Abstract The ordered corn-like CuCo2O4 nanoforests were directly deposited on Ni foam by a hydrothermal/annealing method as a binder-free electrode for a symmetric supercapacitor. The ordered one-dimensional nanostructure can enhance an effective electron transport. The abundant sub-structure can be used to contribute to increasing a large number of active sites for Faradaic reactions. The binder-free loading can help to reduce the ohmic polarization during the charge/discharge process. For three-electrode configuration, the specific capacitance achieved 820 F/g at a current density of 2 mA/cm2 and long-term capacity retention of ∼94% after 1500 cycle. The symmetric device gained a high energy density of 17 W h/kg at a power density of 480 W/kg.

中文翻译：

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用于高性能全固态超级电容器的覆盖镍泡沫的有序玉米状CuCo 2 O 4 纳米森林

摘要 通过水热/退火方法将有序的玉米状 CuCo2O4 纳米森林直接沉积在泡沫镍上，作为对称超级电容器的无粘合剂电极。有序的一维纳米结构可以增强有效的电子传输。丰富的子结构可用于增加法拉第反应的大量活性位点。无粘合剂负载有助于减少充电/放电过程中的欧姆极化。对于三电极配置，在 2 mA/cm2 的电流密度下比电容达到 820 F/g，1500 次循环后的长期容量保持率约为 94%。对称装置在 480 W/kg 的功率密度下获得了 17 W h/kg 的高能量密度。