Advancements in hydrogen storage technologies: A comprehensive review of materials, methods, and economic policy

Nano Today, Год журнала: 2024, Номер 56, С. 102302 - 102302

Опубликована: Май 17, 2024

Язык: Английский

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Spatial configuration of Fe–Co dual-sites boosting catalytic intermediates coupling toward oxygen evolution reaction

Proceedings of the National Academy of Sciences, Год журнала: 2024, Номер 121(6)

Опубликована: Янв. 31, 2024

Oxygen evolution reaction (OER) is the pivotal obstacle of water splitting for hydrogen production. Dual-sites catalysts (DSCs) are considered exceeding single-site due to preternatural synergetic effects two metals in OER. However, appointing specific spatial configuration dual-sites toward more efficient catalysis still remains a challenge. Herein, we constructed configurations Fe-Co dual-sites: stereo sites (stereo-Fe-Co DSC) and planar (planar-Fe-Co DSC). Remarkably, planar-Fe-Co DSC has excellent OER performance superior stereo-Fe-Co DSC. DFT calculations experiments including isotope differential electrochemical mass spectrometry, situ infrared spectroscopy, Raman reveal *O intermediates can be directly coupled form *O-O* rather than *OOH by both DSCs, which could overcome limitation four electron transfer steps Especially, proper distance steric direction benefit cooperation dual dehydrogenate into rate-determining step. This work provides valuable insights support further research development dual-site catalysts.

Язык: Английский

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The Effect of Electrolytes on the Kinetics of the Hydrogen Evolution Reaction

Hydrogen, Год журнала: 2023, Номер 4(4), С. 776 - 806

Опубликована: Окт. 13, 2023

Amid global energy challenges, the hydrogen evolution reaction (HER) is gaining traction for green production. While catalyst research ongoing, recognizing electrolyte effects remains crucial sustainable production via renewable-powered water electrolysis. This review delves into intricate of electrolytes on kinetics HER. It examines key factors including pH, cations, anions, impurities, and concentration. discusses notion that pH alters catalyst–electrolyte interactions proton concentrations, thereby influencing such as binding energy, adsorption, overall kinetics. Moreover, this provides a briefing cations Li+ can impact HER positively or negatively, offering opportunities improvement based metal substrate. Interestingly, there potential be tuned using ions to modify M–H bond demonstrating flexibility beyond levels counter-ions. The varied adsorption energies electrodes are also found influence anions impurities discussed, emphasizing both positive negative impacts it pointed out electrolyte-engineering approach enhances without permanent surface modifications. underscores importance composition, highlighting challenges solutions in advancing

Язык: Английский

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Electrochemical Oxidation of Small Molecules for Energy‐Saving Hydrogen Production

Advanced Energy Materials, Год журнала: 2024, Номер 14(30)

Опубликована: Май 27, 2024

Abstract Electrochemical water splitting is a promising technique for the production of high‐purity hydrogen. Substituting slow anodic oxygen evolution reaction with an oxidation that thermodynamically more favorable enables energy‐efficient Moreover, this approach facilitates degradation environmental pollutants and synthesis value‐added chemicals through rational selection small molecules as substrates. Strategies small‐molecule electrocatalyst design are critical to electrocatalytic performance, focus on achieving high current density, selectivity, Faradaic efficiency, operational durability. This perspective discusses key factors required further advancement, including technoeconomic analysis, new reactor system design, meeting requirements industrial applications, bridging gap between fundamental research practical product detection separation. aims advance development hybrid electrolysis applications.

Язык: Английский

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Bimetallic nanoalloys planted on super-hydrophilic carbon nanocages featuring tip-intensified hydrogen evolution electrocatalysis

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Авг. 21, 2024

The insufficient availability and activity of interfacial water remain a major challenge for alkaline hydrogen evolution reaction (HER). Here, we propose an "on-site disruption near-site compensation" strategy to reform the bonding network via deliberate cation penetration catalyst support engineering. This concept is validated using tip-like bimetallic RuNi nanoalloys planted on super-hydrophilic high-curvature carbon nanocages (RuNi/NC). Theoretical simulations suggest that tip-induced localized concentration hydrated K+ facilitates optimization dynamics intermediate adsorption. In situ synchrotron X-ray spectroscopy endorses H* spillover-bridged Volmer‒Tafel mechanism synergistically relayed between Ru Ni. Consequently, RuNi/NC exhibits low overpotential 12 mV high durability 1600 h at 10 mA cm‒2 HER, demonstrates performance in both electrolysis chlor-alkali electrolysis. offers microscopic perspective design manipulation local structure toward enhanced HER kinetics. A with optimized H2 reported. designed shows catalytic by achieving 13.6-fold higher mass than Pt/C.

Язык: Английский

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Hydrogen permeation behavior of rubber sealing materials for hydrogen infrastructure: Recent advances and perspectives

International Journal of Hydrogen Energy, Год журнала: 2024, Номер 59, С. 742 - 754

Опубликована: Фев. 10, 2024

Язык: Английский

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Perovskite for Electrocatalytic Oxygen Evolution at Elevated Temperatures

ChemSusChem, Год журнала: 2024, Номер 17(15)

Опубликована: Март 12, 2024

The development of advanced electrolysis technologies such as anion exchange membrane water electrolyzer (AEMWE) is central to the vision a sustainable energy future. Key realization AEMWE technology lies in exploration low-cost and high-efficient catalysts for facilitating anodic oxygen evolution reaction (OER). Despite tremendous efforts fundamental research, most today's OER works are conducted under room temperature, which deviates significantly with AEMWE's operating temperature (50-80 °C). To bridge this gap, it highly desirable obtain insights into catalytic behavior at elevated temperatures. Herein, using well-known perovskite catalyst Ba

Язык: Английский

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Novel Heterostructure‐Based CoFe and Cobalt Oxysulfide Nanocubes for Effective Bifunctional Electrocatalytic Water and Urea Oxidation

Small, Год журнала: 2024, Номер 20(26)

Опубликована: Янв. 14, 2024

The development of effective oxygen evolution reaction (OER) and urea oxidation (UOR) on heterostructure electrocatalysts with specific interfaces characteristics provides a distinctive character. In this study, nanocubes (NCs) comprising inner cobalt oxysulfide (CoOS) NCs outer CoFe (CF) layered double hydroxide (LDH) are developed using hydrothermal methodology. During the sulfidation process, divalent sulfur ions (S

Язык: Английский

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Dual‐Intermetallic Heterostructure on Hierarchical Nanoporous Metal for Highly Efficient Alkaline Hydrogen Electrocatalysis

Advanced Materials, Год журнала: 2024, Номер 36(38)

Опубликована: Июль 24, 2024

Constructing well-defined active multisites is an effective strategy to break linear scaling relationships develop high-efficiency catalysts toward multiple-intermediate reactions. Here, dual-intermetallic heterostructure composed of tungsten-bridged Co

Язык: Английский

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Catalytic electrode comprising a gas diffusion layer and bubble-involved mass transfer in anion exchange membrane water electrolysis: A critical review and perspectives

Journal of Energy Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Фев. 1, 2025

Язык: Английский

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