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首页> 外文期刊>RSC Advances >A highly conductive porous graphene electrode prepared via in situ reduction of graphene oxide using Cu nanoparticles for the fabrication of high performance supercapacitors
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A highly conductive porous graphene electrode prepared via in situ reduction of graphene oxide using Cu nanoparticles for the fabrication of high performance supercapacitors

机译：高导电性多孔石墨烯电极，通过使用铜纳米粒子原位还原氧化石墨烯制备，用于制造高性能超级电容器

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摘要

Herein, a new graphene/Cu nanoparticle composite was prepared via the in situ reduction of GO in the presence of Cu nanoparticles which was then utilized as a sacrificing template for the formation of flexible and porous graphene capacitor electrodes by the dissolution of the intercalated Cu nanoparticle in a mixed solution of FeCl3 and HCl. The porous RGO electrode was characterized by atomic force microscopy (AFM), Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS) and thermogravimetric analysis (TGA). The as-prepared graphene/Cu nanoparticle composite and the pure graphene film after removal of Cu nanoparticles possessed high conductivity of 3.1 x 10(3) S m(-1) and 436 S m(-1) respectively. The porous RGO can be used as the electrode for the fabrication of supercapacitors with high gravimetric specific capacitances up to 146 F g(-1), good rate capability and satisfactory electrochemical stability. This environmentally friendly and efficient approach to fabricating porous graphene nanostructures could have enormous potential applications in the field of energy storage and nanotechnology.
机译：在此，通过在Cu纳米颗粒存在下原位还原GO制备了新的石墨烯/ Cu纳米颗粒复合材料，然后将其用作牺牲模板，通过溶解插层式Cu纳米颗粒形成柔性多孔石墨烯电容器电极在FeCl3和HCl的混合溶液中。通过原子力显微镜（AFM），傅立叶变换红外（FTIR）光谱，X射线衍射（XRD），拉曼光谱，X射线光电子能谱（XPS）和热重分析（TGA）对RGO多孔电极进行了表征。制备的石墨烯/铜纳米颗粒复合材料和去除铜纳米颗粒后的纯石墨烯薄膜分别具有3.1 x 10（3）S m（-1）和436 S m（-1）的高电导率。多孔RGO可用作制造超级电容器的电极，该电容器具有高达146 F g（-1）的高重量比电容，良好的倍率能力和令人满意的电化学稳定性。这种制造多孔石墨烯纳米结构的环保，高效的方法在能量存储和纳米技术领域可能具有巨大的潜在应用。

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