New Approach for Preparation of Bi2O3-Carbon Nanotube Composites Using Celestine Blue Dispersant with High Mass Loading

Abstract

This paper focused on to prepare Bi₂O₃-multiwalled carbon nanotube (MWCNT) nanocomposites electrodes for supercapacitor applications with high mass loading. Nature inspired dispersing agent Celestine blue (CB), different adsorption mechanism in different materials, dispersed MWCNT and Bi₂O₃ and allowed to prepare homogenous electrode with high mass loading on a porous NiFoam current collector. The areal capacitance of 555 mF cm^-2 was obtained from the composite electrode with 25 mg cm^-2 active mass loading in 1M Na₂SO₄ electrolyte. Bi₂O₃/MWCNT/CB composited electrode testing results showed promising results for supercapacitor applications.