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.