In situ assembly of Ni3S2 nanosheets encapsulated with NiFe(oxy)hydroxides for efficient water oxidation

An ultrathin NiFe(OH) x electrocatalyst on Ni 3 S 2 nanosheets was fabricated via chemical nanoengineering technology. The NiFe(OH) x /Ni 3 S 2 /NF electrode exhibited outstanding electrocatalytic activity and durability for the oxygen evolution reaction.