High-entropy energy materials: challenges and new opportunities

Energy & Environmental Science, Год журнала: 2021, Номер 14(5), С. 2883 - 2905

Опубликована: Янв. 1, 2021

An overview of high-entropy materials for energy applications, including H₂ catalysis and storage, CO₂ conversion, O₂ electrochemical is given the challenges opportunities within this field are discussed.

Язык: Английский

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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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High‐Entropy Metal Sulfide Nanoparticles Promise High‐Performance Oxygen Evolution Reaction

Advanced Energy Materials, Год журнала: 2020, Номер 11(3)

Опубликована: Ноя. 30, 2020

Abstract Transition metal sulfides with a multi‐elemental nature represent class of promising catalysts for oxygen evolution reaction (OER) owing to their good catalytic activity. However, synthesis remains challenge due the thermodynamic immiscibility constituent multimetallic elements in sulfide structure. Herein, first time high‐entropy (HEMS, i.e., (CrMnFeCoNi)S x ) solid solution nanoparticles is reported. Computational and X‐ray photoelectron spectroscopy analysis suggest that exhibits synergistic effect among atoms leads desired electronic states enhance OER The show one best activities (low overpotential 295 mV at 100 mA cm −2 1 m KOH solution) durability (only slight polarization after 10 h by chronopotentiometry) compared unary, binary, ternary, quaternary counterparts. This work opens up new paradigm compound highly efficient electrocatalysis applications.

Язык: Английский

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Sub-2 nm Ultrasmall High-Entropy Alloy Nanoparticles for Extremely Superior Electrocatalytic Hydrogen Evolution

Journal of the American Chemical Society, Год журнала: 2021, Номер 143(41), С. 17117 - 17127

Опубликована: Сен. 23, 2021

The development of sufficiently effective catalysts with extremely superior performance for electrocatalytic hydrogen production still remains a formidable challenge, especially in acidic media. Here, we report ultrasmall high-entropy alloy (us-HEA) nanoparticles (NPs) the best-level evolution reaction (HER). us-HEA (NiCoFePtRh) NPs show an average diameter 1.68 nm, which is smallest size reported HEAs. atomic structure, coordinational and electronic structure us-HEAs were comprehensively clarified. us-HEA/C achieves ultrahigh mass activity 28.3 A mg-1noble metals at -0.05 V (vs reversible electrode, RHE) HER 0.5 M H2SO4 solution, 40.4 74.5 times higher than those commercial Pt/C Rh/C catalysts, respectively. Moreover, demonstrates turnover frequency 30.1 s-1 50 mV overpotential (41.8 that catalyst) excellent stability no decay after 10 000 cycles. Operando X-ray absorption spectroscopy theoretical calculations reveal actual active sites, tunable structures, synergistic effect among five elements, endow significantly enhanced activity. This work not only engineers general scalable strategy synthesizing elucidates complex structural information catalytic mechanisms multielement HEA system depth, but also highlights HEAs as advanced accelerates research energy-related 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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Machine learning for a sustainable energy future

Nature Reviews Materials, Год журнала: 2022, Номер 8(3), С. 202 - 215

Опубликована: Окт. 18, 2022

Язык: Английский

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On the electronic structure and hydrogen evolution reaction activity of platinum group metal-based high-entropy-alloy nanoparticles

Chemical Science, Год журнала: 2020, Номер 11(47), С. 12731 - 12736

Опубликована: Янв. 1, 2020

RuRhPdIrPt high-entropy-alloy nanoparticles with a broad and featureless valence band spectrum show high hydrogen evolution reaction activity.

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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