▎ 摘　　要

NOVELTY - Method for preparing polymerized nickel nanoparticle decorated on graphene composite involves (i) ultrasonicating mixture of graphene oxide and water to obtain a solution, (ii) adding mixture of nickel nitrate and polyvinyl alcohol to the solution and adding hydrazine hydrate to obtain a homogeneous solution, (iii) heating the homogeneous solution at 60-80 degrees C for 1-3 hours to obtain a semi-solid solution, (iv) placing the semi-solid solution in an autoclave and heating in order to obtain a solid mass, (v) dissolving the solid mass in a mixture of a solvent, filtering and drying to obtain a composite. USE - The method is useful for preparing polymerized nickel nanoparticle decorated on graphene composite. ADVANTAGE - The method enhances the activity of oxygen evolution reaction of the composite, develops polyvinyl alcohol anchored nickel nanoparticle-graphene composite by simple one pot hydrothermal method, develops an efficient oxygen evolution reaction catalyst which delivers a current density of 10 mA cm-2 at very small overpotential and develops a cost effective oxygen evolution reaction catalyst with excellent mechanical and tensile strength.