The main search for faster and more efficient energy storage systems continues to inspire researchers to develop new energy storage materials with ultrahigh performance. Herein, for the first time, we synthesised a CuCo₂O₄/PANI nanocomposite (NC) by an in situ polymerization route. The physio-chemical properties of the composite were systematically investigated by different spectral and analytical techniques. The electrochemical studies revealed the pseudocapacitive behaviour of the nanocomposite electrode material with a significant capacity value of 1042 C g⁻¹ (289.4 mA h g⁻¹) at a current density of 1 A cm⁻² by galvanostatic charge–discharge (GCD) studies. The CuCo₂O₄/PANI NC exhibited high cycle stability with a capacity retention of 97% and an enhanced coulombic efficiency of 98.5% over 5000 GCD cycles and was noted to be superior to state-of-the-art supercapacitors. In addition, the fabricated symmetric device with CuCo₂O₄/PANI showed a high energy density of 25.5 W h cm⁻² at a power density of 353.7 W cm⁻². Moreover, the excellent electrochemical performance of the electrode was attributed to the more abundant electroactive sites and the synergistic effect between CuCo₂O₄ and PANI during the electrochemical reactions. Thus, the electrochemical properties of the fabricated symmetric supercapacitor device with the CuCo₂O₄/PANI NC electrode suggested its great potential for commercial applications.

中文翻译：

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CuCo2O4 / PANI纳米复合材料的制备作为高性能超级电容器的先进电极

对更快，更高效的储能系统的主要探索继续激发研究人员开发具有超高性能的新型储能材料。在此，我们首次通过原位聚合路线合成了CuCo ₂ O ₄ / PANI纳米复合材料（NC）。通过不同的光谱和分析技术系统地研究了复合材料的理化性质。电化学研究表明，通过恒电流充放电（GCD）研究，在电流密度为1 A cm ^-2时，纳米复合电极材料的假电容行为具有1042 C g ^-1（289.4 mA hg ^-1）的显着容量值。铜钴₂O ₄ / PANI NC在5000 GCD循环中表现出高循环稳定性，容量保持率达97％，库仑效率提高了98.5％，被认为优于最新的超级电容器。另外，所制造的对称装置具有CUCO ₂ ö ₄ / PANI显示出25.5 W时cm的高能量密度^-2在353.7W¯¯厘米的功率密度^-2。此外，电极的优异电化学性能归因于更丰富的电活性位以及CuCo ₂ O ₄之间的协同作用。和PANI在电化学反应过程中。因此，具有CuCo ₂ O ₄ / PANI NC电极的对称超级电容器装置的电化学性能表明其在商业应用中具有巨大的潜力。