Abstract Novel spruce leaf-like copper bismuth oxide (CuBi2O4) microstructured films have been deposited on stainless steel (SS) substrate by using a simple and cost-effective electrodeposition chemical route. The morphology of CuBi2O4 was studied using field emission scanning electron microscopy (FESEM) whereas X-ray diffraction (XRD) spectra recorded for phase confirmation. The spruce leaf-like architecture composed of nanoparticles was evidenced for the obtained CuBi2O4 material. The supercapacitor performance for prepared CuBi2O4 electrode calcined at 200, 300, 400, 500 °C temperatures were investigated. The cyclic-voltammetry and charge-discharge studies were carried out at different scan rates and current densities respectively. The highest specific capacitance 484 F/g was noted for CuBi2O4 electrode calcined at 500 °C at 10 mV/ s scan rate via cyclic-voltammetry analysis in 1 M NaOH electrolyte. The specific capacitance of 540.9 F/g was estimated from charge-discharge analysis at 10 mA/cm2 current density. The energy density of 146.8 Wh/Kg and power density 1555.5 W/Kg for optimized CuBi2O4 electrode at 10 mA/cm2 current density. The electrochemical impedance spectroscopy studies were also performed. The nanostructured CuBi2O4 material has exhibited supercapacitive properties for energy storage applications.

中文翻译：

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用于超级电容器应用的电沉积云杉叶状结构氧化铜铋电极

摘要 新型云杉叶状氧化铜铋 (CuBi2O4) 微结构薄膜已通过使用简单且经济高效的电沉积化学途径沉积在不锈钢 (SS) 基材上。使用场发射扫描电子显微镜 (FESEM) 研究 CuBi2O4 的形态，同时记录 X 射线衍射 (XRD) 光谱以确认相。获得的 CuBi2O4 材料证明了由纳米颗粒组成的云杉叶状结构。研究了在 200、300、400、500 °C 温度下煅烧制备的 CuBi2O4 电极的超级电容器性能。循环伏安法和充放电研究分别在不同的扫描速率和电流密度下进行。通过循环伏安法分析在 1 M NaOH 电解质中以 10 mV/s 扫描速率在 500 °C 下煅烧的 CuBi2O4 电极的最高比电容为 484 F/g。540.9 F/g 的比电容是根据 10 mA/cm2 电流密度下的充放电分析估算的。在 10 mA/cm2 电流密度下，优化的 CuBi2O4 电极的能量密度为 146.8 Wh/Kg，功率密度为 1555.5 W/Kg。还进行了电化学阻抗谱研究。纳米结构的 CuBi2O4 材料已表现出用于储能应用的超级电容特性。在 10 mA/cm2 电流密度下，优化的 CuBi2O4 电极为 5 W/Kg。还进行了电化学阻抗谱研究。纳米结构的 CuBi2O4 材料已表现出用于储能应用的超级电容特性。在 10 mA/cm2 电流密度下，优化的 CuBi2O4 电极为 5 W/Kg。还进行了电化学阻抗谱研究。纳米结构的 CuBi2O4 材料已表现出用于储能应用的超级电容特性。