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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Electrochemical capacitor performance of TiO2 decorated vertical graphene nanosheets electrode
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Electrochemical capacitor performance of TiO2 decorated vertical graphene nanosheets electrode

机译:TiO2的电化学电容性能装饰垂直石墨烯纳米电极

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摘要

Vertical graphene nanosheets (VGNs) are a prominent material for supercapacitor electrode purpose, due to its well defined three dimensional architecture and remarkable properties. Although VGN has all the necessary criteria for supercapacitor electrode, enhancement in its charge storage performance is the subject of research. Herein, we report the improvement in charge storage performance of VGN by conformal like decoration with TiO2. The as-grown VGN exhibited a capacitance value of 0.15 mF cm(-2) (6 F g(-1)) and is found to enhance up to 2.8 mF cm(-2) (103.7 F g(-1)) with TiO2 decoration of the VGN surface. The enhancement in capacitance value is correlated with the increase in electrical conductivity, reduced series resistance and presence of pseudocapacitance of the TiO2 decorated VGN electrode in addition to electric double layer capacitance.
机译:垂直石墨烯纳米片(VGN)是超级电容器电极目的的突出材料,因为其定义了三维架构和显着性质。 尽管VGN具有超级电容器电极的所有必要标准,但其电荷存储性能的增强是研究的主题。 在此,我们通过用TiO2的共形式报告VGN的电荷存储性能的提高。 生长的VGN表现出0.15mF cm(-2)(6f g(-1))的电容值,并发现高达2.8mF cm(-2)(103.7f g(-1)) TiO2 vgn表面的装饰。 除了电双层电容之外,电导率值的增强与电导率的增加,电导率降低,串联电阻减小和TiO 2的假码的存在。

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