Local photothermal and photoelectric effect synergistically boost hollow CeO2/CoS2 heterostructure electrocatalytic oxygen evolution reaction

Journal of Colloid and Interface Science, Journal Year: 2022, Volume and Issue: 628, P. 663 - 672

Published: July 22, 2022

Language: Английский

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Dinuclear metal synergistic catalysis for energy conversion

Chemical Society Reviews, Journal Year: 2023, Volume and Issue: 52(9), P. 3170 - 3214

Published: Jan. 1, 2023

An exclusive review focusing on catalysts exhibiting the dinuclear metal synergistic catalysis (DMSC) effect for energy conversion reactions is presented.

Language: Английский

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Flower‐Like Amorphous MoO_3−x Stabilized Ru Single Atoms for Efficient Overall Water/Seawater Splitting

Advanced Science, Journal Year: 2023, Volume and Issue: 10(18)

Published: April 24, 2023

Benefitting from the maximum atom utilization efficiency, special size quantum effects and tailored active sites, single-atom catalysts (SACs) have been promising candidates for bifunctional toward water splitting. Besides, due to unique structure properties, some amorphous materials found possess better performance than their crystalline counterparts in electrocatalytic Herein, by combining advantages of ruthenium (Ru) single atoms substrates, molybdenum-based oxide stabilized single-atomic-site Ru (Ru SAs-MoO

Language: Английский

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Hollow Heterostructured Nanocatalysts for Boosting Electrocatalytic Water Splitting

The Chemical Record, Journal Year: 2022, Volume and Issue: 23(2)

Published: Oct. 4, 2022

The implementation of electrochemical water splitting demands the development and application electrocatalysts to overcome sluggish reaction kinetics hydrogen/oxygen evolution (HER/OER). Hollow nanostructures, particularly for hollow heterostructured nanomaterials can provide multiple solutions accelerate HER/OER owing their advantageous merit. Herein, recent advances nanocatalysts excellent performance are systematically summarized. Starting by illustrating intrinsically features heterostructures, achievements in engineering also highlighted with focus on structural design, interfacial engineering, composition regulation, catalytic evaluation. Finally, some perspective insights future challenges electrocatalytic discussed.

Language: Английский

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Coupled and decoupled electrochemical water splitting for boosting hydrogen evolution: A review and perspective

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 510, P. 215837 - 215837

Published: April 9, 2024

Language: Английский

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Vanadium-Doped Nickel Cobalt Layered Double Hydroxide: A High-Performance Oxygen Evolution Reaction Electrocatalyst in Alkaline Medium

Inorganic Chemistry, Journal Year: 2022, Volume and Issue: 61(10), P. 4502 - 4512

Published: March 1, 2022

Vast attention from researchers is being given to the development of suitable oxygen evolution reaction (OER) electrocatalysts via water electrolysis. Being highly abundant, use transition-metal-based OER catalysts has been attractive more recently. Among various electrocatalysts, layered double hydroxides (LDHs) gained special owing their high stability under conditions. In this work, we have reported synthesis trimetallic NiCoV-LDH a simple wet-chemical method. The synthesized possesses aggregated sheet-like structures and screened for studies in alkaline medium. study activity, as-prepared catalyst demanded 280 mV overpotential was 42 less than essential pristine NiCo-LDH. Moreover, doping third metal into NiCo-LDH system might lead an increase TOF values by almost three times. Apart this, electronic structural evaluation confirms that V3+ could synergistically favor electron transfer among ions, which turn increases activity prepared toward OER.

Language: Английский

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Interfacial built-in electric-field for boosting energy conversion electrocatalysis

Nanoscale Horizons, Journal Year: 2023, Volume and Issue: 8(4), P. 441 - 452

Published: Jan. 1, 2023

A critical review of built-in electric fields for the applications in electrocatalytic reactions is organized by focusing on fundamental concepts, modification strategies, and positive influences promotion catalytic performance.

Language: Английский

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Interfacial Hydrogen Spillover on Pd-TiO₂ with Oxygen Vacancies Promotes Formate Electrooxidation

ACS Energy Letters, Journal Year: 2023, Volume and Issue: 8(9), P. 3945 - 3954

Published: Aug. 28, 2023

Pd-based catalysts are crucial in direct formate fuel cells owing to their high stability and selectivity for the oxidation reaction (FOR) CO2, avoiding carbonaceous poisoning species (e.g., COad, CHx) alkaline media. However, kinetics of electrocatalysts considerably impeded by unfavorable adsorption hydrogen (Had), which serve as primary intermediators occlude active sites. Herein, we crafted electron-rich Pd nanoparticles on a TiO2 support with oxygen vacancies (Pd/Ov-TiO2) improve Had desorption. The as-prepared Pd/Ov-TiO2 exhibited mass activity 4.16 A mgPd–1, outperforming Pd/TiO2 without commercial Pd/C 1.41 2.72 times, respectively. Experimental characterizations density functional theory calculations revealed that oxygen-vacant can concurrently downshift d-band center facilitate spillover, thereby accelerating desorption FOR kinetics. Our findings provide strategy refine broader electrochemical uses.

Language: Английский

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Edge-Hosted Mn-N₄-C₁₂ Site Tunes Adsorption Energy for Ultralow-Temperature and High-Capacity Solid-State Zn-Air Battery

ACS Nano, Journal Year: 2023, Volume and Issue: 17(10), P. 9565 - 9574

Published: May 9, 2023

Robust operation of Zn-air batteries (ZABs) with high capacity and excellent energy efficiency is desirable for practical harsh applications, whose bottlenecks are mainly originated from the sluggish oxygen catalytic kinetics unstable Zn|electrolyte interface. In this work, we synthesized edge-hosted Mn-N4-C12 coordination supported on N-doped defective carbon (Mn1/NDC) catalyst, exhibiting a good bifunctional performance reduction/evolution reaction (ORR/OER) low potential gap 0.684 V. Theoretical calculation reveals that displayed lowest overpotential ORR/OER owing to decreased adsorption free OH*. The Mn1/NDC-based aqueous ZABs deliver impressive rate performance, ultralong discharging lifespan, stability. Notably, assembled solid-state demonstrate 1.29 Ah, large critical current density 8 mA cm-2, robust cycling stability at -40 °C, which should be attributed Mn1/NDC anti-freezing electrolyte (SSE). Meanwhile, zincophilic nanocomposite SSE polarity accounts stable Zn|SSE interface compatibility. This work not only highlights importance atomic structure design electrocatalysts ultralow-temperature high-capacity but also spurs development sustainable Zn-based conditions.

Language: Английский

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Etched High-Entropy Prussian Blue Analogues as Trifunctional Catalysts for Water, Ethanol, and Urea Electrooxidation

Inorganic Chemistry, Journal Year: 2023, Volume and Issue: 62(28), P. 11271 - 11277

Published: June 29, 2023

The introduction of high-entropy and high specific surface area into Prussian blue analogues (PBAs) has yet to create interest in the field electrocatalytic small-molecule oxidation reactions. Herein, we synthesize a novel class (HE) PBAs with via simple NH3·H2O-etching strategy systematically investigate performance HE-PBA toward water, ethanol, urea Importantly, NH3·H2O-etched (denoted as HE-PBA-e) demonstrated enhanced compared pristine HE-PBA, reaching 10 mA cm-2 potentials 1.56, 1.41, 1.37 V for oxygen evolution reaction (OER), ethanol (EOR), (UOR), respectively. Deep characterizations suggest that NH3·H2O etching treatment not only creates rich nanopores enlarge boosts mass transport electron transfer but also facilitates formation high-valence metal oxides improve intrinsic activity. This demonstration how increasing state metals will serve governing principle rational design more advanced HE-PBAs electrooxidation small molecules.

Language: Английский

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