Electrochemical carbon monoxide reduction at high current density: Cell configuration matters

Chemical Engineering Journal, Год журнала: 2024, Номер 490, С. 151698 - 151698

Опубликована: Апрель 26, 2024

Electrochemical carbon monoxide reduction (COR) is an important link between the electrochemical CO2-to-CO and renewable production of C2+ chemicals. Along with development catalyst materials for selective efficient COR, it imperative to optimize electrolysis conditions cell parameters efficiently reduce CO at industrially relevant current density produce concentrated product streams. This study focuses on understanding fundamental differences in reaction selectivity during when same Cu was used three different configurations, namely, microfluidic, hybrid anode zero-gap, zero-gap electrolysers. In all cases, ethylene, acetate, ethanol, propanol formation confirmed densities (0.5–––1.2 A cm−2) reasonable voltages, albeit subtle differences. The local chemical environment electrode/electrolyte interface very each configuration leading distribution crossover anode. stresses importance architecture implies that comparing catalytic activity a studied configurations can lead inconsistent conclusions.

Язык: Английский

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Progress in Cu‐Based Catalyst Design for Sustained Electrocatalytic CO₂ to C₂₊ Conversion

Advanced Science, Год журнала: 2025, Номер unknown

Опубликована: Фев. 27, 2025

Abstract The electrocatalytic conversion of CO 2 into valuable multi‐carbon (C 2+ ) products using Cu‐based catalysts has attracted significant attention. This review provides a comprehensive overview recent advances in catalyst design to improve C selectivity and operational stability. It begins with an analysis the fundamental reaction pathways for formation, encompassing both established emerging mechanisms, which offer critical insights design. In situ techniques, essential validating these by real‐time observation intermediates material evolution, are also introduced. A key focus this is placed on how enhance through manipulation, particularly emphasizing catalytic site construction promote C─C coupling via increasing * coverage optimizing protonation. Additionally, challenge maintaining activity under conditions discussed, highlighting reduction active charged Cu species materials reconstruction as major obstacles. To address these, describes strategies preserve sites control including novel utilization mitigation reconstruction. By presenting developments challenges ahead, aims guide future conversion.

Язык: Английский

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Constructing a Localized Buffer Interlayer to Elevate High-Rate CO₂-to-C₂₊ Electrosynthesis

Journal of the American Chemical Society, Год журнала: 2025, Номер unknown

Опубликована: Май 13, 2025

Catalytic surface and interface engineering for the electrosynthesis of multicarbon chemicals from CO2 are widely investigated, while selective regulation mass transport reactant intermediate CO remains rarely explored, which is a critical challenge limiting C2+ production rate. Here, we strategically construct buffer interlayer with soluble ionic liquid (IL) additives between aqueous electrolyte catalytic surface, not only regulates microenvironment at different reaction stages but also stabilizes sites. The residence time extended in ascribed to attractive interactions via dipole-dipole hydrogen bonding. its enhanced by reactions within flow-through compact cell. Meanwhile, utilization ILs active sites (Cu2O-derived Cu) facilitating regeneration Cu2O through applied potentials. Consequently, products synthesized high rate partial current density 1.30 A/cm2 over 200 h. This concept further scaled 100 cm2 flow cell, exhibiting carbon loss below 6%. Such systematic investigation establishes general construction strategy electrolysis.

Язык: Английский

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Anion exchange membrane co-electrolysis of CO2 and water using CuOx nanoparticles-based gas diffusion electrode for the conversion of carbon dioxide into carbonaceous fuels

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 163798 - 163798

Опубликована: Май 1, 2025

Язык: Английский

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Effect of Areal Parameter of Sputtered Cu Layers on C₂ Products for CO₂ Electroreduction

ACS Applied Energy Materials, Год журнала: 2024, Номер 8(1), С. 640 - 649

Опубликована: Дек. 27, 2024

Язык: Английский

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Spatial effects define CO2 electrolysis systems

Chem Catalysis, Год журнала: 2024, Номер unknown, С. 101185 - 101185

Опубликована: Ноя. 1, 2024

Язык: Английский

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