Mesoporous Nanosheet Networked Hybrids of Cobalt Oxide and Cobalt Phosphate for Efficient Electrochemical and Photoelectrochemical Oxygen Evolution.

A novel mesoporous nanosheet networked hybrid comprising Co O and Co (PO ) is successfully synthesized using a facile and scalable method through calcinating the carbon, cobalt hydroxy carbonate, and cobalt phosphate composite precursor. Electron transfer from Co O to Co (PO ) , together with the special networked structure and the porous nature of the nanosheets enable the Co (PO ) -Co O hybrid to have a high oxygen evolution reaction (OER) activity and outstanding stability in alkaline electrolyte, e.g.