High density iridium synergistic sites boosting CO-tolerate performance for PEMFC anode

eScience, Год журнала: 2024, Номер 4(4), С. 100230 - 100230

Опубликована: Янв. 10, 2024

The usage of cheap crude H2 in proton-exchange membrane fuel cells (PEMFCs) is still unrealistic to date, due the suffering current Pt based nano-catalysts from impurities such as CO anode. Recently, synergistic active sites between single atom (SA) and nanoparticle (NP) have been found be promising for overcoming poisoning problem. However, lengthening nanoparticle-single (SA-NP) interface, i.e., constructing high density sites, remains highly challenging. Herein, we present a new strategy on molecular fusion create abundant SA-NP interfaces, with interfaces created 2D nitrogen doped carbon nanosheets (Ir-SACs&NPs/NC). Owing abundance interface catalyst was empowered tolerance towards up 1000 ppm feed. These findings provide guidelines design construction anti-poisoning catalysts PEMFC

Язык: Английский

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Enhanced hydrogen storage efficiency with sorbents and machine learning: a review

Environmental Chemistry Letters, Год журнала: 2024, Номер 22(4), С. 1703 - 1740

Опубликована: Май 16, 2024

Abstract Hydrogen is viewed as the future carbon–neutral fuel, yet hydrogen storage a key issue for developing economy because current techniques are expensive and potentially unsafe due to pressures reaching up 700 bar. As consequence, research has recently designed advanced sorbents, such metal–organic frameworks, covalent organic porous carbon-based adsorbents, zeolite, composites, safer storage. Here, we review with focus on sources production, machine learning. Carbon-based sorbents include graphene, fullerene, carbon nanotubes activated carbon. We observed that capacities reach 10 wt.% 6 3–5 adsorbents. High-entropy alloys composites exhibit improved stability uptake. Machine learning allowed predicting efficient materials.

Язык: Английский

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Spinel-type high-entropy oxide nanotubes for efficient oxygen evolution reaction

Colloids and Surfaces A Physicochemical and Engineering Aspects, Год журнала: 2024, Номер 686, С. 133315 - 133315

Опубликована: Янв. 24, 2024

Язык: Английский

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Investigation of the mixing characteristics of hydrogen and natural gas in different static mixers

International Journal of Hydrogen Energy, Год журнала: 2024, Номер 72, С. 166 - 178

Опубликована: Май 29, 2024

Язык: Английский

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Recent advances in Food Waste-Derived Nanoporous Carbon for Energy Storage

Science and Technology of Advanced Materials, Год журнала: 2024, Номер 25(1)

Опубликована: Май 20, 2024

Affordable and environmentally friendly electrochemically active raw energy storage materials are in high demand to switch mass-scale renewable energy. One particularly promising avenue is the feasibility of utilizing food waste-derived nanoporous carbon. This material holds significance due its widespread availability, affordability, ease processing, and, notably, cost-free nature. Over years, various strategies have been developed convert different wastes into carbon with enhanced electrochemical properties. The performance these influenced by both intrinsic factors, such as composition elements derived from original sources recipes, extrinsic including conditions during pyrolysis activation. While current efforts dedicated optimizing process parameters achieve superior devices, it timely take stock state research this emerging field. review provides a comprehensive overview recent developments fabrication surface characterisation porous carbons wastes. A special focus given on applications waste for batteries supercapacitors.

Язык: Английский

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Transition Metal Carbonitride MXenes Anchored with Pt Sub-Nanometer Clusters to Achieve High-Performance Hydrogen Evolution Reaction at All pH Range

Nano-Micro Letters, Год журнала: 2025, Номер 17(1)

Опубликована: Янв. 31, 2025

Transition metal carbides, known as MXenes, particularly Ti3C2Tx, have been extensively explored promising materials for electrochemical reactions. However, transition carbonitride MXenes with high nitrogen content reactions are rarely reported. In this work, incorporated Pt-based electrocatalysts, ranging from single atoms to sub-nanometer dimensions, hydrogen evolution reaction (HER). The fabricated Pt clusters/MXene catalyst exhibits superior HER performance compared the single-atom-incorporated MXene and commercial Pt/C in both acidic alkaline electrolytes. optimized sample shows low overpotentials of 28, 65, 154 mV at a current densities 10, 100, 500 mA cm-2, small Tafel slope 29 dec-1, mass activity 1203 mgPt-1 an excellent turnover frequency 6.1 s-1 electrolyte. Density functional theory calculations indicate that can be attributed enhanced active sites, increased surface groups, faster charge transfer dynamics, stronger electronic interaction between MXene, resulting absorption/desorption toward better HER. This work demonstrates may candidates various catalytic by incorporating or clusters.

Язык: Английский

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Physical-based hydrogen storage

Elsevier eBooks, Год журнала: 2025, Номер unknown, С. 163 - 253

Опубликована: Янв. 1, 2025

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The performance of MOFs and rich structure types of stable Zr-MOFs in storing clean energy: Hydrogen

Journal of Energy Storage, Год журнала: 2025, Номер 116, С. 115928 - 115928

Опубликована: Март 6, 2025

Язык: Английский

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Adjacent Mn site boosts photocatalytic hydrogen evolution of MnXCd1-XS solid solution through a dual-metal-site design

Journal of Colloid and Interface Science, Год журнала: 2023, Номер 652, С. 470 - 479

Опубликована: Авг. 7, 2023

Язык: Английский

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Nickel tungstate-based electrocatalyst, photocatalyst, and photoelectrocatalyst in water splitting applications

International Journal of Hydrogen Energy, Год журнала: 2023, Номер 53, С. 859 - 874

Опубликована: Дек. 5, 2023

Язык: Английский

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