Zinc‐ion hybrid capacitors (ZHC) have been considered as emerging sustainable electrochemical energy storage devices. They integrate the benefits of high‐energy density of aqueous zinc ion battery (ZIB) with high‐power density of supercapacitor (SC). Metal‐organic frameworks (MOFs) have been widely used to design electrode materials for portable devices, especially in some energy storage fields because of their large specific surface area and adjustable pore structures. In this work, we prepare porous Mn3O4/C nanosheets with Mn‐BDC as a precursor. The assembled device delivers a specific capacitance of 155.3 mAh g‐1 at a current of 3 A g‐1 and keeps a retention rate of 97.7% after 10,000 cycles. Moreover, it provides an energy density of 464.5 Wh kg‐l at a power density of 100 W kg‐1.

中文翻译：

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用于具有超高能量密度和长循环寿命的锌离子混合电容器的MOF衍生多孔碳

锌离子混合电容器（ZHC）被认为是新兴的可持续电化学储能装置。它们将水系锌离子电池（ZIB）高能量密度的优点与超级电容器（SC）高功率密度的优点结合在一起。金属有机框架（MOF）因其大的比表面积和可调节的孔结构而被广泛用于设计便携式设备的电极材料，特别是在一些储能领域。在这项工作中，我们以 Mn-BDC 作为前驱体制备了多孔 Mn3O4/C 纳米片。组装好的器件在 3 A g-1 电流下的比电容为 155.3 mAh g-1，并且在 10,000 次循环后保持率为 97.7%。此外，它在100 W kg-1的功率密度下提供了464.5 Wh kg-1的能量密度。