Insights into the pH effect on hydrogen electrocatalysis

Chemical Society Reviews, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

This review systematically provides various insights into the pH effect on hydrogen electrocatalysis, and thus providing a reference for future development of electrocatalysis based these insights.

Язык: Английский

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In‐situ Reconstruction of Catalyst in Electrocatalysis

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 22, 2024

Abstract Reconstruction of catalysts is now well recognized as a common phenomenon in electrocatalysis. As the reconstructed structure may promote or hamper electrochemical performance, how to achieve designed active surface for highly enhanced catalytic activity through reconstruction needs be carefully investigated. In this review, genesis and effects various processes, such hydrogen evolution reaction (HER), oxygen (OER), carbon dioxide reduction (CO 2 RR), nitrate (NO 3 RR) are first described. Then, strategies optimizing reconstruction, valence states control, phase retention, engineering, poisoning prevention comprehensively discussed. Finally, general rules optimization summarized give perspectives future study. It believed that review shall provide deep insights into electrocatalytic mechanisms guide design pre‐catalysts with improved activity.

Язык: Английский

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In situ/Operando Investigation for Heterogeneous Electro-Catalysts: From Model Catalysts to State-of-the-Art Catalysts

ACS Energy Letters, Год журнала: 2024, Номер 9(9), С. 4414 - 4440

Опубликована: Авг. 17, 2024

Electrochemical reactions, including water splitting, oxygen reduction, hydrogen oxidation, carbon dioxide nitrogen oxide etc., are critical for sustainable energy conversion and storage. Achieving high efficiency in these reactions requires catalysts with superior activity, selectivity, stability, often realized through nanostructured metal catalysts. However, practical challenges such as low selectivity catalytic degradation persist. In situ operando characterization techniques offer real-time insights into catalyst behavior under reaction conditions, enabling a deeper understanding of structure–performance relationships and, therefore, guiding the design optimization electro-catalysts. This review discusses common situ/operando techniques, highlights their applications model catalysts, single-atom single-crystal further explores combinational analysis to study complex nanocatalysts. Finally, we provide suggestions perspectives on development advance field electrochemical catalysis.

Язык: Английский

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MXene and Ru doping co-enhanced the hydrogen evolution reaction performance of cobalt pyridinedicarboxylic coordinated polymer

Journal of Colloid and Interface Science, Год журнала: 2025, Номер 690, С. 137278 - 137278

Опубликована: Март 9, 2025

Язык: Английский

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Interface engineering of Ni3S2 coupled NiFe-LDH heterostructure enables superior overall water splitting

Materials Today Chemistry, Год журнала: 2025, Номер 43, С. 102510 - 102510

Опубликована: Янв. 1, 2025

Язык: Английский

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Boosting hydrogen production from alkaline water splitting via electrochemical active surface reconstruction of transition metal sulfide electrocatalysts

Journal of Materials Chemistry A, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

The degree of surface reconstruction reaction sulfide catalyst is controlled, 20 s-NMSO could reach a current 1 A cm −2 at an ultra-low overpotential 231 mV, and the voltage only increased by 0.06% after 6 days constant testing.

Язык: Английский

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Construction of a p-p heterojunction Co3O4/MoS2 electrocatalyst for boosting hydrogen evolution reaction

Electrochimica Acta, Год журнала: 2024, Номер 494, С. 144451 - 144451

Опубликована: Май 16, 2024

Язык: Английский

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Dual Hydrogen Production System: Synergistic Effect of Ru and Ce Over Cu₂O Nanotubes Drives Hydrogen Evolution and Formaldehyde Oxidation

Small, Год журнала: 2024, Номер 20(47)

Опубликована: Авг. 22, 2024

Water splitting for hydrogen production is limited by high cell voltage and low energy conversion efficiencies due to the slow kinetic process of oxygen evolution reaction (OER). Here, an electrolytic system constructed in which cathode anode co-release H

Язык: Английский

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Ni_xB/Mo_0.8B₃ Nanorods Encapsulated by a Boron‐Rich Amorphous Layer for Universal pH Water Splitting at the Ampere Level

Advanced Energy Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 4, 2024

Abstract Heterostructured interfaces are crucial to electrocatalysts for water splitting. Herein, coral‐like multiheterostructured Ni x B/Mo 0.8 B 3 (NMB) nanorods encapsulated by a boron‐rich amorphous layer prepared Density‐functional theory (DFT) calculations indicate that the NMB interface adjusts d ‐band center and electronic structure of molybdenum sites. Owing strong coupling between Ni, Mo, at heterojunction, large number exposed catalytic active sites, as well special hydrophilic characteristics endowed surrounding layer, catalyst exhibits remarkable universal‐pH hydrogen evolution reaction (HER) activity with low overpotentials ( η ) 15, 26, 83 mV deliver 10 mA cm −2 in basic, acid, neutral media, respectively, outstanding oxygen (OER) basic medium 500 170 420 mV, respectively. The unique self‐supporting 3D hierarchical interconnected facilitates mass transport thus leading high mechanical stability 450 200 h HER OER ≈1000 . More importantly, excellent performance toward overall‐water electrolysis bifunctional ultralow cell voltages 1.45/1.56/1.85 V @ 10/100/1000 , demonstrating potential industrial splitting applications.

Язык: Английский

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Design Principle and Regulation Strategy of Noble Metal‐Based Materials for Practical Proton Exchange Membrane Water Electrolyzer

Advanced Energy Materials, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 26, 2024

Abstract Green hydrogen holds immense promise in combating climate change and building a sustainable future. Owing to its high power‐to‐gas conversion efficiency, compact structure, fast response, the proton exchange membrane water electrolyzer (PEMWE) stands out as most viable option for widespread production of green hydrogen. However, harsh operating conditions PEMWE make it heavily dependent on noble metal‐based catalysts (NMCs) incur operational maintenance costs, which hinder extensive adoption. Hence, is imperative improve performance lifespan NMCs develop advanced components reduce overall costs integrating technology into practical applications. In light this, fundamental design principles employed acidic electrolysis are summarized, well recent advancements compositional structural engineering enhance intrinsic activity active site density. Moreover, innovations stack their impact cost‐benefit presented. Finally, current challenges examined, potential solutions optimizing electrocatalytic discussed.

Язык: Английский

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