Chemically interconnected ternary AgNP/polypyrrole/functionalized buckypaper composites as high-energy-density supercapacitor electrodes

• Published in: Chemical physics letters 2020-01, Vol.739, p.136957, Article 136957
• Main Authors: Kim, Hyungjoo, Ramalingam, Manivannan, Balakumar, Vellaichamy, Zhang, Xiangwu, Gao, Wei, Son, Young-A., Bradford, Philip D.
• Format: Article
• Language: English
• Subjects: Chemical interactions; Epoxide functionalized buckypaper; Polypyrrole; Silver nanoparticles; Supercapacitor
• ISSN: 0009-2614; 1873-4448
• DOI: 10.1016/j.cplett.2019.136957

[Display omitted] •Ternary composite was fabricated to develop hybrid supercapacitor electrode.•The supercapacitor electrode consists of epoxide functionalized buckypaper, polypyrrole and silver nanoparticles.•Chemical interactions are introduced among individual components in the electrode.•Both higher electrical conductivity and charge transfer efficiency are ascribed to chemical interactions in the electrode.•The chemically interconnected supercapacitor delivers high energy density. In this study, a chemically interconnected composite, called EBP-PPY-AgNP, was fabricated to develop high-performance hybrid supercapacitor electrodes. The composite consists of epoxide-functionalized buckypaer (EBP), polypyrrole (PPY), and silver nanoparticles (AgNP). The structure was characterized using Raman spectroscopy, X-ray photon spectroscopy (XPS), and scanning electron microscopy (SEM). Also, cyclic voltammetry (CV) and galvanostatic charge–discharge (GCD) analyses were conducted to estimate the electrochemical performance. The results were more excellent than those of the other electrodes not chemically interconnected. Finally, the energy density was calculated, and the value was higher than in previous studies that examined electrodes with similar materials.