Bimetallic organic frameworks possess distinctive structural and component benefits that make them essential materials for energy storage devices with outstanding capabilities. Here, ultra-thin 2D VNi-MOF nanosheet arrays (NSAs) have been in-situ grown on nickel foam (NF) which served as both the current collector and the Ni source by pretreatment and one-step solvothermal method and used as an efficient electrode material for high performance supercapacitors. Benefiting from its ultra-thin 2D NSAs structure and the synergy of bimetallic ions, the VNi-MOF NSAs/NF exhibits a high specific capacity performance (516.5 C at 1 A ) and outstanding cycling stability (85.6 % capacity retention over 12, 000 cycles at 20 A ). Battery-type VNi-MOF NSAs/NF and capacitive-type AC are integrated to assemble a HSC. The prototype HSC achieves a remarkably high energy density of 43 Wh kg (at 800 W kg), which demonstrates the great potential of VNi-MOF (bimetallic organic framework) as a HSC electrode.

中文翻译：

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用于高性能混合超级电容器的泡沫镍上原位镍掺杂V-MOF超薄纳米片阵列


双金属有机框架具有独特的结构和成分优势，使其成为具有出色性能的储能设备的重要材料。在这里，超薄二维 VNi-MOF 纳米片阵列（NSA）通过预处理和一步溶剂热方法在泡沫镍（NF）上原位生长，泡沫镍既充当集电器又充当镍源，并用作高效的高性能超级电容器电极材料。得益于其超薄 2D NSAs 结构和双金属离子的协同作用，VNi-MOF NSAs/NF 表现出高比容量性能（1 A 时为 516.5 C）和出色的循环稳定性（12, 000 次循环后容量保持率为 85.6%） 20A）。电池型VNi-MOF NSA/NF和电容型AC集成在一起组装成HSC。原型 HSC 实现了 43 Wh kg（800 W kg）的极高能量密度，这证明了 VNi-MOF（双金属有机框架）作为 HSC 电极的巨大潜力。