Article

High-Entropy Alloys as a Platform for Catalysis: Progress, Challenges, and Opportunities

Xin YueState Key Laboratory for Powder Metallurgy, School of Materials Science and Engineering, Central South University, Changsha, Hunan 410083, P. R. ChinaShuhui LiState Key Laboratory for Powder Metallurgy, School of Materials Science and Engineering, Central South University, Changsha, Hunan 410083, P. R. ChinaYayang QianState Key Laboratory for Powder Metallurgy, School of Materials Science and Engineering, Central South University, Changsha, Hunan 410083, P. R. ChinaWenkun ZhuState Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology, Mianyang, Sichuan 621010, P. R. ChinaHaibo YuanState Key Laboratory for Powder Metallurgy, School of Materials Science and Engineering, Central South University, Changsha, Hunan 410083, P. R. ChinaPengyan JiangState Key Laboratory for Powder Metallurgy, School of Materials Science and Engineering, Central South University, Changsha, Hunan 410083, P. R. ChinaRuihan GuoState Key Laboratory for Powder Metallurgy, School of Materials Science and Engineering, Central South University, Changsha, Hunan 410083, P. R. ChinaLiangbing WangState Key Laboratory for Powder Metallurgy, School of Materials Science and Engineering and Key Laboratory of Electronic Packing and Advanced Functional Materials of Hunan Province, Central South University, Changsha, Hunan 410083, P. R. China

2020en

ABI

Abstract

High-entropy alloys (HEAs), which are defined as near-equimolar alloys of five or more elements, are attracting ever increasing attention because of the unique properties in a variety of applications. Recently, HEAs have already exhibited remarkable catalytic performance toward several thermal-driven and electrocatalytic reactions. HEAs not only regulate the electronic and geometric structures to a large degree but also serve as a platform to construct catalysts with unexpected performance. Herein, recent advances regarding HEA-based catalysis are systematically summarized, with a special focus on the synthetic methods for HEA-based catalysts, catalytic performance, and mechanistic understanding. Moreover, the challenges and future opportunities for this research area are carefully discussed. A series of open questions and promising directions to be explored are proposed, including synthetic methods, regulation of electronic properties, identification of active centers, and applications into photocatalysis. This Review provides an overview about the progress, challenges, and opportunities for HEA-based catalysis.

Identifiers

DOI: 10.1021/acscatal.0c03617

Citations and references

Cited by 20 references

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