Research Progress of High-Entropy Nanoalloys in Electrocatalysis and Secondary Battery

Due to the increasing energy crisis and environmental pollution, it is urgent to develop new clean energy. However, due to its intermittent and regional characteristics, the efficient utilization of these energy sources through electrocatalytic conversion reactions has emerged as a key research focus. Currently, some commercially utilized alloy electrocatalysts often face challenges such as rapid degradation of catalytic activity, poor selectivity, and environmental unfriendliness. The adoption of a high-entropy strategy can effectively address these issues. As an emerging nanomaterial, high-entropy alloys (HEAs) primarily consist of no fewer than five metallic elements and show obvious advantages, including highly tunable compositions, abundant surface active sites, excellent chemical/electrochemical stability, etc. These properties enable effectively optimization of electronic structures and enhancement of atomic utilization, demonstrating broad application prospects. This paper starts with the synthesis strategies of HEAs, systematically elaborates on several common preparation methods, and introduces the latest advancements in electrocatalysis and secondary batteries. Finally, the current challenges for HEAs are summarized, and their future development is projected.