Scholarlink

<p>In this study, CuCo<sub>2</sub>O<sub>4</sub>/CuO and ZnCo<sub>2</sub>O<sub>4</sub>/ZnO nanocomposites were synthesised through a facile microwave-assisted method and evaluated their electrochemical performance as supercapacitor electrode materials. XRD analysis confirmed the formation of highly crystalline mixed-metal oxide phases, while FTIR spectra verified the characteristic metal–oxygen vibrational bands. The morphology of the nanocomposite was analysed using FESEM with EDX, which provided information on its morphology and elemental mapping, while HRTEM analysis revealed its nanoscale structure. The electrochemical tests showed strong pseudocapacitive performance, with CuCo<sub>2</sub>O<sub>4</sub>/CuO delivering a specific capacitance of 336.3 F/g and ZnCo<sub>2</sub>O<sub>4</sub>/ZnO achieving 488 F/g at 1 A/g. The calculated ECSA values were 1477.5 cm<sup>2</sup> for CuCo<sub>2</sub>O<sub>4</sub>/CuO, and 4275 cm<sup>2</sup> for ZnCo<sub>2</sub>O<sub>4</sub>/ZnO, respectively, indicating a higher electrochemically active surface area for ZnCo<sub>2</sub>O<sub>4</sub>/ZnO. Electrochemical impedance analysis further showed a lower resistance value of 1.1 Ω for ZnCo<sub>2</sub>O<sub>4</sub>/ZnO, confirming improved charge transfer kinetics. In addition, the electrodes exhibited excellent cycling stability over 3000 cycles. These findings demonstrate that ZnCo<sub>2</sub>O<sub>4</sub>/ZnO is a promising electrode material for high-performance supercapacitor applications.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Synergistic effects of microwave-assisted synthesised CuCo2O4/CuO and ZnCo2O4/ZnO nanocomposites for supercapacitor applications

  • 期刊论文

  • 发表日期：

    2026年7月25日

查看全文
  • V. T. Jeielayaganga,
  • M. Venkatesh

摘要

In this study, CuCo2O4/CuO and ZnCo2O4/ZnO nanocomposites were synthesised through a facile microwave-assisted method and evaluated their electrochemical performance as supercapacitor electrode materials. XRD analysis confirmed the formation of highly crystalline mixed-metal oxide phases, while FTIR spectra verified the characteristic metal–oxygen vibrational bands. The morphology of the nanocomposite was analysed using FESEM with EDX, which provided information on its morphology and elemental mapping, while HRTEM analysis revealed its nanoscale structure. The electrochemical tests showed strong pseudocapacitive performance, with CuCo2O4/CuO delivering a specific capacitance of 336.3 F/g and ZnCo2O4/ZnO achieving 488 F/g at 1 A/g. The calculated ECSA values were 1477.5 cm2 for CuCo2O4/CuO, and 4275 cm2 for ZnCo2O4/ZnO, respectively, indicating a higher electrochemically active surface area for ZnCo2O4/ZnO. Electrochemical impedance analysis further showed a lower resistance value of 1.1 Ω for ZnCo2O4/ZnO, confirming improved charge transfer kinetics. In addition, the electrodes exhibited excellent cycling stability over 3000 cycles. These findings demonstrate that ZnCo2O4/ZnO is a promising electrode material for high-performance supercapacitor applications.