Iron hydroxyphosphate and Sn-incorporated iron hydroxyphosphate: efficient and stable electrocatalysts for oxygen evolution reaction

New, iron-based, nanocrystals of Fe₅(PO₄)₄(OH)₃·2H₂O and Sn-incorporated Fe₅(PO₄)₄(OH)₃·2H₂O were synthesized and their electrocatalytic OERs were enhanced because of the presence of PO₄³⁻ligands and the Sn incorporation.