MnO(2)/TiN heterogeneous nanostructure design for electrochemical energy storage

Cited 50 time in webofscience Cited 0 time in scopus
  • Hit : 313
  • Download : 0
MnO2/TiN nanotubes are fabricated using facile deposition techniques to maximize the surface area of the electroactive material for use in electrochemical capacitors. Atomic layer deposition is used to deposit conformal nanotubes within an anodic aluminium oxide template. After template removal, the inner and outer surfaces of the TiN nanotubes are exposed for electrochemical deposition of manganese oxide. Electron microscopy shows that the MnO2 is deposited on both the inside and outside of TiN nanotubes, forming the MnO2/TiN nanotubes. Cyclic voltammetry and galvanostatic charge-discharge curves are used to characterize the electrochemical properties of the MnO2/TiN nanotubes. Due to the close proximity of MnO2 with the highly conductive TiN as well as the overall high surface area, the nanotubes show very high specific capacitance (662 F g(-1) reported at 45 A g(-1)) as a supercapacitor electrode material. The highly conductive and mechanically stable TiN greatly enhances the flow of electrons to the MnO2 material, while the high aspect ratio nanostructure of TiN creates a large surface area for short diffusion paths for cations thus improving high power. Combining the favourable structural, electrical and energy properties of MnO2 and TiN into one system allows for a promising electrode material for supercapacitors.
Publisher
ROYAL SOC CHEMISTRY
Issue Date
2011
Language
English
Article Type
Article
Keywords

MANGANESE OXIDE; CAPACITIVE CHARACTERISTICS; NANOWIRE ARRAYS; SUPERCAPACITORS; DEPOSITION; ELECTRODES

Citation

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, v.13, no.33, pp.15221 - 15226

ISSN
1463-9076
DOI
10.1039/c1cp21815h
URI
http://hdl.handle.net/10203/95099
Appears in Collection
Files in This Item
There are no files associated with this item.
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 50 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0