Type

Journal Article

Authors

Colm O'Dwyer
Justin D. Holmes
John O'Connell
Maria O'Sullivan
Eileen Armstrong

Subjects

Chemistry

Topics
metal oxide inverse opal electrophoretic deposition porous materials template electrodeposition photonic crystals vanadium oxide

3D vanadium oxide inverse opal growth by electrodeposition (2015)

Abstract Three-dimensional vanadium pentoxide (V2O5) material architectures in the form of inverse opals (IOs) were fabricated using a simple electrodeposition process into artificial opal templates on stainless steel foil using an aqueous solution of VOSO4.χH2O with added ethanol. The direct deposition of V2O5 IOs was compared with V2O5 planar electrodeposition and confirms a similar progressive nucleation and growth mechanism. An in-depth examination of the chemical and morphological nature of the IO material was performed using X-ray crystallography, X-ray photoelectron spectroscopy, Raman scattering and scanning/transmission electron microscopy. Electrodeposition is demonstrated to be a function of the interstitial void fraction of the artificial opal and ionic diffusivity that leads to high quality, phase pure V2O5 inverse opals is not adversely affected by diffusion pathway tortuosity. Methods to alleviate electrodeposited overlayer formation on the artificial opal templates for the fabrication of the porous 3D structures are also demonstrated. Such a 3D material is ideally suited as a cathode for lithium ion batteries, electrochromic devices, sensors and for applications requiring high surface area electrochemically active metal oxides.
Collections Ireland -> University College Cork -> College of Science, Engineering and Food Science
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Full list of authors on original publication

Colm O'Dwyer, Justin D. Holmes, John O'Connell, Maria O'Sullivan, Eileen Armstrong

Experts in our system

1
Colm O'Dwyer
University College Cork
Total Publications: 121
 
2
Justin D. Holmes
University College Cork
Total Publications: 182
 
3
John O'Connell
University College Cork
Total Publications: 17
 
4
Eileen Armstrong
University College Cork
Total Publications: 8