High-entropy nanoparticles: Synthesis-structure-property relationships and data-driven discovery

Science, Год журнала: 2022, Номер 376(6589)

Опубликована: Апрель 7, 2022

High-entropy nanoparticles have become a rapidly growing area of research in recent years. Because their multielemental compositions and unique high-entropy mixing states (i.e., solid-solution) that can lead to tunable activity enhanced stability, these received notable attention for catalyst design exploration. However, this strong potential is also accompanied by grand challenges originating from vast compositional space complex atomic structure, which hinder comprehensive exploration fundamental understanding. Through multidisciplinary view synthesis, characterization, catalytic applications, high-throughput screening, data-driven materials discovery, review dedicated discussing the important progress unveiling critical needs future development catalysis, energy, sustainability applications.

Язык: Английский

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High-entropy materials for catalysis: A new frontier

Science Advances, Год журнала: 2021, Номер 7(20)

Опубликована: Май 12, 2021

Entropy plays a pivotal role in catalysis, and extensive research efforts have been directed to understanding the enthalpy-entropy relationship that defines reaction pathways of molecular species. On other side, surface catalysts, entropic effects rarely investigated because difficulty deciphering increased complexities multicomponent systems. Recent advances high-entropy materials (HEMs) triggered broad interests exploring entropy-stabilized systems for where enhanced configurational entropy affords virtually unlimited scope tailoring structures properties HEMs. In this review, we summarize recent progress discovery design HEMs catalysis. The correlation between compositional structural engineering optimization catalytic behaviors is highlighted alloys, oxides, beyond. Tuning composition configuration introduces untapped opportunities accessing better catalysts resolving issues are considered challenging conventional, simple

Язык: Английский

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Recent progress of high-entropy materials for energy storage and conversion

Journal of Materials Chemistry A, Год журнала: 2020, Номер 9(2), С. 782 - 823

Опубликована: Ноя. 25, 2020

This review covers the recent developments in catalysis, water splitting, fuel cells, batteries, supercapacitors, and hydrogen storage enabled by high entropy materials.

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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What Makes High‐Entropy Alloys Exceptional Electrocatalysts?

Angewandte Chemie International Edition, Год журнала: 2021, Номер 60(52), С. 26894 - 26903

Опубликована: Авг. 26, 2021

Abstract The formation of a vast number different multielement active sites in compositionally complex solid solution materials, often more generally termed high‐entropy alloys, offers new and unique concepts catalyst design, which mitigate existing limitations change the view on structure–activity relations. We discuss these by summarising currently fundamental knowledge critically assess chances this material class, also highlighting design strategies. A roadmap is proposed, illustrating characteristic could be exploited using strategy, breakthroughs might possible to guide future research highly promising class for (electro)catalysis.

Язык: Английский

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Significantly Enhanced Overall Water Splitting Performance by Partial Oxidation of Ir through Au Modification in Core–Shell Alloy Structure

Journal of the American Chemical Society, Год журнала: 2021, Номер 143(12), С. 4639 - 4645

Опубликована: Март 3, 2021

Developing efficient bifunctional electrocatalysts for overall water splitting in acidic conditions is the essential step proton exchange membrane electrolyzers (PEMWEs). We first report synthesis of core–shell structure nanoparticles (NPs) with an Au core and AuIr2 alloy shell (Au@AuIr2). Au@AuIr2 displayed 4.6 (5.6) times higher intrinsic (mass) activity toward oxygen evolution reaction (OER) than a commercial Ir catalyst. Furthermore, it showed hydrogen (HER) catalytic properties comparable to those Pt/C. Significantly, when was used as both anode cathode catalyst, cell achieved 10 mA/cm2 low voltage 1.55 V maintained this more 40 h, which greatly outperformed couples (Ir/C||Pt/C, 1.63 V, decreased within minutes) among most catalysts reported. Theoretical calculations coupled X-ray-based structural analyses suggest that partially oxidized surfaces originating from electronic interaction between provide balance different intermediates binding realize significantly enhanced OER performance.

Язык: Английский

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Hydrogen spillover-driven synthesis of high-entropy alloy nanoparticles as a robust catalyst for CO2 hydrogenation

Nature Communications, Год журнала: 2021, Номер 12(1)

Опубликована: Июнь 23, 2021

Abstract High-entropy alloys (HEAs) have been intensively pursued as potentially advanced materials because of their exceptional properties. However, the facile fabrication nanometer-sized HEAs over conventional catalyst supports remains challenging, and design rational synthetic protocols would permit development innovative catalysts with a wide range potential compositions. Herein, we demonstrate that titanium dioxide (TiO 2 ) is promising platform for low-temperature synthesis supported CoNiCuRuPd HEA nanoparticles (NPs) at 400 °C. This process driven by pronounced hydrogen spillover effect on TiO in conjunction coupled proton/electron transfer. The NPs produced this work were found to be both active extremely durable during CO hydrogenation reaction. Characterization means various situ techniques theoretical calculations elucidated cocktail sluggish diffusion originating from synergistic obtained combination elements.

Язык: Английский

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Catalysis of Alloys: Classification, Principles, and Design for a Variety of Materials and Reactions

Chemical Reviews, Год журнала: 2022, Номер 123(9), С. 5859 - 5947

Опубликована: Сен. 28, 2022

Alloying has long been used as a promising methodology to improve the catalytic performance of metallic materials. In recent years, field alloy catalysis made remarkable progress with emergence variety novel materials and their functions. Therefore, comprehensive disciplinary framework for chemistry alloys that provides cross-sectional understanding broad research is in high demand. this review, we provide classification various based on metallurgy, thermodynamics, inorganic summarize roles alloying its principles brief introduction historical background field. Furthermore, explain how each type can be catalyst material design functional target reaction by introducing representative case studies. This review includes two approaches, namely, from reactions, better alloys. Our offers perspective encyclopedically according readers' individual interests.

Язык: Английский

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High-entropy materials for energy-related applications

iScience, Год журнала: 2021, Номер 24(3), С. 102177 - 102177

Опубликована: Фев. 16, 2021

High-entropy materials (HEMs), including high-entropy alloys (HEAs), oxides (HEOs), and other compounds, have gained significant interests over the past years. These unique structures with coexistence of antisite disordering crystal periodicity, which were originally investigated as structural materials. Recently, they emerged for energy-related applications, such catalysis, energy storage, etc. In this work, we review research progress applications HEMs. After an introduction on background, theory, syntheses HEMs, survey their electrocatalysis, batteries, others, aiming to retrieve correlations between performances. end, discussed challenges future directions developing

Язык: Английский

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High‐Entropy Alloys for Electrocatalysis: Design, Characterization, and Applications

Small, Год журнала: 2021, Номер 18(7)

Опубликована: Ноя. 5, 2021

Abstract High‐entropy alloys (HEAs) are expected to function well as electrocatalytic materials, owing their widely adjustable composition and unique physical chemical properties. Recently, HEA catalysts extensively studied in the field of electrocatalysis; this motivated authors investigate relationship between structure HEAs performance. In review, latest advances electrocatalysts systematically summarized, with special focus on nitrogen fixation, carbon cycle, water splitting, fuel cells; addition, by combining characterization analysis microstructures, rational design strategies for optimizing electrocatalysts, including controllable preparation, component regulation, strain engineering, defect theoretical prediction proposed. Moreover, existing issues future trends predicted, which will help further develop these high‐entropy materials.

Язык: Английский

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