Unveiling a proton-coupled electron-transfer mechanistic library of nitrate to ammonia via ultramicroelectrode-hyphenated mass spectrometry

Proceedings of the National Academy of Sciences, Volume 123, Number 2, January 2026.
ImportanceThe electrocatalytic nitrate reduction reaction (NO3RR) offers a sustainable route for ammonia synthesis and nitrogen recycling, but its complex network of proton-coupled electron transfer steps has hindered full mechanization…