Abstract

The electrocatalytic properties of multi-metal materials are predominantly influenced by electronic and geometric effects related to surface and sub-surface atoms. A comprehensive understanding of these effects and their complex interplay is paramount for the efficient development of high-performance catalysts. Along with compositionally complex solid solutions (CCSS), often called high-entropy alloys (HEAs), high-entropy intermetallic compounds (HEIMCs) are an emerging class of materials with distinctive properties originating from both high-entropy alloys and intermetallic compounds. The ordered intermetallic structure is beneficial for identifying structure-property correlations of catalytic surfaces. This minireview provides a summary of the current knowledge of high entropy intermetallic compounds and their role in catalysis, with a particular focus on the key tunable parameters essential for achieving high-performance materials.

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