Designing electrocatalysts with high activity and durability for multistep reduction and oxidation reactions is challenging. High-entropy alloys (HEAs) are intriguing due to their tunable geometric and electronic structure through entropy effects. However, understanding the origin of their exceptional performance and identifying active centers is hindered by the diverse microenvironment in HEAs. Herein, NiFeCoCuRu HEAs designed with an average diameter of 2.17 nm, featuring different adsorption capacities for various reactants and intermediates in Li-mediated CO2 redox reactions, are introduced. The electronegativity-dependent nature of NiFeCoCuRu HEAs induces significant charge redistribution, shifting the d-band center closer to Fermi level and forming highly active clusters of Ru, Co, and Ni for Li-based compounds adsorptions. This lowers energy barriers and simultaneously stabilizes LiCO2 and LiCO3+CO intermediates, enhancing the efficiency of both CO2 reduction and Li2CO3 decompo
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The discovery of High-Entropy Alloys (HEAs) has been a significant development in the field of Materials Science. In 2004, Cantor introduced the concept of single solid solution alloys containing several elements in equal or near equal proportions. The concept was also introduced by Yeh and co-workers, who coined the term ‘HEA’. This challenged conventional thinking about how alloys could be designed and opened up new possibilities for creating materials with unique properties. In 2014, Yiping Lu and his team proposed the concept of dual-phase eutectic HEAs, which has enabled the development of improved HEAs with both high strength and high ductility. This approach involves creating a microstructure with two different phases that work together to enhance the overall performance of the alloy. Both of these concepts have sparked a significant amount of research interest and have led to major advancements in the field of HEAs. However, despite the promising properties of HEAs, there a