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首页> 外文期刊>Journal of Materials Chemistry, A. Materials for energy and sustainability >Silica-templated ordered mesoporous carbon thin films as electrodes for micro-capacitors
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Silica-templated ordered mesoporous carbon thin films as electrodes for micro-capacitors

机译：二氧化硅模板的有序介孔碳薄膜作为微电容器的电极

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摘要

A binderless continuous thin film of a mesoporous carbon material was directly synthesized on a graphite current collector using an ordered mesoporous silica thin film as a hard-template. The nanostructure of the silica, the composite silica/carbon and the mesoporous carbon thin films was characterized by field emission scanning electron microscopy coupled to energy dispersive X-ray spectroscopy, transmission electron microscopy and Raman spectroscopy. The silica thin film, which was uniformly deposited onto the graphite plate surface, presented mesopores of around 8 nm perpendicularly disposed to the current collector. The carbon thin film, which almost replicates the nanostructure of the silica thin film, showed mesopores of around 2-3 nm. Electrochemical characterization of both the mesoporous carbon and the composite silica/carbon thin films, by cyclic voltammetry and galvanostatic charge-discharge in a 1 M H2SO4 solution, demonstrated that the synthesized thin films showed exceptional properties in terms of specific capacitance, rate performance and electrochemical stability to be used as electrodes for micro-capacitors.
机译：使用有序的介孔二氧化硅薄膜作为硬模板，在石墨集电器上直接合成介孔碳材料的无粘合剂连续薄膜。二氧化硅，复合二氧化硅/碳和中孔碳薄膜的纳米结构通过耦合到能量色散X射线光谱，透射电子显微镜和拉曼光谱的场发射扫描电子显微镜进行表征。均匀地沉积在石墨板表面上的二氧化硅薄膜呈现垂直于集电器的约8 nm的中孔。几乎复制了二氧化硅薄膜的纳米结构的碳薄膜显示出约2-3 nm的中孔。在1 M H2SO4溶液中通过循环伏安法和恒电流充放电对介孔碳和二氧化硅/碳复合薄膜进行电化学表征，表明合成的薄膜在比电容，速率性能和电化学性能方面表现出卓越的性能。用作微型电容器的电极的稳定性。

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