Spin-Matched Hydrogenation via High-Spin Co2+ Sites for Robust pH-Universal Ammonia Electrosynthesis
This study demonstrates that inverse-spinel CoFe2O4 with high-spin octahedral Co2+ sites enables robust, pH-universal ammonia electrosynthesis from nitrate by utilizing spin-matched interactions to overcome the kinetic bottleneck of *NH hydrogenation, achieving exceptional Faradaic efficiency and yield rates, particularly in neutral electrolytes.