Hollow fiber gas-diffusion electrodes with tailored crystal facets for tuning syngas production in electrochemical CO2 reduction

Chemical Engineering Journal, Год журнала: 2024, Номер 490, С. 151651 - 151651

Опубликована: Апрель 24, 2024

Язык: Английский

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Organic-inorganic hybrid-based S-scheme heterostructure in solar-to-fuel conversion

Journal of Material Science and Technology, Год журнала: 2025, Номер unknown

Опубликована: Март 1, 2025

Язык: Английский

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Rational Designing Microenvironment of Gas‐Diffusion Electrodes via Microgel‐Augmented CO₂ Availability for High‐Rate and Selective CO₂ Electroreduction to Ethylene

Advanced Science, Год журнала: 2024, Номер 11(40)

Опубликована: Авг. 29, 2024

Abstract Efficient electrochemical CO 2 reduction reaction (CO RR) requires advanced gas‐diffusion electrodes (GDEs) with tunned microenvironment to overcome low availability in the vicinity of catalyst layer. Herein, for first time, pyridine‐containing microgels‐augmented is presented Cu O‐based GDE high‐rate ethylene, owing presence ‐phil microgels amine moieties. Microgels as three‐dimensional polymer networks act micro‐reservoirs engineer and boost local availability. The superior ethylene production performance modified by 4‐vinyl pyridine microgels, compared diethylaminoethyl methacrylate indicates bifunctional effect pyridine‐based enhance availability, electrocatalytic reduction. While Faradaic efficiency (FE) without was capped at 43% 300 mA cm −2 , showed 56% FE 700 . A similar trend observed zero‐gap design, GDEs 58% −4.0 cell voltage (>350 current density), resulting over 2‐fold improvement production. This study showcases use a higher rate RR‐to‐C 2+ opening an avenue several other more selective efficient electrolysis.

Язык: Английский

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Highly Selective Acidic CO₂ Electroreduction with Large Current on Polypyrrole‐Modified Ag Catalyst by Local Microenvironment Modulation

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 2, 2025

Abstract Electrocatalytic carbon dioxide reduction (CO 2 RR) holds great promise for capture and utilization. In acidic media, CO RR enables efficient conversion, but with low selectivity due to the competitive hydrogen evolution reaction (HER) catalyst corrosion. Herein, conductive polymer polypyrrole (PPy) coated Ag nanoparticles (NPs) catalysts (Ag@PPy) different thicknesses are designed synthesized, which could create a hydrophobic environment that reduces accessibility of H O NPs thereby inhibiting HER. The coating PPy layer also protects from corrosion improves stability system. Among them, Ag@PPy‐2 appropriate thickness showed up 91.7% electrocatalytic high durability in electrolyte at −300 mA cm −2 . Density functional theory (DFT) calculation shows not only inhibit HER, reduce energy barrier, improve efficiency CO. This study may provide some new ideas design advanced selective by local microenvironmental engineering.

Язык: Английский

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Studying CeO₂-modified defective carbon as an electrocatalyst for electrochemical reduction of CO₂

RSC Advances, Год журнала: 2025, Номер 15(6), С. 4562 - 4572

Опубликована: Янв. 1, 2025

In this study, high temperature pyrolytic carbon materials were used to introduce defect sites. At the same time, oxygen vacancies on surface of cerium enhance adsorption CO 2 and electrocatalytic activity.

Язык: Английский

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Efficient interfacial charge transfer of CeO2/Bi19Br3S27 S-scheme heterojunction for boosted photocatalytic CO2 reduction

Acta Physico-Chimica Sinica, Год журнала: 2025, Номер unknown, С. 100065 - 100065

Опубликована: Фев. 1, 2025

Язык: Английский

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Unveiling co-acting effects of potassium and hydroxide ions on carbon dioxide reduction reaction selectivity

Journal of Colloid and Interface Science, Год журнала: 2025, Номер 688, С. 591 - 599

Опубликована: Фев. 26, 2025

Язык: Английский

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NiB as a Non-noble Metal Cocatalyst Electronic Bridge to Enhance the Photocatalytic Hydrogen Production of Cd3(C3N3S3)2

Chemical Research in Chinese Universities, Год журнала: 2025, Номер unknown

Опубликована: Март 3, 2025

Язык: Английский

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Advances and Challenges of Carbon‐Free Gas‐Diffusion Electrodes (GDEs) for Electrochemical CO₂ Reduction

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 26, 2024

Abstract Electrochemical CO 2 reduction reaction (CO RR) coupled with renewable electricity holds promises for efficient mitigation of carbon emission impacts on the environment and turning into valuable chemicals. One important task in RR development is design fabrication electrodes stable operation long term. Gas‐diffusion (GDEs) have been employed to continuously feed electrolyzers. Despite significant advances GDE tailoring properties, present GDEs often suffer from critical issue flooding due electrowetting carbon‐based substrates, which hinders transition industrial application. To address flooding, intrinsically hydrophobic polymeric substrates recently fabricated shown promising performances. Herein, challenges associated carbon‐free are reviewed RR. This review first briefly outlines electrolyzers basics. Through discussion around shortcomings conventional GDEs, most recent efforts resolve summarized. Subsequently, advances, advantages, elaborated. Finally, priorities future studies suggested, aim support advancement scale‐up extend them other electrochemical systems where gas electrolyte contact.

Язык: Английский

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Dynamic Confinement and Interfacial Engineering in Mesoporous Ag@SiO₂ Core–Shell Architecture for Acidic Electrocatalytic CO₂‐to‐Methane Conversion

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 5, 2025

Abstract Designing electrocatalysts that can simultaneously suppress the hydrogen evolution reaction (HER) and stabilize multistep carbon intermediates remains a key challenge for electroreduction of CO 2 to methane (CH 4 ) under acidic conditions. Herein, dynamic restraint strategy is proposed achieve efficient synthesis CH in electrolyte by synergistic regulation proton transport interfacial charge distribution mesoporous silica coated silver nanoparticles (Ag@SiO ‐ M h). At high current density −132.26 mA cm −2 , Faradaic efficiency reaches 56.6% stable long time. The core innovation lies constructing bifunctional mechanism at metal‐non‐metal hybrid interface: controllable mesopores SiO form spatially confined proton‐relay channels, Si─O─H groups enriched on surface dynamically regulate supply through hydrogen‐bond network, which accurately drives *CO─*H coupling while inhibiting 60% HER. And, electron transfer from Ag significantly reduces energy barrier *CO protonation, promoting kinetic‐crucial *H─*CO pathway incline toward formation. This breaks bottleneck mutual restriction between activity stability traditional catalyst design, provides universal solution complex electrocatalytic systems with multi‐intermediate regulation.

Язык: Английский

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