2D conjugated metal‐organic frameworks (2D c‐MOFs) are emerging as a novel class of conductive redox‐active materials for electrochemical energy storage. However, developing 2D c‐MOFs as flexible thin‐film electrodes have been largely limited, due to the lack of capability of solution‐processing and integration into nanodevices arising from the rigid powder samples by solvothermal synthesis. Here, the synthesis of phthalocyanine‐based 2D c‐MOF (Ni₂[CuPc(NH)₈]) nanosheets through ball milling mechanical exfoliation method are reported. The nanosheets feature with average lateral size of ≈160 nm and mean thickness of ≈7 nm (≈10 layers), and exhibit high crystallinity and chemical stability as well as a p‐type semiconducting behavior with mobility of ≈1.5 cm² V⁻¹ s⁻¹ at room temperature. Benefiting from the ultrathin feature, the nanosheets allow high utilization of active sites and facile solution‐processability. Thus, micro‐supercapacitor (MSC) devices are fabricated mixing Ni₂[CuPc(NH)₈] nanosheets with exfoliated graphene, which display outstanding cycling stability and a high areal capacitance up to 18.9 mF cm⁻²; the performance surpasses most of the reported conducting polymers‐based and 2D materials‐based MSCs.

中文翻译：

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基于酞菁的二维共轭金属有机骨架纳米片，用于高性能微型超级电容器

2D共轭金属有机骨架（2D c- MOF）逐渐成为一类新型的用于电化学能量存储的导电氧化还原活性材料。然而，由于缺乏通过溶剂热合成制备的刚性粉末样品而产生的溶液处理能力和集成到纳米器件中的能力，因此将二维c -MOFs开发为柔性薄膜电极受到了很大的限制。在这里，基于酞菁的2D c - MOF（Ni ₂ [CuPc（NH）₈]）通过球磨机械剥离法的纳米片的报道。纳米片的平均横向尺寸为≈160nm，平均厚度为≈7nm（约10层），并具有高结晶度和化学稳定性以及ap型半导体行为，迁移率≈1.5cm ² V ^-1 s室温下为^-1。得益于超薄功能，纳米片可有效利用活性位点，并具有易于处理的溶液。因此，通过将Ni ₂ [CuPc（NH）₈ ]纳米片与剥落的石墨烯混合制造了微型超级电容器（MSC）器件，这些器件显示出出色的循环稳定性和高达18.9 mF cm ^-2的高面电容。; 该性能超过了大多数已报道的基于导电聚合物和2D材料的MSC。