Self-cleaning transparent pn junction in CuAlO2/WO3 via high entropy perovskite oxide La(Cu0.2Cr0.2Ni0.2Fe0.2Co0.2)O3 transition layer for enhanced photovoltaic conversion

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 487, P. 150727 - 150727

Published: March 26, 2024

Language: Английский

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Investigating the electrochemical performance of MnSe-supported SrZrO3 perovskite oxide nanocomposite as an electrode material for supercapacitor

Ceramics International, Journal Year: 2024, Volume and Issue: 50(13), P. 22884 - 22896

Published: April 2, 2024

Language: Английский

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Structure-activity relationship study of high entropy oxides catalysts for oxygen evolution reaction

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 481, P. 148428 - 148428

Published: Dec. 29, 2023

Language: Английский

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High Entropy Oxides: Mapping the Landscape from Fundamentals to Future Vistas

ACS Energy Letters, Journal Year: 2024, Volume and Issue: 9(8), P. 3694 - 3718

Published: July 5, 2024

High-entropy materials (HEMs) are typically crystalline, phase-pure and configurationally disordered that contain at least five elements evenly blended into a solid-solution framework. The discovery of high-entropy alloys (HEAs) oxides (HEOs) disrupted traditional notions in science, providing avenues for the exploration new materials, property optimization, pursuit advanced applications. While there has been significant research on HEAs, creative breakthroughs HEOs still being revealed. This focus review aims developing structured framework expressing concept HEM, with special emphasis crystal structure functional properties HEOs. Insights recent synthetic advances, foster prospective outcomes their current applications electrocatalysis, battery, comprehensively discussed. Further, it sheds light existing constraints HEOs, highlights adoption theoretical experimental tools to tackle challenges, while delineates potential directions energy application.

Language: Английский

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Facile synthesis of nanosized spinel high entropy oxide (FeCoNiCrMn)3O4 for efficient oxygen evolution reaction

Journal of Materiomics, Journal Year: 2024, Volume and Issue: 10(4), P. 919 - 927

Published: March 1, 2024

The sluggish reaction kinetics of oxygen evolution (OER) and the high price noble metal catalysts hinder wide application water electrolysis for hydrogen generation. High-entropy oxides (HEOs) with multi-components entropy stabilized structures have attracted great research interests due to their efficient durable performance in electrolytic splitting reactions. However, development HEO electrocatalysts are often hindered by limited surface exposed active sites because temperature is usually required form a structure. Herein, flaky high-entropy oxide spinel structure, (FeCoNiCrMn)3O4, was synthesized using sacrificial layered carbon template situ prepared volatile between ammonium sulfate molten glucose. High-resolution TEM results show as-prepared (FeCoNiCrMn)3O4 flakes composed nanosized particles. exhibit excellent OER activity, an overpotential 239 mV at 10 mA/cm2 Tafel slope 52.4 mV/dec. electrocatalyst has stability. Even current density 100 mA/cm2, activity remains unchanged during stability test 24 h. here shed new light design fabrication highly electrocatalysts.

Language: Английский

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Amorphous-crystalline heterostructures enable energy-level matching of cobalt sulfide/nickel iron layered double hydroxide for efficient oxygen evolution reaction

Journal of Colloid and Interface Science, Journal Year: 2023, Volume and Issue: 656, P. 485 - 494

Published: Nov. 22, 2023

Language: Английский

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Challenges and Strategies for Synthesizing High Performance Micro and Nanoscale High Entropy Oxide Materials

Small, Journal Year: 2024, Volume and Issue: 20(28)

Published: Feb. 13, 2024

Abstract High‐entropy oxide micro/nano materials (HEO MNMs) have shown broad application prospects and become hot in recent years. This review comprehensively provides an overview of the latest developments covers key aspects HEO MNMs, by discussing design principles, computer‐aided structural design, synthesis challenges strategies, as well areas. The analysis process includes role high‐throughput large‐scale HEOs along with effects temperature elevation undercooling on formation MNMs. Additionally, article summarizes high‐precision situ characterization devices field offering robust support for related research. Finally, a brief introduction to main applications MNMs is provided, emphasizing their performances. offers valuable guidance future research outlining critical issues current field.

Language: Английский

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First-principles and experimental insight of high-entropy materials as electrocatalysts for energy-related applications: Hydrogen evolution, oxygen evolution, and oxygen reduction reactions

Materials Science and Engineering R Reports, Journal Year: 2024, Volume and Issue: 160, P. 100813 - 100813

Published: June 28, 2024

Language: Английский

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High-Entropy Electrode Materials: Synthesis, Properties and Outlook

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 17(1)

Published: Sept. 27, 2024

Abstract High-entropy materials represent a new category of high-performance materials, first proposed in 2004 and extensively investigated by researchers over the past two decades. The definition high-entropy has continuously evolved. In last ten years, discovery an increasing number led to significant advancements their utilization energy storage, electrocatalysis, related domains, accompanied rise techniques for fabricating electrode materials. Recently, research emphasis shifted from solely improving performance toward exploring reaction mechanisms adopting cleaner preparation approaches. However, current remains relatively vague, method is based on single metal/low- or medium-entropy It should be noted that not all methods applicable can directly applied this review, development are briefly reviewed. Subsequently, classification presented, followed discussion applications storage catalysis perspective synthesis methods. Finally, evaluation advantages disadvantages various production process different provided, along with proposal potential future directions

Language: Английский

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Electrocatalytic overall water splitting based on (ZnNiCoFeY)xOy high-entropy oxide supported on MoS2

South African Journal of Chemical Engineering, Journal Year: 2024, Volume and Issue: 48, P. 425 - 435

Published: March 20, 2024

Hydrogen energy is a sustainable and clean source that can meet global demands without adverse environmental impacts. High-entropy oxides (HEOs), multielement (5 or more) with an equiatomic near-equatomic elemental composition, offer novel approach to designing bifunctional electrocatalysts. This work explores (ZnNiCoFeY)xOy over MoS2 as electrocatalyst (HEO-MoS2) in alkaline medium. The HEO was synthesized using combustion process loaded ultrasonic method. exhibits excellent performance, including long-term stability for 24 hours, overpotential of 214 mV vs the reversible hydrogen electrode (RHE) evolution reaction (HER), 308 oxygen (OER) at 10 mA cm−2. low both HER OER high current densities. Additionally, HEO-MoS2 demonstrates smaller solution charge transfer resistance values. electrolyzer assembled electrodes overall water splitting. These exhibited cell voltage 1.65 V fabricated facile scalable method appeals industrial applications.

Language: Английский

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