Boosting Electrochemical Performance via Extra‐Role of La‐Doped CeO2‐δ Interlayer for “Oxygen Provider” at High‐Current SOFC Operation
Abstract Utilizing rare earth doped ceria in solid oxide cells (SOCs) engineering is indeed a strategy aimed at enhancing the electrochemical devices' durability and activity. Particularly, Gd‐doped ceria (GDC) is actively used for barrier layer and catalytic additives in solid oxide fuel cells...
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Wiley
2024-12-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202402348 |
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| author | Xuan Dong Nguyen Sang Won Lee Su Ji Kim Jungdeok Park Bonseok Koo Seok Hee Lee Shiwoo Lee Hyung Tae Lim John T.S. Irvine Tae Ho Shin |
| author_facet | Xuan Dong Nguyen Sang Won Lee Su Ji Kim Jungdeok Park Bonseok Koo Seok Hee Lee Shiwoo Lee Hyung Tae Lim John T.S. Irvine Tae Ho Shin |
| author_sort | Xuan Dong Nguyen |
| collection | DOAJ |
| description | Abstract Utilizing rare earth doped ceria in solid oxide cells (SOCs) engineering is indeed a strategy aimed at enhancing the electrochemical devices' durability and activity. Particularly, Gd‐doped ceria (GDC) is actively used for barrier layer and catalytic additives in solid oxide fuel cells (SOFCs). In this study, experiments are conducted with La‐doped CeO2 (LDC), in which the Ce sites are predominantly occupied by La, to prevent the formation of the Ce‐Zr solid solution. This LDC is comparably used as a functional interlayer between the electrolyte and cathode if sintered at lower temperatures to avoid La2Zr2O7 impurity. In addition, the high substitution of La3+ into the ceria lattice improves the oxygen non‐stoichiometry of LDC, leading to accelerated electrochemical high performance by the additional role of LDC for oxygen supplier capacitance at high current operation. Thus, it is confirmed that the improved SOFC high performance is achieved at the maximum power density (MPD) of ≈2.15 W cm−2 at 800 °C when the optimized LDC buffer layer is hired at the anode‐supported typed‐Samsung's SOFC by lowering the sintering temperature to prevent LDC's impurity reaction. |
| format | Article |
| id | doaj-art-761feb69eddc423b99ef12e2d2740943 |
| institution | OA Journals |
| issn | 2198-3844 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj-art-761feb69eddc423b99ef12e2d27409432025-08-20T02:33:42ZengWileyAdvanced Science2198-38442024-12-011146n/an/a10.1002/advs.202402348Boosting Electrochemical Performance via Extra‐Role of La‐Doped CeO2‐δ Interlayer for “Oxygen Provider” at High‐Current SOFC OperationXuan Dong Nguyen0Sang Won Lee1Su Ji Kim2Jungdeok Park3Bonseok Koo4Seok Hee Lee5Shiwoo Lee6Hyung Tae Lim7John T.S. Irvine8Tae Ho Shin9Korea Institute of Ceramic Engineering and Technology (KICET) Gyongsangnam‐do Jinju‐Si 52851 Republic of KoreaKorea Institute of Ceramic Engineering and Technology (KICET) Gyongsangnam‐do Jinju‐Si 52851 Republic of KoreaKorea Institute of Ceramic Engineering and Technology (KICET) Gyongsangnam‐do Jinju‐Si 52851 Republic of KoreaSamsung Electro‐Mechanics Co. Ltd 150, Maeyoung‐ro (Maetan‐dong), Yeongtong‐gu, Suwon‐si Gyeonggi‐do 16674 Republic of KoreaSamsung Electro‐Mechanics Co. Ltd 150, Maeyoung‐ro (Maetan‐dong), Yeongtong‐gu, Suwon‐si Gyeonggi‐do 16674 Republic of KoreaKorea Institute of Ceramic Engineering and Technology (KICET) Gyongsangnam‐do Jinju‐Si 52851 Republic of KoreaSamsung Electro‐Mechanics Co. Ltd 150, Maeyoung‐ro (Maetan‐dong), Yeongtong‐gu, Suwon‐si Gyeonggi‐do 16674 Republic of KoreaDepartment of Materials Convergence and System Engineering Changwon National University Changwon 51140 Republic of KoreaSchool of Chemistry University of St Andrews St Andrews Fife KY16 9ST UKKorea Institute of Ceramic Engineering and Technology (KICET) Gyongsangnam‐do Jinju‐Si 52851 Republic of KoreaAbstract Utilizing rare earth doped ceria in solid oxide cells (SOCs) engineering is indeed a strategy aimed at enhancing the electrochemical devices' durability and activity. Particularly, Gd‐doped ceria (GDC) is actively used for barrier layer and catalytic additives in solid oxide fuel cells (SOFCs). In this study, experiments are conducted with La‐doped CeO2 (LDC), in which the Ce sites are predominantly occupied by La, to prevent the formation of the Ce‐Zr solid solution. This LDC is comparably used as a functional interlayer between the electrolyte and cathode if sintered at lower temperatures to avoid La2Zr2O7 impurity. In addition, the high substitution of La3+ into the ceria lattice improves the oxygen non‐stoichiometry of LDC, leading to accelerated electrochemical high performance by the additional role of LDC for oxygen supplier capacitance at high current operation. Thus, it is confirmed that the improved SOFC high performance is achieved at the maximum power density (MPD) of ≈2.15 W cm−2 at 800 °C when the optimized LDC buffer layer is hired at the anode‐supported typed‐Samsung's SOFC by lowering the sintering temperature to prevent LDC's impurity reaction.https://doi.org/10.1002/advs.202402348lanthanum‐doped ceriaoxygen partial pressureoxygen storage capacitancesolid oxide fuel cellsstarving conditions |
| spellingShingle | Xuan Dong Nguyen Sang Won Lee Su Ji Kim Jungdeok Park Bonseok Koo Seok Hee Lee Shiwoo Lee Hyung Tae Lim John T.S. Irvine Tae Ho Shin Boosting Electrochemical Performance via Extra‐Role of La‐Doped CeO2‐δ Interlayer for “Oxygen Provider” at High‐Current SOFC Operation Advanced Science lanthanum‐doped ceria oxygen partial pressure oxygen storage capacitance solid oxide fuel cells starving conditions |
| title | Boosting Electrochemical Performance via Extra‐Role of La‐Doped CeO2‐δ Interlayer for “Oxygen Provider” at High‐Current SOFC Operation |
| title_full | Boosting Electrochemical Performance via Extra‐Role of La‐Doped CeO2‐δ Interlayer for “Oxygen Provider” at High‐Current SOFC Operation |
| title_fullStr | Boosting Electrochemical Performance via Extra‐Role of La‐Doped CeO2‐δ Interlayer for “Oxygen Provider” at High‐Current SOFC Operation |
| title_full_unstemmed | Boosting Electrochemical Performance via Extra‐Role of La‐Doped CeO2‐δ Interlayer for “Oxygen Provider” at High‐Current SOFC Operation |
| title_short | Boosting Electrochemical Performance via Extra‐Role of La‐Doped CeO2‐δ Interlayer for “Oxygen Provider” at High‐Current SOFC Operation |
| title_sort | boosting electrochemical performance via extra role of la doped ceo2 δ interlayer for oxygen provider at high current sofc operation |
| topic | lanthanum‐doped ceria oxygen partial pressure oxygen storage capacitance solid oxide fuel cells starving conditions |
| url | https://doi.org/10.1002/advs.202402348 |
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