![]() ![]() ![]() Ag/AgCl), and resistance to the adsorption of reaction intermediates and products during three hours of constant-potential methanol oxidation electrolysis in alkaline solution. Moreover, Ni/Ni(OH) 2-NFs reveal less charge transfer resistance (10.4 Ω), stable oxidation current density (625 A/cm 2 g cat at 0.7 V vs. Ag/AgCl, which is more than five times higher than that of bare-Ni(OH) 2. Cyclic voltammetry shows that the methanol oxidation mass activity of Ni/Ni(OH) 2-NFs reaches 545 A/cm 2 g cat at 0.6 V vs. ![]() Electrochemical studies show that the electrocatalytic activity of Ni/Ni(OH) 2 nanoflakes towards methanol oxidation in alkaline solution is significantly enhanced in comparison with that of parent bare-Ni(OH) 2 deposited from surfactant-free solution. Physicochemical characterizations show the formation of amorphous mesoporous 2D nanoflakes with a Ni/Ni(OH) 2 structure and a high specific surface area (165 m 2/g). This work demonstrates the chemical synthesis of two-dimensional nanoflakes of mesoporous nickel/nickel (II) hydroxide (Ni/Ni(OH) 2-NFs) using double templates of surfactant self-assembled thin-film and foam of hydrogen bubbles produced by sodium borohydride reducing agent.
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