Highly resistive intergranular phases in solid electrolytes: an overview
- Authors
- Lee, Jong-Heun
- Issue Date
- 9월-2009
- Publisher
- SPRINGER WIEN
- Keywords
- Electrochemistry; Ceramics; Charge transfer; Grain-boundary conduction; Intergranular phase
- Citation
- MONATSHEFTE FUR CHEMIE, v.140, no.9, pp.1081 - 1094
- Indexed
- SCIE
SCOPUS
- Journal Title
- MONATSHEFTE FUR CHEMIE
- Volume
- 140
- Number
- 9
- Start Page
- 1081
- End Page
- 1094
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/119436
- DOI
- 10.1007/s00706-009-0111-0
- ISSN
- 0026-9247
- Abstract
- The siliceous intergranular phase in acceptor-doped zirconia and ceria and its effect on the ionic conduction across the grain boundaries were reviewed. Not only the abundant siliceous intergranular liquid phase, but also the monolayer-level siliceous intergranular segregation significantly deteriorates the grain-boundary conduction. To decrease the harmful effect of the resistive siliceous phase at the grain boundary, 'additive scavenging' or 'precursor scavenging' can be employed. The former involves the addition of a secondary phase or another acceptor material with a very high chemical affinity for the siliceous phase, while the latter involves the intergranular phase changing from having a continuous (blocking) configuration to having a discrete (non-blocking) configuration. The mechanisms of various scavenging reactions have been explained, compared, and discussed.
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Collections - College of Engineering > Department of Materials Science and Engineering > 1. Journal Articles
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