International Journal of Hydrogen Energy, Год журнала: 2024, Номер 82, С. 1081 - 1100
Опубликована: Авг. 9, 2024
Язык: Английский
Applied Catalysis B Environment and Energy, Год журнала: 2023, Номер 341, С. 123289 - 123289
Опубликована: Сен. 14, 2023
Язык: Английский
Процитировано
98
Energy & Environmental Science, Год журнала: 2023, Номер 17(2), С. 704 - 716
Опубликована: Дек. 7, 2023
The electronic synergy of Fe nanoclusters and Ni/Fe–N 4 single-atomic sites optimizes the adsorption/desorption oxygenated intermediates reduces energy barrier oxygen electrocatalysis, boosting Zn–air batteries performance.
Язык: Английский
Процитировано
78
Angewandte Chemie International Edition, Год журнала: 2023, Номер 63(3)
Опубликована: Ноя. 24, 2023
Abstract Modulating the surface and spatial structure of host is associated with reactivity active site, also enhances mass transfer effect CO 2 electroreduction process (CO RR). Herein, we describe development two‐step ligand etch–pyrolysis to access an asymmetric dual‐atomic‐site catalyst (DASC) composed a yolk–shell carbon framework (Zn 1 Mn ‐SNC) derived from S,N‐coordinated Zn−Mn dimers anchored on metal–organic (MOF). In Zn ‐SNC, electronic effects S/N−Zn−Mn−S/N configuration are tailored by strong interactions between dual sites co‐coordination S/N atoms, rendering structural stability atomic distribution. H‐cell, ‐SNC DASC shows low onset overpotential 50 mV high Faraday efficiency 97 % applied 343 mV, thus outperforming counterparts, in flow cell, it reaches current density 500 mA cm −2 at −0.85 V, benefitting accessibility sites. DFT simulations showed that diatomic site optimal adsorption strength COOH* lowers reaction energy barrier, boosting intrinsic RR activity DASC. The structure‐property correlation found this study suggests new ideas for highly accessible catalysts.
Язык: Английский
Процитировано
63
Advanced Functional Materials, Год журнала: 2023, Номер 34(7)
Опубликована: Окт. 30, 2023
Abstract Owing to the Pt‐like electrocatalytic capability and moderate price, Ru‐based catalysts are considered as Pt alternatives for electrochemical water splitting. However, they demonstrate limited catalytic performance under industrial‐level current densities. Herein, a novel electrocatalyst with an extremely low amount (0.85 wt.%) of Ru nanoclusters anchored on Cr‐doped Fe‐metal–organic frameworks (Ru@Cr─FeMOF) through robust Cr─O─Ru bond is presented. The study unveils that such architecture facilitates fast electron transfer manipulates highest occupied d orbital d‐band centers sites, favoring both oxygen evolution reaction (OER) hydrogen (HER) catalysis. as‐prepared catalyst performs excellent activity 21 mV@10 mA cm −2 HER 230 mV@50 OER in alkaline solution, realizes water‐splitting at densities (1.72 V@1000 ), surpassing state‐of‐the‐art literatures.
Язык: Английский
Процитировано
58
Energy & Environmental Science, Год журнала: 2024, Номер 17(6), С. 2298 - 2308
Опубликована: Янв. 1, 2024
In this work, we design an asymmetric hetero-trimetallic single-atom catalyst with ZnN 3 CoN FeN 2 S active catalytic sites to enhance the oxygen reaction performances.
Язык: Английский
Процитировано
53
Small, Год журнала: 2024, Номер 20(30)
Опубликована: Фев. 29, 2024
Abstract The exploiting electrocatalysts for water/seawater electrolysis with remarkable activity and outstanding durability at industrial grade current density remains a huge challenge. Herein, CoMoN x Fe‐doped nanosheet arrays are in‐situ grown on Ni foam, which possess plentiful holes, multilevel heterostructure, lavish Co 5.47 N/MoN@NF Fe‐Co interfaces. They require low overpotentials of 213 296 mV hydrogen evolution reaction (HER) oxygen (OER) under alkaline media to achieve 800 mA cm −2 , respectively, both Tafel slopes (51.1 49.1 dec −1 ) undiminished stability over 80 h. Moreover, the coupled electrolyzer requires voltages 1.735 V yield 500 in water. Notably, they also exhibit exceptional electrocatalytic properties seawater (1.833 V@500 ). experimental studies theoretical calculations verify that Fe doping does reduce energy barrier from OH* O* intermediates during OER process after catalyst reconstruction, non‐metallic N site MoN exhibits lowest overpotential. splendid catalytic performance is attributed optimized local electron configuration porous structure. This discovery provides new design method toward low‐cost excellent catalysts splitting produce hydrogen.
Язык: Английский
Процитировано
36
Advanced Materials, Год журнала: 2024, Номер unknown
Опубликована: Фев. 9, 2024
Abstract People have been looking for an energy‐efficient and sustainable method to produce future chemicals decades. Heterogeneous single‐atom catalysts (SACs) with atomic dispersion of robust, well‐characterized active centers are highly desirable. In particular, correlated SACs cooperative interaction between adjacent single atoms allow the switching single‐site pathway dual or multisite pathway, thus promoting bimolecular more complex reactions synthesis fine chemicals. Herein, structural uniqueness SACs, including intermetal distance electronic in homo/heteronuclear metal sites is featured. Recent advances production methods showcasing research status challenges traditional (such as pyrolysis, wet impregnation, confined synthesis) building a comprehensive multimetallic SAC library, summarized. Emerging strategies such process automation continuous‐flow highlighted, minimizing inconsistency laboratory batch allowing high throughput screening upscaling toward next‐stage chemical by SACs.
Язык: Английский
Процитировано
33
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
Applied Catalysis B Environment and Energy, Год журнала: 2024, Номер 350, С. 123947 - 123947
Опубликована: Апрель 24, 2024
Язык: Английский
Процитировано
30