An iron incorporation-induced nickel hydroxide multiphase with a 2D/3D hierarchical sheet-on-sheet structure for electrocatalytic water oxidation.

An Fe-incorporated Ni(OH)2 multiphase with a unique 2D/3D hierarchical sheet-on-sheet structure exhibits superior catalytic activity and durability for water oxidation, which is contributed by synergistic effects, enhanced electron transport and an increased number of exposed active sites.