language: Английский

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Structure, synthesis and application of carbon based double single atom catalysts

Desalination, Journal Year: 2025, Volume and Issue: 606, P. 118762 - 118762

Published: March 3, 2025

Language: Английский

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Research Progress of Non‐Noble Metal‐Based Self‐Supporting Electrode for Hydrogen Evolution Reaction at High Current Density

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 5, 2025

Abstract Electrocatalytic water splitting has emerged as a key method for large‐scale production of green hydrogen. Constructing efficient, durable, and low‐cost electrocatalysts the hydrogen evolution reaction at high current densities is prerequisite practical industrial applications splitting. Recently, non‐noble metal‐based self‐supporting electrodes have been explored density due to their cost‐effective, conductivity metal substrate, robust interfacial binding between catalyst strong mechanical stability. In this review, recently reported (Ni, Fe, Cu, Co, Ti, Mo, alloy) electrode applied are comprehensively summarized, classified, discussed. Five fundamental design principles such intrinsic activity, abundant active sites, fast electron transfer, mass transport, stability proposed discussed achieve high‐performance under densities. Furthermore, various modification strategies including heteroatom doping, morphology engineering, interface phase strain engineering enhance catalytic activity durability electrode. Finally, challenges prospects designing efficient stable in future This comprehensive overview will provide valuable insight guidance development production.

Language: Английский

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Orderly Stacked “Tile” Architecture with Single‐Atom Iron Boosts Oxygen Reduction in Liquid and Solid‐State Zn–Air Batteries

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 23, 2025

Abstract Oxygen reduction reaction plays a crucial role in energy‐related devices. However, four‐electron transfer process involved this is usually constrained by sluggish kinetics. Single atomic (SA) Fe catalysts have attracted extensive attention due to the high atom utilization, yet impact of support architecture on accelerating has been largely overlooked. Inspired edge‐rich and ordered tile that facilitates rainwater runoff, an orderly stacked “tile” carbon with highly dispersed SA doped S prepared through morphology‐persistent conversion new metal–organic framework assembly. The catalyst exhibits higher half‐wave potential 0.91 V 0.1 M KOH, when compared Pt/C atoms lamellar carbon. This because kinetics accelerated while weakens Fe–O interaction, decreases *OH binding strength. Importantly, catalyst, working at air cathodes, powers liquid solid‐state Zn–air batteries show high‐power density remarkable stability, can effectively charge mobile phone. work not only provides effective but also highlights importance for developing advanced catalysts.

Language: Английский

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Nucleation and growth of MOF-based composite materials for electrochemical energy storage

Particuology, Journal Year: 2025, Volume and Issue: unknown

Published: May 1, 2025

Language: Английский

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Tailoring the First/Second Coordination Layer of FeNi Single Atoms with Nucleophile Atoms to Boost Oxygen Electrocatalysis for Zinc‐Air Batteries

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: May 13, 2025

Abstract Single‐atom catalysts (SACs) have been increasingly explored to boost ORR/OER kinetics in zinc‐air batteries (ZABs). Accurate construction of coordination environments for metal central atoms is the key maximizing their catalytic performance. Here, a meticulous first/second layer co‐tuning strategy proposed construct diatomic FeNi‐S/N‐B/C configuration with high number. Theoretical simulations and experiments together demonstrated that introduction S first breaks symmetric configuration, resulting faster ORR kinetics. Besides, establishment B‐N pi bonds has shown enhance carrier concentration whilst facilitating ingress B into second shell atoms. It results exacerbated electron delocalization toward superior OER kinetics, as well allowing immobilization under attack oxygen electrocatalytic intermediates. The ZAB using exhibits peak power density (246 mW cm −2 ), long cycle life (>650 h) potential operate extreme (−25 °C) wearable energy supply. this study will provide new ideas design SACs.

Language: Английский

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Monoclinic Co-doped BiVO4 nanosphere for high performance supercapacitor

Materials Science and Engineering B, Journal Year: 2025, Volume and Issue: 320, P. 118397 - 118397

Published: May 13, 2025

Language: Английский

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Rational Dual‐Atom Design to Boost Oxygen Reduction Reaction on Iron‐Based Electrocatalysts

Small, Journal Year: 2025, Volume and Issue: unknown

Published: May 19, 2025

Abstract The oxygen reduction reaction (ORR) is critical for energy conversion technologies like fuel cells and metal–air batteries. However, advancing efficient stable ORR catalysts remains a significant challenge. Iron‐based single‐atom (Fe SACs) have emerged as promising alternatives to precious metals. their catalytic performance stability remain constrained. Introducing second metal (M) construct Fe─M dual‐atom (Fe─M DACs) an effective strategy enhance the of Fe SACs. This review provides comprehensive overview recent advancements in Fe‐based DACs ORR. It begins by examining structural advantages from perspectives electronic structure pathways. Next, precise synthetic strategies are discussed, structure–performance relationships explored, highlighting role improving activity stability. also covers situ characterization techniques real‐time observation dynamics intermediates. Finally, future directions proposed, emphasizing integration advanced experimental with theoretical simulations well artificial intelligence/machine learning design highly active catalysts, aiming expand application storage technologies.

Language: Английский

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Enhancing Rechargeable Zinc-Air Batteries with Atomically Dispersed Zinc Iron Cobalt Planar Sites on Porous Nitrogen-Doped Carbon

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

Published: May 19, 2025

Rechargeable zinc-air batteries (ZABs) face significant challenges in achieving both high power density and long-term stability, primarily due to limitations catalytic materials for oxygen electrodes. Here, we present a trimetal planar heterogeneous metal catalyst featuring atomically dispersed ZnN4, FeN4, CoN4 sites supported on porous nitrogen-doped carbon substrate (ZnFeCo-NC) through templating approach. By fine-tuning the content of each metal, optimized ZnFeCo-NC-based ZAB achieves peak 244 mW cm-2 maintains durable performance 500 h at 10 mA cm-2. Ab initio molecular dynamics simulations reveal that ZnFeCo-NC configuration remains stable 300 K during reduction reaction (ORR)/oxygen evolution (OER) process. Further theoretical calculations demonstrate introduction adsorbed OH groups effectively tunes electronic structure redistribution active sites, particularly improving Fe site ORR Co OER. These findings provide insights into rational design high-performance electrocatalysts energy storage technologies.

Language: Английский

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