Study on synthesis and electrochemical properties of hematite nanotubes for energy storage in supercapacitor

Journal Article · Wed Jun 24 04:00:00 EDT 2015 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4917727· OSTI ID:22490271

Nathan, D. Muthu Gnana Theresa

Hematite nanotubes (α-Fe{sub 2}O{sub 3} NTs) are synthesized via a cost-effective and environmental-friendly hydrothermal technique. Field emission scanning electron microscopy and X-ray powder diffraction analyses reveal the formation of α-Fe{sub 2}O{sub 3} NTs with high crystallinity and purity. Optical behavior of α-Fe{sub 2}O{sub 3} NTs is studied employing UV-visible spectroscopy. Electrochemical properties of the as-prepared electrode material are investigated by cyclic voltammetry, chronopotentiometry and electrochemical impedance spectroscopy in a three electrode cell. The synthesized α-Fe{sub 2}O{sub 3} NTs present enhanced pseudocapacitive performance with high specific capacity of 230 Fg{sup −1} at current density of 1 Ag{sup −1}. The prepared α-Fe{sub 2}O{sub 3} NTs can be utilized as a potential electrode material for electrochemical capacitor applications.

• OSTI ID: 22490271
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1665; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION SPECTROSCOPY
CAPACITORS
CAPACITY
CURRENT DENSITY
ELECTROCHEMISTRY
ELECTRODES
ENERGY STORAGE
FERRITES
FIELD EMISSION
HEMATITE
IMPEDANCE
IRON OXIDES
NANOTUBES
SCANNING ELECTRON MICROSCOPY
SYNTHESIS
VOLTAMETRY
X-RAY DIFFRACTION