Gas diffusion electrodes (GDEs) for electrochemical reduction of carbon dioxide, carbon monoxide, and dinitrogen to value-added products: a review

Energy & Environmental Science, Год журнала: 2021, Номер 14(4), С. 1959 - 2008

Опубликована: Янв. 1, 2021

Opportunities, challenges and design criteria associated with Gas diffusion electrodes (GDEs) for various electrochemical applications.

Язык: Английский

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Multi‐Sites Electrocatalysis in High‐Entropy Alloys

Advanced Functional Materials, Год журнала: 2021, Номер 31(47)

Опубликована: Авг. 26, 2021

Abstract High‐entropy alloys (HEAs) have attracted widespread attention in electrocatalysis due to their unique advantages (adjustable composition, complex surface, high tolerance, etc.). They allow for the formation of new and tailorable active sites multiple elements adjacent each other, interaction can be tailored by rational selection element configuration composition. However, it needs further explored catalyst design, elements, determination sites. This review article focuses on important progress multi‐sites HEAs. The classification is done basis catalytic reaction, including hydrogen evolution oxygen reduction alcohol oxidation carbon dioxide nitrogen reaction. Based experiments theories, a more in‐depth exploration activity HEAs will conducted, (the special role catalysis) effect. provide design some reactions, adjust compositions improve intrinsic activity. Furthermore, remaining challenges future directions promising research fields are also provided.

Язык: Английский

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Recent Progresses in Electrochemical Carbon Dioxide Reduction on Copper‐Based Catalysts toward Multicarbon Products

Advanced Functional Materials, Год журнала: 2021, Номер 31(37)

Опубликована: Июнь 26, 2021

Abstract Electrochemical carbon dioxide reduction reaction (CO 2 RR) offers a promising way of effectively converting CO to value‐added chemicals and fuels by utilizing renewable electricity. To date, the electrochemical single‐carbon products, especially monoxide formate, has been well achieved. However, efficient conversion more valuable multicarbon products (e.g., ethylene, ethanol, n ‐propanol, ‐butanol) is difficult still under intense investigation. Here, recent progresses in using copper‐based catalysts are reviewed. First, mechanism RR briefly described. Then, representative approaches catalyst engineering introduced toward formation RR, such as composition, morphology, crystal phase, facet, defect, strain, surface interface. Subsequently, key aspects cell for including electrode, electrolyte, design, also discussed. Finally, advances summarized some personal perspectives this research direction provided.

Язык: Английский

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Defect engineering of two-dimensional materials for advanced energy conversion and storage

Chemical Society Reviews, Год журнала: 2023, Номер 52(5), С. 1723 - 1772

Опубликована: Янв. 1, 2023

Defective two-dimensional (2D) materials show huge potential for energy-related fields. This review overviews the formation/evolution mechanisms and engineering strategies of defects in 2D materials, which enable enhanced electrode reaction kinetics.

Язык: Английский

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NiSn Atomic Pair on an Integrated Electrode for Synergistic Electrocatalytic CO₂ Reduction

Angewandte Chemie International Edition, Год журнала: 2020, Номер 60(13), С. 7382 - 7388

Опубликована: Дек. 15, 2020

Abstract The development of efficient electrocatalysts for the CO 2 reduction reaction (CO RR) remains a challenge. Demonstrated here is NiSn atomic‐pair electrocatalyst (NiSn‐APC) on hierarchical integrated electrode, which exhibits synergistic effect in simultaneously promoting activity and selectivity RR to formate. atomic pair consists adjacent Ni Sn, each coordinated with four nitrogen atoms (N 4 ‐Ni‐Sn‐N ). as‐prepared NiSn‐APC displays exceptional formate turnover frequency 4752 h −1 , productivity 36.7 mol g Sn an utilization degree active sites (57.9 %), are superior previously reported single‐atomic catalysts. Both experimental data density‐functional theory calculations verify electron redistribution imposed by Ni, reduces energy barrier *OCHO intermediate makes this potential‐determining step thermodynamically spontaneous. This catalysis provides successful paradigm rational design preparation enhanced performance.

Язык: Английский

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“Two Ships in a Bottle” Design for Zn–Ag–O Catalyst Enabling Selective and Long-Lasting CO₂ Electroreduction

Journal of the American Chemical Society, Год журнала: 2021, Номер 143(18), С. 6855 - 6864

Опубликована: Апрель 14, 2021

Electrochemical CO2 reduction (CO2RR) using renewable energy sources represents a sustainable means of producing carbon-neutral fuels. Unfortunately, low efficiency, poor product selectivity, and rapid deactivation are among the most intractable challenges CO2RR electrocatalysts. Here, we strategically propose "two ships in bottle" design for ternary Zn–Ag–O catalysts, where ZnO Ag phases twinned to constitute an individual ultrafine nanoparticle impregnated inside nanopores ultrahigh-surface-area carbon matrix. Bimetallic electron configurations modulated by constructing interface, density reconfiguration arising from delocalization enhances stabilization *COOH intermediate favorable CO production, while promoting selectivity suppressing HCOOH generation altering rate-limiting step toward high thermodynamic barrier forming HCOO*. Moreover, pore-constriction mechanism restricts bimetallic particles nanosized dimensions with abundant heterointerfaces exposed active sites, meanwhile prohibiting detachment agglomeration nanoparticles during enhanced stability. The designed catalysts realize 60.9% efficiency 94.1 ± 4.0% Faradaic CO, together remarkable stability over 6 days. Beyond providing high-performance electrocatalyst, this work presents promising catalyst-design strategy efficient conversion.

Язык: Английский

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Enabling storage and utilization of low-carbon electricity: power to formic acid

Energy & Environmental Science, Год журнала: 2021, Номер 14(3), С. 1194 - 1246

Опубликована: Янв. 1, 2021

Power to formic acidviaCO₂hydrogenation or electrochemical CO₂reduction has great potential enable a complete cycle with acid power for the storage and utilization of low-carbon electricity at scale multi-gigatonnes per year.

Язык: Английский

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Pore-Edge Tailoring of Single-Atom Iron–Nitrogen Sites on Graphene for Enhanced CO₂ Reduction

ACS Catalysis, Год журнала: 2020, Номер 10(19), С. 10803 - 10811

Опубликована: Сен. 2, 2020

Hosting atomically dispersed nitrogen-coordinated iron sites (Fe–N4) on graphene offers unique opportunities for driving electrochemical CO2 reduction reaction (CO2RR) to CO. However, the strong adsorption of *CO Fe–N4 site embedded in intact limits current density due slow CO desorption process. Herein, we report how manipulation pore edges alters local electronic structure isolated and improves their intrinsic reactivity prompting generation. We demonstrate that constructing holes basal plane support can significantly enhance its CO2RR compared pore-deficient graphene-supported counterpart, exhibiting a Faradaic efficiency 94% turnover frequency 1630 h–1 at 0.58 V vs RHE. Mechanistic studies reveal incorporation results downshifting d-band center Fe sites, which weakens strength Fe–C bond when intermediate adsorbs edge-hosted Fe–N4, thus boosting evolution rates. These findings suggest engineering renders way design high-performance single-atom catalysts.

Язык: Английский

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Address the “alkalinity problem” in CO2 electrolysis with catalyst design and translation

Joule, Год журнала: 2021, Номер 5(4), С. 737 - 742

Опубликована: Март 23, 2021

Язык: Английский

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Atomically dispersed single Ni site catalysts for high-efficiency CO₂ electroreduction at industrial-level current densities

Energy & Environmental Science, Год журнала: 2022, Номер 15(5), С. 2108 - 2119

Опубликована: Янв. 1, 2022

Single metal site Ni–N–C catalysts were designed concerning the particle size, content, and coordination structure for efficient CO 2 reduction.

Язык: Английский

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