Recent Progress in High Entropy Alloys for Electrocatalysts
Recent Progress in High Entropy Alloys for Electrocatalysts
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电催化剂用高熵合金最新进展
DOI：
10.1007/s41918-022-00144-8
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发表时间：
2022-09
影响因子：
31.3
通讯作者：
Xueliang Sun
中科院分区：
文献类型：
--
作者：
Kun Wang;Jianhao Huang;Haixin Chen;Yi Wang;Wei Yan;Xianxia Yuan;Shuqin Song;Jiujun Zhang;Xueliang Sun
高熵合金可以稳定地将五种或五种以上的组元稳定地结合到一种单相中，近年来受到了极大的关注。组成/结构的复杂性和可调性为它们提供了巨大的设计空间，可以通过构建不同反应中间体的最佳结合能的反应活性中心来调节电子结构、几何构型和催化活性。本文综述了HEAs基析氢、析氧和氧还原反应电催化剂的制备方法、表征技术、电催化应用及其作用机理等方面的研究进展。讨论和分析了从自下而上(高能球磨、低温球磨、熔体旋压和脱合金化)到自上而下(碳热冲击、溅射沉积和溶剂热)的高能气体材料的合成方法和相应的材料表征。通过总结和分析HEAs在水电解槽、金属-空气电池和燃料电池中对不同电催化反应的电催化性能，讨论了其设计的基本原理和相关的机理。总结了HEAs基电催化剂面临的技术挑战和发展前景，并提出了进一步的研究方向。这一综述可以为利用高熵范式开发高性能电催化材料提供有益的理论储备和实验指导。
High entropy alloys (HEAs), which can incorporate five or more constituents into a single phase stably, have received considerable attention in recent years. The composition/structure complexity and adjustability endow them with a huge design space to adjust electronic structure, geometric configuration as well as catalytic activity through constructing reaction active sites with optimal binding energies of different reaction intermediates. This paper reviews the recent progress on the preparation methods, characterization techniques, electrocatalytic applications and functional mechanisms of HEAs-based electrocatalysts for hydrogen evolution, oxygen evolution and oxygen reduction reactions. The synthesis approaches for HEAs from bottom-up (high-energy ball milling, cryo-milling, melt-spinning and dealloying) to top-down strategies (carbothermal shock, sputtering deposition and solvothermal) and the corresponding materials characterizations are discussed and analyzed. By summarizing and analyzing the electrocatalytic performance of HEAs for diverse electrocatalytic reactions in water electrolysis cells, metal-air batteries and fuel cells, the basic principle of their designs and the relevant mechanisms are discussed. The technical challenges and prospects of HEAs-based electrocatalysts are also summarized with the proposed further research directions. This review can provide a beneficial theoretical reserve and experimental guidance for developing high performance electrocatalytic materials via the paradigm of high entropy.Graphical Abstract
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影响因子：
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影响因子：
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DOI：
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发表时间：
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