Synthesis and ionic conductivity of mechanically synthesized yttrium-doped ceria solid solutions
Doped ceria is considered the most promising high-conducting electrolyte, alternative to the commercially used yttria-stabilized zirconia. The ceria fluorite structure is very tolerant to dissolution of lower valent metal ions. The present employed mechanical method, introduces comparison of mechani...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Asian Network for Scientific Information
2011
|
| Online Access: | http://psasir.upm.edu.my/id/eprint/25178/ http://psasir.upm.edu.my/id/eprint/25178/1/Synthesis%20and%20ionic%20conductivity%20of%20mechanically%20synthesized%20yttrium-doped%20ceria%20solid%20solutions.pdf |
| _version_ | 1848845238488006656 |
|---|---|
| author | Ong, Poh Shing Tan, Yen Ping Yap, Taufiq Yun Hin Zainal, Zulkarnain |
| author_facet | Ong, Poh Shing Tan, Yen Ping Yap, Taufiq Yun Hin Zainal, Zulkarnain |
| author_sort | Ong, Poh Shing |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Doped ceria is considered the most promising high-conducting electrolyte, alternative to the commercially used yttria-stabilized zirconia. The ceria fluorite structure is very tolerant to dissolution of lower valent metal ions. The present employed mechanical method, introduces comparison of mechanical-synthesized yttrium-doped ceria system, denoted as Ce1-xYxO2-δ (0.05≤x≤0.4), which were successfully synthesized by both conventional solid-state and mechanochemical methods. In mechanochemical reaction, fine-grained powders with uniform grain size distribution were obtained. X-ray diffraction analysis showed all solid solutions were single phase with cubic fluorite structure. The electrical conductivity of sintered samples of calcium doped ceria compounds were investigated in air as a function of temperature using AC impedance spectroscopy. Impedance data showed that yttrium-doped ceria electrolyte is a good ionic conductor with conductivity as high as 10-3 ohm cm-1. Further characterization using Differential Thermal Analysis (DTA), Thermo Gravimetric Analysis (TGA) and Scanning Electron Microscopy (SEM) were carried out. |
| first_indexed | 2025-11-15T08:43:38Z |
| format | Article |
| id | upm-25178 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T08:43:38Z |
| publishDate | 2011 |
| publisher | Asian Network for Scientific Information |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-251782016-11-29T07:17:16Z http://psasir.upm.edu.my/id/eprint/25178/ Synthesis and ionic conductivity of mechanically synthesized yttrium-doped ceria solid solutions Ong, Poh Shing Tan, Yen Ping Yap, Taufiq Yun Hin Zainal, Zulkarnain Doped ceria is considered the most promising high-conducting electrolyte, alternative to the commercially used yttria-stabilized zirconia. The ceria fluorite structure is very tolerant to dissolution of lower valent metal ions. The present employed mechanical method, introduces comparison of mechanical-synthesized yttrium-doped ceria system, denoted as Ce1-xYxO2-δ (0.05≤x≤0.4), which were successfully synthesized by both conventional solid-state and mechanochemical methods. In mechanochemical reaction, fine-grained powders with uniform grain size distribution were obtained. X-ray diffraction analysis showed all solid solutions were single phase with cubic fluorite structure. The electrical conductivity of sintered samples of calcium doped ceria compounds were investigated in air as a function of temperature using AC impedance spectroscopy. Impedance data showed that yttrium-doped ceria electrolyte is a good ionic conductor with conductivity as high as 10-3 ohm cm-1. Further characterization using Differential Thermal Analysis (DTA), Thermo Gravimetric Analysis (TGA) and Scanning Electron Microscopy (SEM) were carried out. Asian Network for Scientific Information 2011 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/25178/1/Synthesis%20and%20ionic%20conductivity%20of%20mechanically%20synthesized%20yttrium-doped%20ceria%20solid%20solutions.pdf Ong, Poh Shing and Tan, Yen Ping and Yap, Taufiq Yun Hin and Zainal, Zulkarnain (2011) Synthesis and ionic conductivity of mechanically synthesized yttrium-doped ceria solid solutions. Journal of Applied Sciences, 11 (8). pp. 1285-1290. ISSN 1812-5654; ESSN: 1812-5662 http://www.scialert.net/abstract/?doi=jas.2011.1285.1290 10.3923/jas.2011.1285.1290 |
| spellingShingle | Ong, Poh Shing Tan, Yen Ping Yap, Taufiq Yun Hin Zainal, Zulkarnain Synthesis and ionic conductivity of mechanically synthesized yttrium-doped ceria solid solutions |
| title | Synthesis and ionic conductivity of mechanically synthesized yttrium-doped ceria solid solutions |
| title_full | Synthesis and ionic conductivity of mechanically synthesized yttrium-doped ceria solid solutions |
| title_fullStr | Synthesis and ionic conductivity of mechanically synthesized yttrium-doped ceria solid solutions |
| title_full_unstemmed | Synthesis and ionic conductivity of mechanically synthesized yttrium-doped ceria solid solutions |
| title_short | Synthesis and ionic conductivity of mechanically synthesized yttrium-doped ceria solid solutions |
| title_sort | synthesis and ionic conductivity of mechanically synthesized yttrium-doped ceria solid solutions |
| url | http://psasir.upm.edu.my/id/eprint/25178/ http://psasir.upm.edu.my/id/eprint/25178/ http://psasir.upm.edu.my/id/eprint/25178/ http://psasir.upm.edu.my/id/eprint/25178/1/Synthesis%20and%20ionic%20conductivity%20of%20mechanically%20synthesized%20yttrium-doped%20ceria%20solid%20solutions.pdf |