Title

Fabrication of nanofibers of metal oxides for energy storage applications

Document Type

Graduate Research

Publication Date

4-7-2016

Department

Chemistry

Abstract

Nanostructured materials have attracted considerable research interest for their applications as catalyst, energy storage, fuel cells, etc. The main objective of this work is to synthesize and characterize nanofibers of metal oxides using electrospun technique and use them for energy storage applications. Various metal oxides such as NiMn2O4, CoMn2O4 and ZnMn2O4 were prepared as 1 dimensional (1-D) architecture using processable polymers and metal salts. The synthesized nanofibers were structurally and electrochemically characterized. The supercapacitive performance of these nanofibers was examined using cyclic voltammetry (CV) and galvanostatic charge-discharge techniques. The CoMn2O4 nanofibers showed a promising values of ~ 120 F/g in 3M NaOH. The effect of different electrolytes such as liOH, NaOH and KOH on the electrochemical properties of these metal oxide nanofibers was also investigated. It was observed that the charge storage capacity depends on the electrolyte used. The supercapacitor device fabricated using these nanofibers showed that charge storage capacity increases with increase in temperature. Our results suggest that electospun nanofibers could be used for energy storage applications.

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