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Journal article
A study on the electrophoretic deposition of gadolinium doped ceria on polypyrrole coated yttrium stabilized zirconia
Journal of colloid and interface science, Vol.555(C), pp.115-123
11/2019
PMID: 31377637
Web of Science ID: WOS:000488652300012
Abstract
The technological feasibility of electrophoretic deposition (EPD) of gadolinium doped ceria (GDC) on polypyrrole (PPy) coated yttrium stabilized zirconia (YSZ) has been reported. To enhance the EPD technique for the fabrication of GDC layer and to deepen the understanding of EPD, the fundamental characteristics of EPD of GDC on PPy coated YSZ were investigated. The deposition rate of GDC on PPy coated YSZ is slower than that on graphite under the same voltage. An H+ ion accumulation zone is formed in the vicinity of PPy coated YSZ after applying the voltage. The thickness of this ion accumulation zone initially increases and then decreases. Finally, the ion accumulation zone is replaced by an ion depletion zone. The absorbed H+ ions are desorbed from the particles after deposition and are then reduced to hydrogen gas. The reduction of absorbed H+ ions and free H+ ions corresponds to the deposition and the unavoidable side reaction, respectively. A new parameter, f, the percentage of electric charged associated with the reduction of absorbed H
ions in the total charge, is introduced to reflect the competitive relationship between the deposition and the inevitable side reaction. f decreases with the increase of current density.
Details
- Title
- A study on the electrophoretic deposition of gadolinium doped ceria on polypyrrole coated yttrium stabilized zirconia
- Publication Details
- Journal of colloid and interface science, Vol.555(C), pp.115-123
- Resource Type
- Journal article
- Publisher
- Elsevier
- Number of pages
- 9
- Grant note
- U.S. Department of Energy - National Energy Technology Laboratory (NETL): DE-FE-23407
This work is supported by U.S. Department of Energy - National Energy Technology Laboratory (NETL) under the contract number DE-FE-23407. We would like to thank the Technology Manager Dr. Shailesh Vora and Project Manager Mr. Steven Markovich for the technical guidance and financial support.
- Copyright
- © 2019 Elsevier Inc. All rights reserved.
- Identifiers
- WOS:000488652300012; 99381656186306600
- Academic Unit
- Mechanical Engineering; Hal Marcus College of Science and Engineering
- Language
- English