• 文献标题:   Iron Oxide- and Copper Oxide-Decorated Chemically Reduced Graphene Oxide Composite as a Novel Electrode for Hybrid Supercapacitors
  • 文献类型:   Article
  • 作  者:   RAHAMAN M, MUKHERJEE T, KAPARAJU P, BOSE S
  • 作者关键词:  
  • 出版物名称:   ENERGY FUELS
  • ISSN:   0887-0624 EI 1520-5029
  • 通讯作者地址:  
  • 被引频次:   5
  • DOI:   10.1021/acs.energyfuels.1c04234
  • 出版年:   2022

▎ 摘  要

In this study, iron oxide- and copper oxide-decorated reduced graphene oxide has been synthesized via a simple wet chemical oxidation-reduction method. The effectiveness of the aforementioned composite as an electrode for supercapacitors (SCs) has been explored via cyclic voltammetry. Raman spectroscopic measurement shows the appearance of a 2D band at 2670 cm(-1) and fitting of the 2D band with multiple Lorentzian functions highlights the formation of a few layers of graphenes. Reduced graphene oxide (RGO) formation and the presence of iron and copper oxides on the RGO surface were evident from both X-ray diffraction and energy dispersive spectroscopy results. The thermogravimetric analysis of the synthesized nanocomposite demonstrated superior thermal stability compared to graphene oxide (GO) with almost 60% retention of initial weight after 500 degrees C. Both the Brunauer -Emmett-Teller test and scanning electron microscopy images established the formation of pores. Average pore diameters of RGO and nanocomposite were observed to be 1.76 and 1.32 nm, respectively. The as-developed nanocomposite exhibited an admirable specific capacitance (C-sp) of 626 F/g at a current density of 1.0 A/g. The bimetallic composite demonstrated an excellent energy density of 86.94 Wh/kg.