Heteroatom‑coordinated Fe–N4 catalysts for enhanced oxygen reduction in alkaline seawater zinc‑air batteries
As maritime electrification and blue-energy harvesting accelerate, conventional Pt/C cathodes collapse in natural seawater because chloride ions poison active sites and shift the oxygen-reduction pathway from the desired 4 e⁻ route to the parasitic 2 e⁻ peroxide route. Now, researchers from Central South University and Xi’an Jiaotong-Liverpool University, led by Professor Jun Wu and Professor Danlei Li, have unveiled a universal oxidative-polymerization route that axially clamps Fe–N₄ single-atom sites with heteroatoms ...