Beaded manganese oxide (Mn sub(2)O sub(3)) nanofibers: preparation and application for capacitive energy storage

Here, we report a surfactant-free electrospinning based method for the synthesis of beaded manganese oxide (Mn sub(2)O sub(3)) nanofibers and their application as supercapacitor electrodes. The beaded morphology of the fibers was confirmed through electron microscopic analysis. The highly crystallin...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2016-05, Vol.4 (20), p.7883-7891
Hauptverfasser: Kolathodi, Muhamed Shareef, Hanumantha Rao, Samerender Nagam, Natarajan, Tirupattur Srinivasan, Singh, Gurpreet
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Here, we report a surfactant-free electrospinning based method for the synthesis of beaded manganese oxide (Mn sub(2)O sub(3)) nanofibers and their application as supercapacitor electrodes. The beaded morphology of the fibers was confirmed through electron microscopic analysis. The highly crystalline nature and lattice strain of the fibers were verified by X-ray diffraction analysis while the chemical composition of the fibers was studied by using X-ray photoelectron and Raman spectroscopy. The electrochemical properties of the Mn sub(2)O sub(3) nanofiber electrode were investigated using cyclic voltammetry, galvanostatic charge/discharge, and electrochemical impedance spectroscopy in a 0.5 M Na sub(2)SO sub(4) aqueous electrolyte. The specific capacitance of the Mn sub(2)O sub(3) beaded nanofibers was found to be 358 F g super(-1) at a current density of 0.5 A g super(-1). Lattice strain-induced ionic and electronic defects enhanced the surface properties of the Mn sub(2)O sub(3) nanofibers, thereby improving their electrochemical properties.
ISSN:2050-7488
2050-7496
DOI:10.1039/c6ta01948j