Results 61 to 70 of about 2,274 (219)

Electrochemically Induced Structural Evolution to Generate Optimized High‐Entropy‐Alloy Electrocatalysts for Ethanol Oxidation

Angewandte Chemie, EarlyView.
Electrochemical cycling drives spontaneous facet optimization in high‐entropy Pd@PdPtIrRuRh core‐shell nanocrystals, reshaping simple cubes into severely beveled architectures with balanced {100}/{110}/{111} facets. This dynamic restructuring yields active electrocatalysts that favor complete ethanol oxidation via the C1 pathway, suppress strongly ...
Yueh‐Chun Hsiao, Hansaem Jang, Chun‐Wei Chang, Jui‐Tai Lin, Kuan‐Fang Lee, Adrian M. Gardner, Richard J. Potter, Alex R. Neale, Laurence J. Hardwick, Kun‐Han Lin, Tung‐Han Yang, Alexander J. Cowan   +11 more
wiley   +2 more sources

Robustness of superconductivity to external pressure in high-entropy-alloy-type metal telluride AgInSnPbBiTe5

Scientific Reports, 2022
High-entropy-alloy (HEA) superconductors are a new class of disordered superconductors. However, commonality of superconducting characteristics of HEA materials is unclear.
Md. Riad Kasem, Yuki Nakahira, Hitoshi Yamaoka, Ryo Matsumoto, Aichi Yamashita, Hirofumi Ishii, Nozomu Hiraoka, Yoshihiko Takano, Yosuke Goto, Yoshikazu Mizuguchi   +9 more
doaj   +1 more source

Laser Preset of MnOx Layer on High‐Entropy Alloy Surface for Ampere‐Level Ultra‐Stable OER Performance

Advanced Science, EarlyView.
3D printing enables a high entropy alloy‐derived, in situ formed MnOx overlayer that suppresses oxidation–reconstruction and mitigates anodic dissolution, while enhancing electrolyte wetting and bubble release to accelerate interfacial mass transport and OER kinetics.
Benzhi Wang, Ziyang Duan, Jeong Yeon Heo, Thu Ha Le, Byunggon Song, Sunhyeong Kwon, Ji Hoon Lee, Jonghwan Suhr, Hyung Mo Jeong   +8 more
wiley   +1 more source

Numerical Simulation of CoCrFeMnNi High Entropy Alloy Shaped Charge Jet and Its Penetration into a Target Plate

Gaoya wuli xuebao
The continuous advancement of modern armor protection technology has imposed severe challenges on the damage power of shaped charge warheads. Traditional liner materials have become a major constraint in improving penetration depth due to their limited ...
Yuquan MENG, Rong LEI, Shanshan LIU, Xiaobao WU, Weidong SONG   +4 more
doaj   +1 more source

Halide Perovskite: A Rich Source of Thermal Insulator

Advanced Science, EarlyView.
Halide perovskites exhibit ultralow thermal conductivity driven by intrinsic lattice softness and strong anharmonicity, falling below conventional defect‐engineering limits. Weak metavalent bonding, A‐site rattling, and dynamic octahedral tilting drive phonon scattering to the Ioffe–Regel limit, where wave‐like tunneling replaces particle‐like ...
Haolin Ye, Bangzhi Ge, Yuan Yu, Chongjian Zhou   +3 more
wiley   +1 more source

Small-Scale Plastic Deformation of Nanocrystalline High Entropy Alloy

Entropy, 2018
High entropy alloys (HEAs) have attracted widespread interest due to their unique properties at many different length-scales. Here, we report the fabrication of nanocrystalline (NC) Al0.1CoCrFeNi high entropy alloy and subsequent small-scale plastic ...
Sanghita Mridha, Mageshwari Komarasamy, Sanjit Bhowmick, Rajiv S. Mishra, Sundeep Mukherjee   +4 more
doaj   +1 more source

Overcoming the Catalytic Bucket Effect in Pt‐based High‐Entropy Nanocages Through Interface Defect and Strain Engineering

Advanced Science, EarlyView.
PtPdNiCuMnAu HENCs exhibit a remarkable half‐wave potential (E1/2) of 0.925 V vs. RHE. The catalyst displays exceptional electrochemical stability, with only a 4 mV negative shift in E1/2 and a mere 5.6% loss in MA after 10, 000 accelerated durability test cycles.
Qian Liu, Haoran Kang, Yiou Liu, Xiaowei Zhang, Xu Chen, Faming Gao   +5 more
wiley   +1 more source

Probing Electrocatalyst Design for Product Selectivity in CO2 Reduction

Advanced Science, EarlyView.
Selective CO2 electroreduction is controlled by catalyst structure, dynamic surface reconstruction, adsorbate interactions, and reaction microenvironment. This review summarizes Cu‐ and non‐Cu‐based catalysts, single‐atom and molecular systems, degradation pathways, and operando/computational strategies for steering CO2RR toward hydrocarbons ...
Suvodeep Sen, Bapan Biswas, Apinya Ngoipala, Julia Wiktor, Ujjwal Pal, Shalini Singh   +5 more
wiley   +1 more source

Microstructure and Mechanical Properties of High-Entropy Alloy FeCoNiCr(X) Produced by Laser Directed Energy Deposition Process: Effect of Compositional Changes

Metals
High-entropy alloys (HEAs) have shown promise as materials with improved mechanical properties compared to traditional materials. Achieving the desired mechanical properties depends on the alloy composition, both in terms of percentage and elements ...
Ekaterina Kovalenko, Igor Krasanov, Ekaterina Valdaytseva, Stanislav Stankevich, Olga Klimova-Korsmik, Marina Gushchina   +5 more
doaj   +1 more source

Advances in Computational and Experimental Approaches to Chemical Short‐Range Order Formation in Multi‐Principal Element Alloys

Advanced Science, EarlyView.
Chemical short‐range order (CSRO) plays a central role in governing the behavior of multi‐principal element alloys. This perspective critically assesses computational and experimental approaches for quantifying, characterizing, and validating CSRO, emphasizing modeling–experiment cross‐validation pathways that enable more reliable interpretation of ...
Mohsen Asle Zaeem, Peter K. Liaw
wiley   +1 more source