Amorphous/Crystalline Heterostructured Nickel Phosphide Nanospheres for Electrocatalytic Water and Methanol Oxidation Reactions

Designing electrocatalysts for the water oxidation reaction (WOR) and the methanol oxidation reaction (MOR) using earth-abundant elements is crucial for the development of water electrolyzers and direct methanol fuel cells. We report the synthesis of nickel phosphide nanospheres with different crystallinities (Ni2P-H, Ni2P-L, and Ni-P-a) by reacting Ni-based metal–organic frameworks and P4 solvothermally. All the nickel phosphide nanospheres...