Journal of Electroanalytical Chemistry, Journal Year: 2024, Volume and Issue: 978, P. 118910 - 118910
Published: Dec. 30, 2024
Language: Английский
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
Citations
9
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
Citations
9
Energy & Environmental Science, Journal Year: 2024, Volume and Issue: unknown
Published: Jan. 1, 2024
An overview of high-entropy strategies for batteries is provided, emphasizing their unique structural/compositional attributes and positive effects on stability performance, alongside a discussion key challenges future research directions.
Language: Английский
Citations
9
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 7, 2025
Abstract High entropy alloys (HEAs) with entropy‐driven stabilization are attractive in potassium‐ion batteries (PIBs); however, they suffer from phase segregation due to the disparity of versatile components. Confining multifarious metals into same lattice using ligands full‐coordination abilities allows for delicate control at nanoscale level and thus decreases atom diffusion. This chemical synthesis can suppress realize HEAs PIB anodes. Herein, a new MnCoNiCuZn‐based HEA nanoparticle encapsulated within nitrogen‐doped carbon (HEA‐NPs@NC) is fabricated The flexible chlorhexidine selected its long chain, large steric bulkiness, abundant neutral tetradentate donors, coordination ability. high effect “cocktail” HEA‐NPs@NC allow tailoring electrochemical functionalities, including multiple K + transport paths, good conductivity, stability. anode achieves lifespan over 3000 cycles, impressive capacity (513 mAh g −1 ), high‐rate performance (202 5 A ). ex situ characterizations density functional theory calculations elucidated acts as an “atomic composite” forms interstitial metallic solid solutions interaction constituent elements.
Language: Английский
Citations
1
ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 10, 2025
Achieving high energy density and long cycle life in alloy-type anodes remains a significant challenge due to the large volume changes during cycling. Here, we introduce high-entropy engineering approach using SnSb-based oxides codoped with Ti Al (SSBTA-600), designed promote formation of efficient oxygen vacancies at calcination temperature 600 °C. This results remarkable performance capacity 1012 mAh g-1 0.5 A 297 5 after 500 cycles, superior retention 99% 83.5%, respectively. LiFePO4||SSBTA full cell achieves 134 100 cycles 89.4% retention, demonstrating its practical potential for lithium-ion batteries. The concentration SSBTA-600, induced by multivalency Al, is validated electron paramagnetic resonance (EPR) X-ray absorption spectroscopy (XAS). significantly improves cyclic stability high-rate provides promising strategy enhancing anodes.
Language: Английский
Citations
1
Journal of Materials Science, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 12, 2025
Language: Английский
Citations
1
Published: Jan. 1, 2025
Language: Английский
Citations
0
Rare Metals, Journal Year: 2025, Volume and Issue: unknown
Published: April 12, 2025
Language: Английский
Citations
0
Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown
Published: May 1, 2025
Electrochemical capacitor diodes, integrating energy storage and ion rectification, hold great promise for practical applications. However, limitations in rectification ratio specific capacitance hinder their widespread use. Here, high-entropy oxides were employed as electrode materials, with conductivity significantly enhanced via defect engineering lattice optimization. Abundant oxygen vacancies increased active sites accelerated surface reaction kinetics. Consequently, the (CrMnFeCoNiLi)3O4 achieved an excellent of 272.04 F g-1 density 182.87 W h kg-1, alongside favorable performance (RRI = 6.5, RRII 0.95). After 1000 cycles, remained stable at 5.5, Constant voltage tests further confirmed its suitability electronic circuits. This study underscores potential defect-engineered advancing high-performance conversion devices.
Language: Английский
Citations
0
Metals, Journal Year: 2024, Volume and Issue: 14(3), P. 289 - 289
Published: Feb. 29, 2024
Nanoporous structures with 3D interconnected networks are traditionally made by dealloying a binary precursor. Certain approaches for fabricating these materials have been applied to refractory multi-principal element alloys (RMPEAs), which can be suitable candidates high-temperature applications. In this study, nanoporous (np-RMPEAs) were fabricated from magnesium-based thin films (VMoNbTaMg) that had prepared magnetron sputtering. Vacuum thermal (VTD), involves sublimation of higher vapor pressure element, is novel technique synthesizing elements prone oxidation. When VMoNbTaMg was heated under vacuum, structure created the highest (Mg). X-ray photoelectron spectroscopy depth profiling indicated significantly less ligament oxidation during VTD as compared traditional methods. Furthermore, np-RMPEAs exhibited outstanding stability against coarsening, retaining smaller ligaments (~25 nm) at elevated temperature (700 °C) prolonged period (48 h).
Language: Английский
Citations
2