Surface reconstruction and directed electron transport in NiSe2/MoSe2 Mott-Schottky heterojunction catalysts promote urea-assisted water splitting

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 341, P. 123312 - 123312

Published: Sept. 20, 2023

Language: Английский

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IrMo Nanocluster-Doped Porous Carbon Electrocatalysts Derived from Cucurbit[6]uril Boost Efficient Alkaline Hydrogen Evolution

Journal of the American Chemical Society, Journal Year: 2023, Volume and Issue: 145(30), P. 16548 - 16556

Published: July 19, 2023

Electrocatalysts based on noble metals have been proven efficient for high-purity hydrogen production. However, the sluggish kinetics of evolution reaction (HER) in alkaline media caused by high water dissociation energy largely hampers this electrochemical process. To improve electrocatalytic activity, we fabricate an effective porous carbon matrix derived from cucurbit[6]uril using a template-free method to support iridium–molybdenum (IrMo) nanoclusters. As proof concept, resulting IrMo-doped electrocatalyst (IrMo-CBC) was found boost HER significantly. Owing unique in-plane hole structure and nitrogen-rich backbone as well ultrafine IrMo nanoclusters, IrMo-CBC exhibits pronounced activity with extremely low overpotential 12 mV at 10 mA cm–2, ultrasmall Tafel slope (28.06 dec–1), superior faradic efficiency (98%), TOF 11.6 H2 s–1 50 mV, outperforming most iridium-based electrocatalysts commercial Pt/C.

Language: Английский

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In situ electrochemical synthesis of superhydrophilic NiCoMn trimetallic-alloy nanosheets via the dynamic hydrogen bubble template method for developing high current density hydrogen production electrocatalysts

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(40), P. 27558 - 27569

Published: Jan. 1, 2024

A 3D, stable, effective and superhydrophilic electrocatalyst was developed via a binder-free electrodeposition method for the hydrogen evolution reaction at high applied current densities.

Language: Английский

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A New (De)Intercalation MXene/Bi Cathode for Ultrastable Aqueous Zinc‐Ion Battery

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(5)

Published: March 28, 2023

Abstract The emerging aqueous zinc‐ion batteries (ZIBs) have received extensive attention and research due to their unique advantages of low cost, safety, environmental friendliness. However, the development appropriate cathode materials improve battery performance remains a major challenge. Herein, new MXene Bi (MXene/Bi) composite material is first applied as (de)intercalation ZIB. dispersed nanosheets in greatly conductivity hydrophilicity electrode, prevent stacking volume expansion charge/discharge process 2D fragments. experimental results show that MXene/Bi electrode has remarkable capacity ultralong life. Next, good kinetics energy storage mechanism ZIB are revealed through abundant electrochemical tests ex situ characterization. quasi‐solid‐state (QSS) also constructed, showing superior performance, flexibility, pressure resistance, heat resistance. Besides, QSS can be used directly self‐powered sensor monitor external real time based on response current. This study not only demonstrates potential for ZIBs, but offers feasible path explore design next generation high‐performance multifunctional ZIBs.

Language: Английский

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Effects of activation method on biomass carbon-based materials used for electrochemical hydrogen evolution reaction catalyst

International Journal of Hydrogen Energy, Journal Year: 2023, Volume and Issue: 51, P. 1 - 19

Published: Aug. 19, 2023

Language: Английский

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Bubbles Management for Enhanced Catalytic Water Splitting Performance

Catalysts, Journal Year: 2024, Volume and Issue: 14(4), P. 254 - 254

Published: April 11, 2024

Water splitting is widely acknowledged as an efficient method for hydrogen production. In recent years, significant research efforts have been directed towards developing cost-effective electrocatalysts. However, the management of bubbles formed on electrode surface during electrolysis has largely overlooked. These can impede active sites, resulting in decreased catalytic performance and stability, especially at high current densities. Consequently, this impediment affects energy conversion efficiency water splitting. To address these challenges, review offers a comprehensive overview advanced strategies aimed improving mitigating obstructive effects primarily involve utilization experimental apparatus to observe bubble-growth behavior, encompassing nucleation, growth, detachment stages. Moreover, examines factors influencing bubble formation, considering both mechanical behaviors internal factors. Additionally, design water-splitting catalysts discussed, focusing modifying electrode-surface characteristics. Finally, concludes by summarizing potential large-scale industrial production identifying future directions achieving

Language: Английский

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Rise of wood-based catalytic electrodes for large-scale hydrogen production

Materials Chemistry Frontiers, Journal Year: 2024, Volume and Issue: 8(6), P. 1591 - 1610

Published: Jan. 1, 2024

The wood-based pretreatment strategy and active site loading of catalytic electrodes make them valuable for water electrolysis, they hold significant potential industrial-scale electrolysis.

Language: Английский

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Superhydrophilic and Underwater Superaerophobic Dual-Function Peony-Shaped Selenide Micro–nano Array Self-Supported Electrodes for High-Efficiency Overall Water Splitting Driven by Renewable Energy

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(37), P. 49349 - 49361

Published: Sept. 4, 2024

With the intensification of global environmental pollution and resource scarcity, hydrogen has garnered significant attention as an ideal alternative to fossil fuels due its high energy density nonpolluting nature. Consequently, urgent development electrocatalytic water-splitting electrodes for production is imperative. In this study, a superwetting selenide catalytic electrode with peony-flower-shaped micronano array (MoS

Language: Английский

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Photothermal interface with high-adhesive superhydrophobicity to construct vapor splitting module for hydrogen evolution from seawater

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 346, P. 123743 - 123743

Published: Jan. 17, 2024

Language: Английский

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Tailoring hydrophilic and hydrophobic microenvironments for gas–liquid–solid triphase electrochemical reactions

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(17), P. 10012 - 10043

Published: Jan. 1, 2024

The review summarizes recent studies aimed at controlling the hydrophilic and hydrophobic microenvironments of electrodes, addressing gas–liquid–solid triphase challenges encountered in both gas-evolving gas-consuming reactions.

Language: Английский

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