Organic Matrix Stabilized Ultra‐Fine Bismuth Oxide Particles for Electrochemical Energy Storage Application

The synthesis of an organic‐inorganic supramolecular hybrid system has been reported, using a wet‐chemical synthesis method, where the Bi 2 O 3 nanoparticles are dispersed within the organic matrix. The XRD analysis showed the formation of crystalline Bi 2 O 3 . The XPS and Raman spectra analysis also confirmed the formation of Bi 2 O 3 . In this work, the organic molecule supported nanosized Bi 2 O 3 has been used as an electrode material for supercapacitor application in presence of the aqueous solution of alkaline electrolyte (1.0 mol dm −3 of KOH) and exhibited a specific capacitance 407 F.g −1 along with the energy density value of 113 W.h.kg −1 at 1 A.g −1 . The supramolecular system exhibited a long‐term stability by retaining 89% of the initial specific capacitance value after 500 cycles at the current density of 5 A.g −1 .