International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 97, P. 38 - 45
Published: Nov. 28, 2024
Language: Английский
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(25)
Published: Jan. 30, 2024
Abstract Oxygen vacancy engineering is a promising strategy to enhance the electrocatalytic activities in conventional metal oxide electrocatalysts. However, utilization of oxygen vacancies high‐entropy oxides remains unknown, primarily due challenges associated with facile introduction and explanation their roles complex systems. Herein, into realized unique high entropy‐driven role for evolution reaction (OER) process revealed. A low‐temperature surface carbonization–decarbonization approach developed introduce regulate spinel (HEOs). The HEOs can both facilitate pre‐oxidation faster OH − adsorption induce bridge site pathway easier deprotonation, distinctive where favor * yet hinder deprotonation. Consequently, as‐prepared (HEOs‐Ov) exhibit superior OER activities, outperforming most reported oxide‐based Besides, this universal method be extended other different configuration entropies scaled up. work paves way exploration toward electrocatalysis fields.
Language: Английский
Citations
55
Science Advances, Journal Year: 2024, Volume and Issue: 10(23)
Published: June 5, 2024
Alloying has proven power to upgrade metallic electrocatalysts, while the traditional alloys encounter limitation for optimizing electronic structures of surface sites in a continuous manner. High-entropy (HEAs) overcome this by manageably tuning adsorption/desorption energies reaction intermediates. Recently, marriage nanotechnology and HEAs made considerable progresses renewable energy technologies, showing two important trends size diminishment multidimensionality. This review is dedicated summarizing recent advances that are rationally designed electrocatalysis. We first explain advantages as electrocatalysts from three aspects: high entropy, nanometer, multidimension. Then, several structural regulation methods proposed promote electrocatalysis HEAs, involving thermodynamically nonequilibrium synthesis, regulating (sub-)nanosize anisotropic morphologies, well engineering atomic ordering. The general relationship between electrocatalytic properties further discussed. Finally, we outline remaining challenges field, aiming inspire more sophisticated HEA-based nanocatalysts.
Language: Английский
Citations
25
Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(7), P. 3579 - 3605
Published: Jan. 1, 2024
After sixty years of development, electrochemical optical spectroscopy has evolved from the early phase proof-of-concept to an advanced with various spectroscopic modes and contributed significantly field electrochemistry.
Language: Английский
Citations
18
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(37)
Published: June 27, 2024
The vast number of element combinations and the explosive growth composition space pose significant challenges to development high-entropy alloys (HEAs). Here, we propose a procedural research method aimed at accelerating discovery efficient electrocatalysts for oxygen reduction reaction (ORR) based on Pt-based quinary HEAs. begins with an library provided by large language model (LLM), combined microscale precursor printing pulse high-temperature synthesis techniques prepare multi-element combination HEA array in one step. Through high-throughput measurement using scanning electrochemical cell microscopy (SECCM), precise identification highly active exploration specific are achieved. Advantageous further validated practical electrocatalytic evaluations. contributions individual sites synergistic effects among elements such HEAs enhancing activity elucidated via density functional theory (DFT) calculations. This integrates experiments, catalyst validation, DFT calculations, providing new pathway materials field energy catalysis.
Language: Английский
Citations
18
Chinese Chemical Letters, Journal Year: 2023, Volume and Issue: 35(6), P. 109073 - 109073
Published: Sept. 14, 2023
Language: Английский
Citations
37
Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 63(1)
Published: Sept. 29, 2023
Abstract In the evolving field of electrocatalysis, thermal treatment nano‐electrocatalysts has become an essential strategy for performance enhancement. This review systematically investigates impact various treatments on catalytic potential nano‐electrocatalysts. The focus encompasses in‐depth analysis changes induced in structural, morphological, and compositional properties, as well alterations electro‐active surface area, chemistry, crystal defects. By providing a comprehensive comparison commonly used techniques, such annealing, calcination, sintering, pyrolysis, hydrothermal, solvothermal methods, this serves scientific guide selecting right technique favorable temperature to tailor optimal electrocatalysis. resultant modifications activity are explored across key electrochemical reactions (bio)sensing, degradation, oxygen reduction reaction, hydrogen evolution overall water splitting, fuel cells, carbon dioxide reaction. Through detailed examination underlying mechanisms synergistic effects, contributes fundamental understanding role enhancing electrocatalytic properties. insights provided offer roadmap future research aimed at optimizing nanomaterials, fostering development next‐generation sensors energy conversion technologies.
Language: Английский
Citations
28
Angewandte Chemie, Journal Year: 2023, Volume and Issue: 136(1)
Published: Sept. 29, 2023
Abstract In the evolving field of electrocatalysis, thermal treatment nano‐electrocatalysts has become an essential strategy for performance enhancement. This review systematically investigates impact various treatments on catalytic potential nano‐electrocatalysts. The focus encompasses in‐depth analysis changes induced in structural, morphological, and compositional properties, as well alterations electro‐active surface area, chemistry, crystal defects. By providing a comprehensive comparison commonly used techniques, such annealing, calcination, sintering, pyrolysis, hydrothermal, solvothermal methods, this serves scientific guide selecting right technique favorable temperature to tailor optimal electrocatalysis. resultant modifications activity are explored across key electrochemical reactions (bio)sensing, degradation, oxygen reduction reaction, hydrogen evolution overall water splitting, fuel cells, carbon dioxide reaction. Through detailed examination underlying mechanisms synergistic effects, contributes fundamental understanding role enhancing electrocatalytic properties. insights provided offer roadmap future research aimed at optimizing nanomaterials, fostering development next‐generation sensors energy conversion technologies.
Language: Английский
Citations
28
Chemical Communications, Journal Year: 2023, Volume and Issue: 59(53), P. 8205 - 8221
Published: Jan. 1, 2023
Recent advances in Ni- and Fe-based electrocatalysts for hydrogen production based on the traditional novel alkaline water electrolysis processes are highlighted overviewed.
Language: Английский
Citations
24
Chemical Science, Journal Year: 2024, Volume and Issue: 15(23), P. 8664 - 8722
Published: Jan. 1, 2024
High-entropy alloys hold significant promise as electrode materials, even from industrial aspect. This potential arises their ability to optimize electronic structures and reaction sites, stemming complex adjustable composition.
Language: Английский
Citations
17
Energy & Fuels, Journal Year: 2024, Volume and Issue: 38(8), P. 7292 - 7301
Published: March 28, 2024
Designing a cost-effective and highly active thin film electrocatalyst is crucial for expediting the kinetics of oxygen evolution reaction (OER) clean hydrogen production via water electrolysis. Herein, we report fabrication efficient robust OER catalysts by depositing films iron–vanadium oxide (FeVOx) on nickel foam (NF) using aerosol-assisted chemical vapor deposition (AACVD). Different morphological variants FeVOx catalyst prepared within 40 to 120 min were thoroughly investigated oxidation in 1.0 M KOH solution. The corresponding electrochemical experiments validate exceptional performance FeVOx-40 catalyst, as current density sharply increases from 10 1000 mA cm–2 narrow overpotential range 270–330 mV (vs RHE). Moreover, this retains its initial morphology composition even after performing continuous operation 100 h. outstanding catalytic was credited distinctive synergy with underlying NF support, which enhanced overall conductivity system. straightforward effective bimetallic system (FeVOx/NF) enable communities develop utilize novel electrocatalysts dissociation.
Language: Английский
Citations
16