Abstract. Mesoporous binary nickel–cobalt (Ni–Co) oxy-hydroxides have been obtained through the microwaveassisted hydrothermal annealing (MAHA) method. The porosity control of the nanostructured Ni–Co oxy-hydroxide nanoparticles is achieved through adding the pluronic triblock copolymer F127 as the surfactant. The structural and electrochemical properties of porous Ni–Co oxy-hydroxi…