【作者】 金钟； 刘杰；

【Author】 Zhong Jin;Jie Liu;Department of Chemistry and Chemical Engineering, Nanjing University;Department of Chemistry, Duke University;

【机构】 南京大学化学化工学院； 美国杜克大学；

【摘要】 碳微纳米材料如碳纳米管、石墨烯等由于其独特结构而具有优异的电学和化学性质,在复合材料、纳电子器件、储能应用等方面具有广阔应用前景。目前如何大规模可控制备微纳米碳材料并对其结构和性能实现精确调控仍然面临着巨大的挑战。超级电容器作为新型电化学储能器件,具有功率密度高、充放电快、循环寿命长等优点,但其能量密度较低。与传统多孔碳材料相比,石墨烯和碳纳米管具有优异的导电性、较大比表面积和极佳柔韧性,是优秀的电极材料,并且能与MnO2等过渡金属氧化物(MOx)活性材料复合以获得赝电容容积并防止自团聚,可大幅提高超级电容器的性能。本研究团队多年来一直在碳微纳米材料的可控制备和性能调控领域开展研究,取得了一定的科研成果[1-5]。近年来本研究团队在碳微纳米材料超级电容方面也取得了一系列进展[6-11],采用经过适当修饰的碳纳米管和石墨烯纳米片与MnO2等组装成具有高比表面和孔隙率、良好电荷传输特性的复合电极,构筑高能量密度的柔性超级电容器。更多还原

【Abstract】 Carbon nanomaterials, such as carbon nanotubes and graphene, have extraordinary structures and propertiesthat can be applied for novel composites, nanoelectronics and energy-storage. However, the controlled synthesis and property modulation of carbon nanomaterials are still great challenges. Supercapacitor has attracted strong attention due to its extensive potential applications for energy systems and vehicles. Compared to traditional porous carbon, carbon nanotubes and graphene have excellent conductivity, large surface area and superior flexibility for novel electrodes. Moreover, nanostructures with high electrochemical activity can be prepared by the composites of carbon nanomaterials and metal oxide(MOx), such as MnO2. Here, we report our works on the controlled preparation and properties modulation of carbon nanomaterials. Moreover, we also have made a series of progress on supercapacitors by constructing composite electrodes of carbon nanomaterial and MnO2 for the development of wearable, flexible supercapacitors with higher energy density, large specific capacitance and long cycling life.更多还原