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Article
Chemistry, Multidisciplinary
Elisabeth Hengge et al.
Summary: The synthesis of bulk nanoporous copper from a copper-manganese alloy by electrochemical dealloying and free corrosion, as well as the electrochemical behavior and oxide formation of the dealloyed structures, have been investigated. The nanoporous copper exhibited suppressed reordering processes and the formation of a hybrid composite of copper and manganese oxide on its surface. This unique heterogeneous structure shows potential for applications in energy storage and catalysis.
NANOSCALE ADVANCES
(2023)
Article
Chemistry, Multidisciplinary
Aimi A. H. Tajuddin et al.
Summary: To achieve a sustainable hydrogen economy, corrosion-resistant non-noble-metal catalysts are necessary. This study investigates the self-selection/reconstruction characteristics of multi-element alloys and their performance in the oxygen evolution reaction, demonstrating high corrosion resistance and catalytic activity.
ADVANCED MATERIALS
(2023)
Article
Multidisciplinary Sciences
Wei Chen et al.
Summary: Based on high-throughput density-functional theory calculations, a chemical map of single-phase equimolar high-entropy alloys is constructed, and 30,201 potential alloys are identified. The formation of these alloys is mainly driven by the complex interplay among mixing enthalpy, intermetallics formation, and melting point. Two new high-entropy alloys, AlCoMnNiV and CoFeMnNiZn, are successfully synthesized based on the predictions.
NATURE COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Takeshi Fujita
Summary: "High-entropy alloy (HEA) catalysts have gained significant research interest for their versatile performances. However, the research on these catalysts is still in its early stages, with challenges in fabrication, element selection, and application. This review summarizes the current literature on HEA catalysts, focusing on synthesis routes, morphological tunability, attractive applications, and material discoveries using machine learning and high-throughput experiments. Finally, it presents perspectives and concepts for designing desired multifunctional HEA catalysts."
MATERIALS TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Zeyu Jin et al.
Summary: In this study, a series of high-entropy catalysts were synthesized by a chemical dealloying method, which found that increasing entropy effect and non-noble metal contents aid in the formation of complete oxides with low crystallinity. An optimal eight-component high-entropy oxide was identified, demonstrating enhanced catalytic activity and stability, making it suitable for a wide range of applications.
Article
Electrochemistry
Adewale K. Ipadeola et al.
Summary: Porous high-entropy alloys (HEAs) have shown promise as electrocatalysts for water-splitting reactions. This review discusses the preparation methods of porous HEAs and the effects of their key features on the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), as well as provides insights into current limitations and future prospects for the development of ideal HEAs for OER and HER.
ELECTROCHEMISTRY COMMUNICATIONS
(2022)
Review
Multidisciplinary Sciences
Yonggang Yao et al.
Summary: High-entropy nanoparticles have unique structures and multielemental compositions that offer potential for tunable activity and enhanced stability, but they face challenges from complex atomic structures. The review focuses on discussing important progress in high-entropy nanoparticles and critical needs for their future development.
Review
Chemistry, Multidisciplinary
Xiaoran Huo et al.
Summary: This paper reviews the structure characteristics and research progress of high-entropy alloys as electrocatalysts, including the hydrogen evolution reaction, oxygen evolution reaction, and oxygen reduction reaction. Additionally, the future development of HEAs in the field of energy conversion is also discussed.
Article
Chemistry, Multidisciplinary
Keisuke Takahashi et al.
Summary: This study proposes the combination of high-throughput calculations and catalyst informatics as an alternative method for designing heterogeneous catalysts. By performing calculations on 1972 catalyst surface planes for the oxidative coupling of methane (OCM) reaction, key elements were unveiled and several catalysts for the OCM reaction were designed. The results suggest that designing catalysts using high-throughput calculations is achievable if appropriate trends and patterns within the generated data are identified.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Andrea Pinna et al.
Summary: Nanoporous metals have promising properties but suffer from low thermal stability. This study investigates the coarsening process of nanoporous gold and finds that the microstructure of the precursor alloy significantly affects its thermal stability.
Article
Chemistry, Multidisciplinary
Zeyu Jin et al.
Summary: Nanostructured high-entropy materials, such as alloys and oxides, are gaining attention for their tunable surface electronic structure and catalytic activity. This study presents a two-step alloying-dealloying strategy to synthesize ultra-small high-entropy alloy nanoclusters loaded on nanoporous high-entropy oxide nanowires. The composition of both the alloy and oxide can be adjusted separately. Experimental results and theoretical calculations demonstrate the enhanced catalytic performance of the composite, exhibiting high activity for oxygen evolution and reduction reactions. The study highlights the importance of preparing complex high-entropy alloy@high-entropy oxide nanocomposites for multifunctional catalysis and energy conversion.
Review
Chemistry, Physical
Lanlan Yu et al.
Summary: High-entropy alloys (HEAs) with their unique multielement composition space and high-entropy mixing structure have been developed as catalysts for complex carbon and nitrogen loop reactions. However, the design, synthesis, and understanding of HEA catalysts are challenging due to the complexity of both high-entropy materials and reactions.
Article
Materials Science, Multidisciplinary
Tingting Yu et al.
Summary: Nanostructured high-entropy alloys with tunable compositions have shown enhanced catalytic activities in electrochemical reactions. The multifunctional catalytic performance of these alloys could lead to significant advancements in water splitting, rechargeable batteries, and other energy applications.
ACS MATERIALS LETTERS
(2022)
Article
Chemistry, Physical
Zeyu Jin et al.
Summary: A generic dealloying procedure was introduced to fabricate nanoporous high-entropy oxides (HEO) as OER catalysts, incorporated with nanoscale Pt or PtPdCuAgAu particles as ORR catalysts. Experimental results and DFT calculations demonstrate that Pt clusters can enhance ORR activity through strong interactions with the HEO substrates, while also boosting the OER performance. This multicomponent HEO/metal composite system shows potential to provide new combinatorial materials design for multiple catalytic functionalities.
CHEMISTRY OF MATERIALS
(2021)
Review
Multidisciplinary Sciences
Yifan Sun et al.
Summary: Entropy plays a crucial role in catalysis, with a focus on understanding the relationship between entropy and reaction pathways. Recent advances in high-entropy materials have sparked interest in exploring entropy-stabilized systems for catalysis, offering opportunities for tailoring structures and properties. Tuning composition and configuration of HEMs introduces untapped opportunities for accessing better catalysts.
Article
Chemistry, Multidisciplinary
Ze-Xing Cai et al.
Summary: This study demonstrates the facile synthesis of nanoporous ultra-high-entropy alloys (np-UHEAs) with hierarchical porosity via dealloying. These alloys, containing up to 14 elements, exhibit high catalytic activities and electrochemical stabilities in the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in acidic media, outperforming commercial Pt/graphene and IrO2 catalysts. These results provide valuable insights for the selection of elements as catalysts for various applications.
Article
Chemistry, Multidisciplinary
Hang Liu et al.
Summary: High-entropy materials, composed of five or more elements in near-equiatomic percentage, exhibit advantageous properties and show broad potential in electrocatalysis. Computational methods can help discover and design optimal catalysts based on high-entropy materials. High-entropy alloys and compounds can be utilized in various electrocatalytic energy conversion reactions, and the prospects and future opportunities in this research field have gained attention.
Proceedings Paper
Materials Science, Multidisciplinary
Piyush Sharma et al.
Summary: High-entropy alloys, with at least five alloying elements of principal type, provide remarkable properties based on a different design concept, leading to a significant amount of interest in these materials.
MATERIALS TODAY-PROCEEDINGS
(2021)
Article
Multidisciplinary Sciences
Shaojie Gao et al.
NATURE COMMUNICATIONS
(2020)
Review
Chemistry, Physical
Yue Xin et al.
Review
Nanoscience & Nanotechnology
Easo P. George et al.
NATURE REVIEWS MATERIALS
(2019)
Review
Materials Science, Multidisciplinary
Zezhou Li et al.
PROGRESS IN MATERIALS SCIENCE
(2019)
Article
Multidisciplinary Sciences
Yonggang Yao et al.
Article
Physics, Multidisciplinary
Takeshi Fujita et al.
Article
Multidisciplinary Sciences
Mathieu Jacomy et al.
Article
Materials Science, Multidisciplinary
Ye Sun et al.
PHILOSOPHICAL MAGAZINE
(2014)
Article
Chemistry, Multidisciplinary
Caixia Xu et al.
Article
Microscopy
M Watanabe et al.
JOURNAL OF MICROSCOPY
(2006)
Article
Nanoscience & Nanotechnology
B Cantor et al.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2004)
Article
Materials Science, Multidisciplinary
JW Yeh et al.
ADVANCED ENGINEERING MATERIALS
(2004)
