WIT Press


Study Of Ternary Metal Oxides As Supercapacitor Electrodes

Price

Free (open access)

Paper DOI

10.2495/ESUS140391

Volume

186

Pages

12

Page Range

457 - 468

Published

2015

Size

1,903 kb

Author(s)

B. Bhujun, S. Anandan, M. T. T. Tan

Abstract

Supercapacitors are energy storage devices that make use of ion adsorption (electrochemical double layer capacitors) or fast surface redox reactions (pseudocapacitors). They complement batteries in electrical energy storage. Recent advances in charge storage mechanisms and the development of advanced nanostructured materials has yielded notable improvement in the performance of supercapacitors. The structural and electrochemical properties of the mixed metallic oxides AlxCuyCozFe2O4 (where x + y + z = 1) nanomaterials, which crystallise in a cubic spinel AFe2O4 structure are investigated systematically with a gradual substitution of Al by transition metals. The crystal structure information studied by X-ray diffraction (XRD) depicts the formation of single phase spinel structure, while electron-dispersive X-ray spectroscopy (EDX) reveals the stoichiometric relations of Al, Cu and Co.

Keywords

energy storage, supercapacitors, transition metals, spinel structure, nanostructured materials, redox reactions