2020年
La<inf>0.65</inf>Ca<inf>0.35</inf>FeO<inf>3-δ</inf> as a novel Sr- and Co-free cathode material for solid oxide fuel cells
Journal of Power Sources
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- 巻
- 448
- 号
- 開始ページ
- 227426
- 終了ページ
- 227426
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.jpowsour.2019.227426
- 出版者・発行元
- Elsevier {BV}
This study is conducted to evaluate the electrochemical performance of anode-supported solid oxide fuel cells (SOFCs) fabricated with La0.65Ca0.35FeO3-delta (LCaF)-based cathodes. LCaF has a high oxygen permeation flux Joe compared with typical mixed ionic-electronic conductors composed of La0.6Sr0.4Co0.2Fe0.8O3-delta (LSCoF) oxygen permeation membranes. LCaF powder with a high specific surface area (S-BET = 9.62 m(2) g(-1)) and high crystallinity is prepared by a citrate-based liquid mixing technique. The anode-supported cell with an LCaF cathode has a high power density of 3.4 W cm(-2) at 800 degrees C under a terminal voltage of 0.7 V. The performance of the cells is further enhanced by preparing a composite cathode of LCaF-Gd-doped CeO2 (GDC). The maximum power density of the cell fabricated with the LCaF-GDC composite cathode reaches 4.4 W cm(-2) at 800 degrees C. Compared with a cell with a cathode prepared from commercial La0.6Sr0.4Co0.2Fe0.8O3-delta (LSCoF), this cell exhibites superior electrochemical performance at all temperatures within the range of 500-800 degrees C. The high electronic and ionic conductivity of LCaF is presumed to have contributed to the superior electrochemical performance of the anodesupported cells with LCaF-based cathodes. LCaF is found to be a promising candidate as a cathode material for SOFCs.
- リンク情報
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- DOI
- https://doi.org/10.1016/j.jpowsour.2019.227426
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000509632300055&DestApp=WOS_CPL
- Scopus Url
- http://www.scopus.com/inward/record.url?eid=2-s2.0-85075821859&partnerID=MN8TOARS
- ID情報
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- DOI : 10.1016/j.jpowsour.2019.227426
- ISSN : 0378-7753
- eISSN : 1873-2755
- ORCIDのPut Code : 77607645
- SCOPUS ID : 85075821859
- Web of Science ID : WOS:000509632300055