Overcoming Energy-Scaling Barriers: Efficient Ammonia Electrosynthesis on High-Entropy Alloy Catalysts.

ABSTRACT: Electrochemically converting nitrate (NO₃ ^-) to value-added ammonia (NH₃) is a complex process involving an eight-electron transfer and numerous intermediates, presenting a significant challenge for optimization. A multi-elemental synergy strategy to regulate the local electronic structure at the atomic level is proposed, creating a broad adsorption energy landscape in high-entropy alloy (HEA) catalysts. This approach enables optimal adsorption and desorption of various intermediates, effectively overcoming energy-scaling limitations for efficient NH₃ electrosynthesis. The HEA catalyst achieved a high Faradaic efficiency of 94.5 ± 4.3% and a yield rate of 10.2 ± 0.5 mg h^-1 mg_cat ^-1. It also demonstrated remarkable

SUBMITTER: Yin D 

PROVIDER: S-EPMC11881671 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature