Electrochemical performance of CNTs/RGO/MnO2 composite material for supercapacitor

Nanomaterials and Nanotechnology

Shengming Xu¹  Liquan Lu¹  Junwei An¹  Shaohui Yan¹ 

关键词: Graphene;    CNTs;    MnO2;    supercapacitor;   

DOI  :  10.1177/1847980416663687

来源: InTech

【 摘 要 】

In this article, the novel carbon materials (carbon nanotubes (CNTs) and graphene) with high-specific area and superior mechanical behavior are employed to strengthen the specific capacitance and cyclical stability of manganese dioxide (MnO2) for supercapacitors. The electrode material, synthesized by the CNTs, reduced graphene oxide (RGO), and MnO2 (CNTs-RGO-MnO2 composite), is characterized by scanning electron microscope, transmission electron microscope, and X-ray powder diffraction. The results indicate that the MnO2 particles are compactly distributed on the surface of the RGO and CNTs. The state of MnO2 in the CNTs/RGO/MnO2 composite is δ-MnO2. The electrochemical test results indicate that the specific electric capacities of the CNTs/RGO/MnO2 composite are 404 F/g, 255 F/g, and 82 F/g, respectively, at 1 A/g, 3 A/g, and 10 A/g ampere densities, which illustrate that the addition of the CNTs and RGO greatly hoists the specific capacitance of the MnO2. Moreover, the long-time charge–discharge test r...

【 授权许可】

Unknown