Journal
ELECTROCHIMICA ACTA
Volume 56, Issue 17, Pages 5919-5925Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2011.03.144
Keywords
Tin oxide; Anodization; Porous structure; 1D tunnels; Tin electro-deposit
Categories
Funding
- Converging Research Center through the Ministry of Education, Science and Technology [2010K001091]
- Korean Ministry of Education, Science and Technology
- MOST
- KOSEF [R15-2006-022-01001-0]
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Anodically formed tin oxide typically displays a self-ordered porous structure with a large degree of cracking. In addition, its surface pores are frequently closed, especially in the case where the deposited tin film is anodized. Herein, we report a simple way of eliminating virtually all the inner cracks and ensuring that the surface pores are totally open, leading to well-defined one-dimensional anodic tin oxide. The current efficiency ratio of oxygen gas generation to tin oxide formation and the amount of charge allocated for pore initiation are suggested to be the key factors affecting the internal crack development and pore opening, respectively. Pulsed anodization proved to be quite an effective way to create a well-defined structure with few inner cracks and completely open pores. (C) 2011 Elsevier Ltd. All rights reserved.
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