3D Vanadium Oxide Inverse Opal Growth by Electrodeposition

被引:34
作者
Armstrong, Eileen [1 ]
O'Sullivan, Maria [1 ]
O'Connell, John [1 ]
Holmes, Justin D. [1 ,2 ,3 ]
O'Dwyer, Colm [1 ,2 ]
机构
[1] Natl Univ Ireland Univ Coll Cork, Dept Chem, Cork T12 YN60, Ireland
[2] Tyndall Natl Inst, Micronano Syst Ctr, Cork T12 R5CP, Ireland
[3] Univ Dublin Trinity Coll, AMBER CRANN, Dublin D02 PN40 2, Ireland
基金
爱尔兰科学基金会;
关键词
RECHARGEABLE LITHIUM BATTERIES; PHOTONIC CRYSTALS; ENERGY-STORAGE; ELECTROCHEMICAL PROPERTIES; THIN-FILMS; V2O5; DIFFUSION; CATHODE; NANOSTRUCTURES; INTERCALATION;
D O I
10.1149/2.0541514jes
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
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 center dot chi H2O 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. (C) The Author(s) 2015. Published by ECS. This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 License (CC BY, http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse of the work in any medium, provided the original work is properly cited. All rights reserved.
引用
收藏
页码:D605 / D612
页数:8
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