Cheng Hengyang, Meng Jinku, Wu Guan, Chen Su
State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Jiangsu Key Laboratory of Fine Chemicals and Functional Polymer Materials, Nanjing Tech University (former: Nanjing University of Technology), Nanjing, 210009, P. R. China.
Angew Chem Int Ed Engl. 2019 Nov 25;58(48):17465-17473. doi: 10.1002/anie.201911023. Epub 2019 Oct 17.
Advanced methods, allowing the controllable synthesis of ordered structural nanomaterials with favourable charges transfer and storage, are highly important to achieve ideal supercapacitors with high energy density. Herein, we report a microliter droplet-based method to synthesize hierarchical-structured metal-organic framework/graphene/carbon nanotubes hybrids. The confined ultra-small-volume reaction, give well-defined hybrids with a large specific-surface-area (1206 m g ), abundant ionic-channels (narrow pore of 0.86 nm), and nitrogen active-sites (10.63 %), resulting in high pore-size utilization (97.9 %) and redox-activity (32.3 %). We also propose a scalable microfluidic-blow-spinning method to consecutively generate nanofibre-based flexible supercapacitor electrodes with striking flexibility and mechanical strength. The supercapacitors display large volumetric energy density (147.5 mWh cm ), high specific capacitance (472 F cm ) and stably deformable energy-supply.
先进的方法能够可控地合成具有良好电荷转移和存储性能的有序结构纳米材料，这对于实现具有高能量密度的理想超级电容器至关重要。在此，我们报道了一种基于微升液滴的方法来合成具有分级结构的金属有机框架/石墨烯/碳纳米管杂化物。受限的超小体积反应产生了具有大比表面积（1206 m²/g）、丰富离子通道（0.86 nm窄孔）和氮活性位点（10.63%）的明确杂化物，从而实现了高孔径利用率（97.9%）和氧化还原活性（32.3%）。我们还提出了一种可扩展的微流控吹纺方法，以连续生成具有显著柔韧性和机械强度的基于纳米纤维的柔性超级电容器电极。这些超级电容器具有大体积能量密度（147.5 mWh/cm³）、高比电容（472 F/cm³）和稳定的可变形能量供应。
