Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 115613 - 115613
Published: Jan. 1, 2025
Language: Английский
Advanced Materials, Journal Year: 2024, Volume and Issue: 36(25)
Published: April 9, 2024
The interaction between oxygen species and metal sites of various orbitals exhibits intimate correlation with the reduction reaction (ORR) kinetics. Herein, a new approach for boosting inherent ORR activity atomically dispersed Fe-N-C matrix is represented by implanting Fe atomic clusters nearby. as-prepared catalyst delivers excellent half-wave potentials 0.78 0.90 V in acidic alkaline solutions, respectively. decent can also be validated from high-performance rechargeable Zn-air battery. experiments density functional theory calculations reveal that electron spin-state monodispersed active transferred low spin (LS, t
Language: Английский
Citations
101
Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)
Published: Feb. 1, 2024
Abstract The nanoreactor holds great promise as it emulates the natural processes of living organisms to facilitate chemical reactions, offering immense potential in catalytic energy conversion owing its unique structural functionality. Here, we propose utilization precisely engineered carbon spheres building blocks, integrating micromechanics and controllable synthesis explore their functionalities two-electron oxygen reduction reactions. After conducting rigorous experiments simulations, present compelling evidence for enhanced mass transfer microenvironment modulation effects offered by these mesoporous hollow spheres, particularly when possessing a suitably sized architecture. Impressively, pivotal achievement lies successful screening potent, selective, durable reaction catalyst direct medical-grade hydrogen peroxide disinfectant. Serving an exemplary demonstration engineering screening, this work highlights various well-designed carbon-based nanoreactors extensive applications.
Language: Английский
Citations
54
Advanced Materials, Journal Year: 2024, Volume and Issue: unknown
Published: June 25, 2024
Abstract Catalysts play a crucial role in water electrolysis by reducing the energy barriers for hydrogen and oxygen evolution reactions (HER OER). Research aims to enhance intrinsic activities of potential catalysts through material selection, microstructure design, various engineering techniques. However, consumption has often been overlooked due intricate interplay among catalyst microstructure, dimensionality, catalyst–electrolyte–gas dynamics, surface chemistry, electron transport within electrodes, transfer electrode components. Efficient development high‐current‐density applications is essential meet increasing demand green hydrogen. This involves transforming with high into electrodes capable sustaining current densities. review focuses on improvement strategies mass exchange, charge transfer, resistance decrease consumption. It bridge gap between laboratory‐developed, highly efficient industrial regarding structural catalyst‐electrode interplay, outlining roadmap hierarchically structured electrode‐based minimizing loss electrocatalysts splitting.
Language: Английский
Citations
31
Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(2), P. 780 - 790
Published: Jan. 1, 2024
Ti-MOFs with synergetic various sites are designed to serve as a “host” platform for GPE tune the electrolyte properties. This unique system can improve Li + ion conduction, mechanical strength and ability withstand high voltage.
Language: Английский
Citations
24
Advanced Materials, Journal Year: 2024, Volume and Issue: 36(27)
Published: April 17, 2024
Abstract Ordered pore engineering that embeds uniform pores with periodic alignment in electrocatalysts opens up a new avenue for achieving further performance promotion. Hierarchically ordered porous metal–organic frameworks (HOP‐MOFs) possessing multilevel distribution are the promising precursors exploration of electrocatalysts, while scalable acquisition HOP‐MOFs editable components and adjustable size regimes is critical. This review presents recent progress on hierarchically MOF‐based materials enhanced electrocatalysis. The synthetic strategies different regimes, including self‐assembly guided by reticular chemistry, surfactant, nanoemulsion, nanocasting, first introduced. Then applications as exploring summarized, selecting representatives to highlight boosted performance. Especially, intensification molecule ion transport integrated optimized electron transfer site exposure over derivatives emphasized clarify directional integration effect endowed engineering. Finally, remaining scientific challenges an outlook this field proposed. It hoped will guide nanocatalysts boosting catalytic promoting practical applications.
Language: Английский
Citations
22
Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(9), P. 4931 - 4970
Published: Jan. 1, 2024
The fabrication strategies of mesopores and macropores in metal–organic frameworks (MOFs) their emerging applications are summarized. In addition, the challenges future perspectives pore engineering MOF design also indicated.
Language: Английский
Citations
18
Chemical Science, Journal Year: 2024, Volume and Issue: 15(29), P. 11188 - 11228
Published: Jan. 1, 2024
The oxygen reduction reaction (ORR) is a key component for many clean energy technologies and other industrial processes. However, the low selectivity sluggish kinetics of ORR catalysts have hampered conversion efficiency real application these new mentioned before. Recently, tremendous efforts been made in mechanism understanding, electrocatalyst development system design. Here, comprehensive critical review provided to present recent advances field electrocatalytic ORR. two-electron four-electron transfer catalytic mechanisms evaluation parameters are discussed first. Then, up-to-date synthetic strategies
Language: Английский
Citations
18
Small, Journal Year: 2024, Volume and Issue: 20(24)
Published: Jan. 6, 2024
Abstract The present study proposes a novel engineering concept for the customization of functionality and construction superstructure to fabricate 2D monolayered N‐doped carbon electrocatalysts decorated with Co single atoms or 2 P nanoparticles derived from bimetallic ZnCo‐ZIF precursors. hierarchically porous maximizes exposure accessible active sites, enhances electron/mass transport efficiency, accelerates reaction kinetics simultaneously. Consequently, embedded (Co‐NCS) exhibits remarkable catalytic activity toward oxygen reduction reaction, achieving half‐wave potential 0.886 V versus RHE. Additionally, (Co P‐NCS) demonstrates high both evolution hydrogen delivering low overpotentials 292 mV at 10 mA cm −2 193 respectively. Impressively, when employed in an assembled rechargeable Zn‐air battery, as‐prepared exhibit exceptional performance peak power density 219 mW minimal charge/discharge voltage gap only 1.16 100 . Moreover, cell required drive overall water‐splitting electrolyzer current is merely 1.69 using these catalysts as electrodes.
Language: Английский
Citations
17
Chemical Reviews, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 18, 2025
The electrocatalytic technique, as an efficient energy storage and conversion technology, has attracted significant attention to address exhaustion environmental pollution. Usually, the activity selectivity of reactions are largely dominated by dynamic process occurring on electrocatalysts. Therefore, high-performance electrocatalysts, which can dominate pathway barrier reactions, great significance for advancement technique. Metal-organic frameworks (MOFs), emerging crystalline porous materials, present structural component advantages including well-defined structure, high surface area, large porosity, diverse components, easy tailorability, demonstrating fantastic potential precise fabrication In this Review, strategies in electrocatalysts based MOF-related materials specifically introduced from aspects catalytic site design microenvironment modulation around sites. Furthermore, representative progress achieved various applications employing MOF-based is systematically summarized, with special emphasis MOFs performance optimization. Finally, remaining challenges future perspectives further highlighted.
Language: Английский
Citations
3
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: March 7, 2025
Abstract Lithium‐sulfur (Li‐S) batteries are considered the most promising alternative for energy storage, however, their practical applications still limited by lithium dendrites growth, slow polysulfides (LiPSs) conversion kinetics, shuttle effect, and deposition of “dead sulfur” at Li anode surface. Herein, a novel ionic liquid tetrabutylammonium triiodide (TBAI 3 ) is adopted as multi‐effect electrolyte additive to solve low coulombic efficiency short life issues Li‐S batteries. A series in situ characterization technologies, theoretical calculations, potentiostatic 2 S experiments, different kinds symmetric asymmetric cells conducted reveal multifunctional electrochemical work mechanism. It found that TBA + cations can coordinate with solvent molecules, reduce desolvation barrier, accelerate transport kinetics; they also form dynamic electrostatic shielding layer protrusions induce uniform deposition. The I − /I redox pairs continuously eliminate transforming deposits into soluble LiPSs release active substances during cycling, while reduzate be electrochemically rejuvenated when charged 2.89 V. Therefore, TBAI additives exhibit ultra‐long cycle performance 503 mAh g −1 C after 1000 cycles an average 99.99%.
Language: Английский
Citations
3