Fe/Cu diatomic sites dispersed on nitrogen-doped mesoporous carbon for the boosted oxygen reduction reaction in Mg-air and Zn-air batteries

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 358, P. 124450 - 124450

Published: July 27, 2024

Language: Английский

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MOF‐derived Carbon‐Based Materials for Energy‐Related Applications

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

Published: Jan. 10, 2025

Abstract New carbon‐based materials (CMs) are recommended as attractively active due to their diverse nanostructures and unique electron transport pathways, demonstrating great potential for highly efficient energy storage applications, electrocatalysis, beyond. Among these newly reported CMs, metal–organic framework (MOF)‐derived CMs have achieved impressive development momentum based on high specific surface areas, tunable porosity, flexible structural‐functional integration. However, obstacles regarding the integrity of porous structures, complexity preparation processes, precise control components hinder regulation interface engineering in CMs. In this context, review systematically summarizes latest advances tailored types, processing strategies, energy‐related applications MOF‐derived focuses structure‐activity relationship metal‐free carbon, metal‐doped metallide‐doped carbon. Particularly, intrinsic correlation evolutionary behavior between synergistic interaction micro/nanostructures species with electrochemical performances emphasized. Finally, insights perspectives relevant research presented, future prospects challenges discussed, providing valuable guidance boost high‐performance electrodes a broader range application fields.

Language: Английский

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Biphase Alloy Nanoheterojunction Encapsulated within N‐Doped Carbon Nanotubes as Bifunctional Oxygen Electrocatalyst for High‐Performance Zn‐Air and Mg‐Air Batteries

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

Published: Jan. 10, 2025

Abstract N‐doped carbon confined alloy catalysts possess considerable potential in facilitating oxygen electrocatalytic reaction and consequent applications metal air batteries, but the sluggish catalytic kinetics high barrier of reduction (ORR) remain bottleneck restricting its further development. Here, a novel CoFe‐NiFe biphase nanoheterojunction encapsulated within nanotubes (CoFe‐NiFe@NCNT) is fabricated via hydrothermal carbothermic approach. Owing to plentiful active sites electrical conductance, difference between OER ORR amounts merely 0.68 V. Simultaneously, performance Zn‐air Mg‐air batteries assembled by CoFe‐NiFe@NCNT serving as air‐cathode are superior that commercial Pt/C + RuO 2 . The DFT outcomes reveal transformation *OOH *O rate‐determining step (RDS) ORR/OER. Also, synergy heterojunction conducive reduce energy barrier. This study offers profound understanding toward structural design electrocatalysts utilization metal‐air for portable wearable electronic apparatuses.

Language: Английский

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Breaking symmetry for better catalysis: insights into single-atom catalyst design

Chemical Society Reviews, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

This review examines the strategies of symmetry breaking (charge/coordination/geometric) in single-atom catalysts to regulate active site electronic structures, greatly enhancing catalytic performance.

Language: Английский

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Atomically dispersed rare earth dysprosium-nitrogen-carbon for boosting oxygen reduction reaction

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 684, P. 87 - 96

Published: Jan. 6, 2025

Language: Английский

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Triggering Synergistic Electronic Effect via Electron‐Directed Transfer within Pt_NPs‐Fe/NC Oxygen Reduction Catalyst for Zinc‐Air Batteries

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

Published: Feb. 28, 2025

Abstract Rationally tuning Fe‐N‐C catalysts with synergistic nanoparticles for efficient oxygen reduction reaction (ORR) still remains challenging. Here, a nitrogen‐doped carbon‐supported bimetallic catalyst (Pt NPs ‐Fe/NC), combining atomically dispersed sites Pt nanoparticles, is synthesized. Experimental results reveal directional electron transfer between and Fe sites, which induces an effect, effectively modulating the density around sites. The modulation significantly enhances ORR catalytic activity of ‐Fe/NC. As result, ‐Fe/NC displays half‐wave potential 0.901 V (versus RHE) Tafel slope 59 mV dec −1 , surpassing performance commercial Pt/C demonstrating accelerated kinetics. In meantime, maintains excellent durability in terms stability as well. When assembled into liquid zinc‐air batteries (ZABs), delivers peak power 201.48 mW cm −2 specific capacity 809 mAh g . Additionally, ‐Fe/NC‐based flexible ZABs display outstanding discharge cycling stability. This work highlights effectiveness multiscale advancing provides valuable insights construction strategies energy storage applications.

Language: Английский

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Chemistry In Rechargeable Zinc-Air battery: A Mechanistic Overview

Catalysis Today, Journal Year: 2024, Volume and Issue: unknown, P. 115108 - 115108

Published: Oct. 1, 2024

Language: Английский

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Well-Defined Co₂ Dual-Atom Catalyst Breaks Scaling Relations of Oxygen Reduction Reaction

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(51), P. 35295 - 35304

Published: Dec. 11, 2024

The 4-electron oxygen reduction reaction (ORR) under alkaline conditions is central to the development of non-noble metal-based hydrogen fuel cell technologies. However, kinetics ORR are constrained by scaling relations, where adsorption free energy *OOH intrinsically linked that *OH with a nearly constant difference larger than optimal value. In this study, well-defined binuclear Co

Language: Английский

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Recent progress of density functional theory studies on carbon-supported single-atom catalysts for energy storage and conversion

Chemical Communications, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 20, 2024

Single-atom catalysts (SACs) have become the forefront and hotspot in energy storage conversion research, inheriting advantages of both homogeneous heterogeneous catalysts. In particular, carbon-supported SACs (CS-SACs) are excellent candidates for many applications, due to their maximum atomic efficiency, unique electronic coordination structures, beneficial synergistic effects between active catalytic sites carbon substrates. this review, we briefly review atomic-level regulation strategies optimizing CS-SACs conversion, including structure control, nonmetallic elemental doping, axial design, polymetallic site construction. Then summarize recent progress density functional theory studies on designing by above electrocatalysis, such as hydrogen evolution reaction, oxygen reduction CO

Language: Английский

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Seeding Janus Zn–Fe Diatomic Pairs on a Hollow Nanobox for Potent Catalytic Therapy

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

Published: Jan. 27, 2025

Dual atomic nanozymes (DAzymes) are promising for applications in the field of tumor catalytic therapy. Here, integrating with ultrasmall Fe5C2 nanoclusters, asymmetric coordination featuring Janus Zn-Fe dual-atom sites an O2N2-Fe-Zn-N4 moiety embedded a carbon vacancy-engineered hollow nanobox (Janus ZnFe DAs-Fe5C2) was elaborately developed. Theoretical calculation revealed that synergistic effects Zn centers acting as both adsorption and active sites, oxygen-heteroatom doping, vacancy, nanoclusters jointly downshifted d-band center Fe 3d orbitals, optimizing desorption behaviors intermediates *OH, thereby significantly promoting activity. Upon 1064 nm laser irradiation, DAs-Fe5C2 superior photothermal conversion efficiency (η = 62.5%) showed thermal-augmented Fascinatingly, multienzymatic properties can suppress expression glutathione peroxidase 4 accelerate accumulation lipid peroxides, through which ferroptosis is triggered. Overall, tannin-involved will inspire more inventions biodegradable DAzymes therapy application.

Language: Английский

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