Ambient N2 fixation to NH3 electrocatalyzed by a spinel Fe3O4 nanorod

A spinel Fe₃O₄ nanorod on a Ti mesh is a superior catalyst for electrochemical N₂ fixation to NH₃ in 0.1 M Na₂SO₄, achieving a high FE of 2.6% with a NH₃ yield of 5.6 × 10⁻¹¹ mol s⁻¹ cm⁻² at a potential of −0.4 V vs. a reversible hydrogen electrode.