Co-phthalocyanin/CNTs nanocomposites: Synthesis, characterizations, and application as an efficient supercapacitor

In this work, Co-phthalocyanin/CNTs nanocomposite has been produced, evaluated, and used as an effective supercapacitor. Transmission electron microscopy (TEM) and X-ray diffraction (XRD) investigations validate the structure of the new nanocomposite ([email protected]). In 6.0 M KOH electrolyte, the electrochemical activities of [email protected] composite are measured by cyclic voltammetry (CV) and galvanostatic charge/discharge (GSCD). The [email protected] composite has a high specific capacitance of 1112 F g−1 at 1.0 A g−1, as well as a high energy density of 55.6 Wh kg−1. According to the Brunauer-Emmett-Teller (BET) procedure, adding CNTs to Co-phthalocyanin considerably increases the surface area and pore volume of the supercapacitor material. Additionally, the [email protected] composite exhibits high cyclability and capacitance retention of 95%. Generally, the PcCo[email protected] composite shows significant promise for improving the energy density of supercapacitors.