Chemical Engineering Journal, Год журнала: 2024, Номер unknown, С. 158080 - 158080
Опубликована: Ноя. 1, 2024
Язык: Английский
Chemical Reviews, Год журнала: 2024, Номер 124(21), С. 11767 - 11847
Опубликована: Июль 5, 2024
Anthropogenic activities related to population growth, economic development, technological advances, and changes in lifestyle climate patterns result a continuous increase energy consumption. At the same time, rare metal elements frequently deployed as catalysts processes are not only costly view of their low natural abundance, but availability is often further limited due geopolitical reasons. Thus, electrochemical storage conversion with earth-abundant metals, mainly form single-atom (SACs), highly relevant timely technologies. In this review application SACs electrocatalytic chemicals fuels or products high content discussed. The oxygen reduction reaction also appraised, which primarily harnessed fuel cell technologies metal-air batteries. coordination, active sites, mechanistic aspects transition analyzed for two-electron four-electron pathways. Further, water splitting toward green hydrogen discussed terms evolution reaction. Similarly, production ammonia clean via nitrogen portrayed, highlighting potential single species.
Язык: Английский
Процитировано
48
Nano-Micro Letters, Год журнала: 2024, Номер 16(1)
Опубликована: Фев. 29, 2024
Abstract The exploration of sustainable energy utilization requires the implementation advanced electrochemical devices for efficient conversion and storage, which are enabled by usage cost-effective, high-performance electrocatalysts. Currently, heterogeneous atomically dispersed catalysts considered as potential candidates a wide range applications. Compared to conventional catalysts, metal atoms in carbon-based have more unsaturated coordination sites, quantum size effect, strong metal–support interactions, resulting exceptional catalytic activity. Of these, dual-atomic (DACs) attracted extensive attention due additional synergistic effect between two adjacent atoms. DACs advantages full active site exposure, high selectivity, theoretical 100% atom utilization, ability break scaling relationship adsorption free on sites. In this review, we summarize recent research advancement DACs, includes (1) comprehensive understanding synergy atomic pairs; (2) synthesis DACs; (3) characterization methods, especially aberration-corrected scanning transmission electron microscopy synchrotron spectroscopy; (4) energy-related last part focuses great catalysis small molecules, such oxygen reduction reaction, CO 2 hydrogen evolution N reaction. future challenges opportunities also raised prospective section.
Язык: Английский
Процитировано
33
Advanced Materials, Год журнала: 2024, Номер unknown
Опубликована: Июнь 13, 2024
Single-atom electrocatalysts (SACs) are a class of promising materials for driving electrochemical energy conversion reactions due to their intrinsic advantages, including maximum metal utilization, well-defined active structures, and strong interface effects. However, SACs have not reached full commercialization broad industrial applications. This review summarizes recent research achievements in the design crucial electrocatalytic on sites, coordination, substrates, as well synthesis methods. The key challenges facing activity, selectivity, stability, scalability, highlighted. Furthermore, it is pointed out new strategies address these increasing activity enhancing utilization improving optimizing local environment, developing fabrication techniques, leveraging insights from theoretical studies, expanding potential Finally, views offered future direction single-atom electrocatalysis toward commercialization.
Язык: Английский
Процитировано
31
Advanced Functional Materials, Год журнала: 2025, Номер unknown
Опубликована: Янв. 10, 2025
Abstract N‐doped carbon confined alloy catalysts possess considerable potential in facilitating oxygen electrocatalytic reaction and consequent applications metal air batteries, but the sluggish catalytic kinetics high barrier of reduction (ORR) remain bottleneck restricting its further development. Here, a novel CoFe‐NiFe biphase nanoheterojunction encapsulated within nanotubes (CoFe‐NiFe@NCNT) is fabricated via hydrothermal carbothermic approach. Owing to plentiful active sites electrical conductance, difference between OER ORR amounts merely 0.68 V. Simultaneously, performance Zn‐air Mg‐air batteries assembled by CoFe‐NiFe@NCNT serving as air‐cathode are superior that commercial Pt/C + RuO 2 . The DFT outcomes reveal transformation *OOH *O rate‐determining step (RDS) ORR/OER. Also, synergy heterojunction conducive reduce energy barrier. This study offers profound understanding toward structural design electrocatalysts utilization metal‐air for portable wearable electronic apparatuses.
Язык: Английский
Процитировано
4
Journal of Power Sources, Год журнала: 2024, Номер 608, С. 234623 - 234623
Опубликована: Май 2, 2024
Язык: Английский
Процитировано
17
Advanced Functional Materials, Год журнала: 2024, Номер unknown
Опубликована: Сен. 27, 2024
Abstract Integrating active sites for oxygen reduction and evolution reactions (ORR OER) is pivotal advancing bifunctional electrodes. Addressing the geometric/electronic properties of these essential to disrupt linear scaling relationship between adsorption desorption complex intermediates. Herein, a proof‐of‐concept presented constructing asymmetric trinuclear employing both composition‐ size‐based coupling strategies. These comprise ORR‐active Fe single atom (Fe SA ), OER‐active atomically clustered species AC Ni as modulators. This AC‐SA ‐Ni @N‐doped carbon exhibits excellent catalytic activities, with narrow potential gap 0.661 V an ORR half‐wave 0.931 OER 1.592 at 10 mA cm −2 . The Zn‐air battery this material achieves peak power density 293 mW , specific capacity 748 mAh g Zn −1 remarkable stability. Experimental findings theoretical simulations reveal that induced strong electronic among centers, facilitating charge redistribution optimizing barriers enhances rapid release * OH during efficient transformation from O OOH OER. study presents novel strategy developing robust
Язык: Английский
Процитировано
16
Advanced Functional Materials, Год журнала: 2024, Номер unknown
Опубликована: Июль 28, 2024
Abstract The rational design of heteronuclear dual‐atom catalyst (DAC) is intricate due to the random dispersion metal atoms under thermal treatment. Herein, a novel precursor pre‐orientation strategy reported construct Fe‐Co diatomic sites atomically dispersed on nitrogen doped carbon (Fe‐Co‐NC) via cubic Prussian blue analogue as source. Due specific synergy between Fe and Co centers, obtained Fe‐Co‐NC renders outstanding oxygen reduction reaction (ORR) performance with positive half‐wave potential good durability in wide pH range. Density functional theory further clarifies active centers reveals that dual atomic follows modulation mechanism, where intermediates tended adsorb site, while neighboring atom can assist by lowering d ‐band center site. Experimentally theoretically emphasizes priority catalysts over homonuclear Fe‐Fe‐NC Co‐Co‐NC DAC. Moreover, Zn‐Air battery (ZAB) microbial fuel cell (MFC) assembled cathodes both exhibit splendid power density (382 mW cm −2 for ZAB, 2034 ± 103 m MFC) well excellent stability. This work provides new perspective construction precise regulation catalysts.
Язык: Английский
Процитировано
15
Coordination Chemistry Reviews, Год журнала: 2024, Номер 516, С. 215961 - 215961
Опубликована: Май 29, 2024
Язык: Английский
Процитировано
14
Nano-Micro Letters, Год журнала: 2024, Номер 17(1)
Опубликована: Дек. 16, 2024
Abstract The ability to unlock the interplay between activity and stability of oxygen reduction reaction (ORR) represents an important endeavor toward creating robust ORR catalysts for efficient fuel cells. Herein, we report effective strategy concurrent enhance via constructing atomically dispersed Fe–Mn dual-metal sites on N-doped carbon (denoted (FeMn-DA)–N–C) both anion-exchange membrane cells (AEMFC) proton exchange (PEMFC). (FeMn-DA)–N–C possess ample atoms consisting adjacent Fe-N 4 Mn-N surface, yielded a facile doping-adsorption-pyrolysis route. introduction Mn carries several advantageous attributes: increasing number active sites, effectively anchoring Fe due electron transfer (revealed by X-ray absorption spectroscopy density-functional theory (DFT), thus preventing aggregation Fe), circumventing occurrence Fenton reaction, reducing consumption Fe. showcase half-wave potentials 0.92 0.82 V in 0.1 M KOH HClO , respectively, as well outstanding stability. As manifested DFT calculations, affects electronic structure Fe, down-shifts d -band center, accelerates desorption OH groups, creates higher limiting potentials. AEMFC PEMFC with cathode catalyst display high power densities 1060 746 mW cm −2 underscoring their promising potential practical applications. Our study highlights robustness designing Fe-containing dual-atom promote energy conversion storage materials devices.
Язык: Английский
Процитировано
10
Catalysts, Год журнала: 2023, Номер 13(10), С. 1346 - 1346
Опубликована: Окт. 5, 2023
The proton exchange membrane water electrolyzer (PEM-WE) is a well-known green technology for hydrogen production. main obstacle to its development, on large scale, the sluggish kinetics of oxygen evolution reaction (OER). At present, design acid-stable electrocatalysts with low overpotential and excellent stability OER constitutes an important activity in electrocatalysis. This review presents analysis fundamentals strategies advanced evolution, mechanisms, descriptors. scrutiny electrocatalysts, elemental composition from single- multielemental, are presented. In addition, purpose high-entropy alloys (HEAs), recent research strategy, materials summarized. Briefly, effect support materials, which beneficial modulating electronic properties catalysts, Finally, prospects development acidic given.
Язык: Английский
Процитировано
21