Abstract In this work, a novel PANI-Co3O4 supercapacitor electrode used foamed nickel as substrate was synthesized by hydrothermal and in situ polymerized method. The PANI-Co3O4 was visualized by XRD, SEM, TEM and XPS, and its morphology showed that the Co3O4 nanorods were coated in PANI more uniformly. Electrochemical studies revealed that the specific capacitance of PANI-Co3O4 composite at 1 A g-1 is 3105.46 F g-1 (31.05 F cm-2), which is 14.7 times higher than that of Co3O4 alone. Additionally, the electric capacity maintained 74.81% of the original value after 3000 cycles, indicating satisfactory cycle stability. Moreover, the PANI-Co3O4//AC showed a high energy density of 58.84 Wh kg-1 at 0.16 kW kg-1. This study not only points out the new way of PANI/semiconductor metal oxide composite, but also has a great potential for application in high-performance energy storage devices.

中文翻译：

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PANI-Co3O4 具有优异的比电容作为超级电容器的电极

摘要 本工作采用水热法和原位聚合法合成了一种以泡沫镍为基材的新型PANI-Co3O4超级电容器电极。通过 XRD、SEM、TEM 和 XPS 观察 PANI-Co3O4，其形貌表明 Co3O4 纳米棒更均匀地包覆在 PANI 中。电化学研究表明，PANI-Co3O4 复合材料在 1 A g-1 下的比电容为 3105.46 F g-1 (31.05 F cm-2)，比单独使用 Co3O4 时的比电容高 14.7 倍。此外，3000次循环后电容量仍保持原值的74.81%，循环稳定性良好。此外，PANI-Co3O4//AC 在 0.16 kW kg-1 下显示出 58.84 Wh kg-1 的高能量密度。本研究不仅指出了PANI/半导体金属氧化物复合的新途径，