The effect of ultrasonic treatment and deposition time on nanoflake-like Co(OH)₂ thin films were prepared using the potentiostatic mode of electrodeposition method on stainless steel substrates by a nitrate reduction reaction. After ultrasonic treatment, we used stainless steel substrates for deposition of the nanoflakes like Co(OH)₂ thin films. The effect of deposition times and electrolytes on different physico-chemical properties of Co(OH)₂ was investigated in detail, such as X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), energy dispersive X-ray spectroscopy (EDS), and electrochemical testing. After ultrasonic treatment Co(OH)₂ thin films had devolvement of the uniform and interconnected formation of nanoflakes nanostructures. Supercapacitor performance of the Co(OH)₂ electrodes suggest that, specific capacitance are depends on the surface morphology, and Co(OH)₂ electrodes after ultrasonic treatment exhibited higher performance than without ultrasonication. The maximum specific capacitance of the 30 min. deposited Co(OH)₂ nanoflakes exceeded 276 Fg⁻¹ in 0.5M KOH electrolyte at 5 mVs⁻¹ scan rate.

超声处理和沉积时间对纳米片状Co（OH）₂薄膜的影响是通过电沉积方法在不锈钢基板上通过硝酸盐还原反应的恒电位模式制备的。经过超声波处理后，我们使用了不锈钢基底来沉积纳米薄片，例如Co（OH）₂薄膜。详细研究了沉积时间和电解质对Co（OH）_2的不同理化性质的影响，例如X射线衍射（XRD），场发射扫描电子显微镜（FE-SEM），能量色散X射线光谱学（EDS）和电化学测试。超声处理后的Co（OH）₂薄膜具有纳米薄片纳米结构的均匀且相互连接的形成的退化。Co（OH）₂电极的超级电容器性能表明，比电容取决于表面形态，并且超声处理后的Co（OH）₂电极表现出比未超声处理更高的性能。30分钟内的最大比电容。在0.5 m KOH电解质中，以5 mVs ^-1的扫描速率沉积的Co（OH）₂纳米薄片超过276 Fg ^-1。