Supercapacitance Performance of Mesoporous Mono- and Bi-Metallic Cobalt and Nickel Hydroxides Nanoflakes Chemically Deposited from Foam-Surfactant Liquid Crystal Dual Templates

Highlights Mesoporous 2D nanoflakes architectures of mono-, and bi-metallic cobalt and nickel hydroxide were prepared via chemical precipitation from foam-surfactant liquid crystal dual template. The 2D nanoflakes architectures exhibit an amorphous structure with surface area up to 253.50 m²/g. The 2D nanoflakes with Co/Ni ratios of (1:3) revealed total capacitances of 1384 F g⁻¹ at charging current density of 5.0 A g⁻¹ and retained 99.4% of its original value after 300 cycles.