(La, Pr)0.8Sr0.2FeO3-δ-Sm 0.2Ce0.8O2-δ composite cathode for proton-conducting solid oxide fuel cells

Handle URI:
http://hdl.handle.net/10754/564968
Title:
(La, Pr)0.8Sr0.2FeO3-δ-Sm 0.2Ce0.8O2-δ composite cathode for proton-conducting solid oxide fuel cells
Authors:
Chen, Yonghong; Gu, Qingwen; Tian, Dong; Ding, Yanzhi; Lu, Xiaoyong; Yu, Weili; Isimjan, Tayirjan T.; Lin, Bin
Abstract:
Mixed rare-earth (La, Pr)0.8Sr0.2FeO 3-δ-Sm0.2Ce0.8O2-δ (LPSF-SDC) composite cathode was investigated for proton-conducting solid oxide fuel cells based on protonic BaZr0.1Ce0.7Y 0.2O3-δ (BZCY) electrolyte. The powders of La 0.8-xPrxSr0.2FeO3-δ (x = 0, 0.2, 0.4, 0.6), Sm0.2Ce0.8O2-δ (SDC) and BaZr0.1Ce0.7Y0.2O3-δ (BZCY) were synthesized by a citric acid-nitrates self-propagating combustion method. The XRD results indicate that La0.8-xPrxSr 0.2FeO3-δ samples calcined at 950 °C exhibit perovskite structure and there are no interactions between LPSF0.2 and SDC at 1100 °C. The average thermal expansion coefficient (TEC) of LPSF0.2-SDC, BZCY and NiO-BZCY is 12.50 × 10-6 K-1, 13.51 × 10-6 K-1 and 13.47 × 10-6 K -1, respectively, which can provide good thermal compatibility between electrodes and electrolyte. An anode-supported single cell of NiO-BZCY|BZCY|LPSF0.2-SDC was successfully fabricated and operated from 700 °C to 550 °C with humidified hydrogen (∼3% H2O) as fuel and the static air as oxidant. A high maximum power density of 488 mW cm -2, an open-circuit potential of 0.95 V, and a low electrode polarization resistance of 0.071 Ω cm2 were achieved at 700 °C. Preliminary results demonstrate that LPSF0.2-SDC composite is a promising cathode material for proton-conducting solid oxide fuel cells. © 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program; Solar and Photovoltaic Engineering Research Center (SPERC)
Publisher:
Elsevier BV
Journal:
International Journal of Hydrogen Energy
Issue Date:
Aug-2014
DOI:
10.1016/j.ijhydene.2014.04.042
Type:
Article
ISSN:
03603199
Sponsors:
The authors would like to thank the financial support from Chinese Natural Science Foundation on contract Grant (No. 51102107 and No. 51202080), Anhui Science and Technology Project (No. 1206c0805038) and Huainan Science and Technology Project (No. 2010A03203).
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Materials Science and Engineering Program; Solar and Photovoltaic Engineering Research Center (SPERC)

Full metadata record

DC FieldValue Language
dc.contributor.authorChen, Yonghongen
dc.contributor.authorGu, Qingwenen
dc.contributor.authorTian, Dongen
dc.contributor.authorDing, Yanzhien
dc.contributor.authorLu, Xiaoyongen
dc.contributor.authorYu, Weilien
dc.contributor.authorIsimjan, Tayirjan T.en
dc.contributor.authorLin, Binen
dc.date.accessioned2015-08-04T07:26:34Zen
dc.date.available2015-08-04T07:26:34Zen
dc.date.issued2014-08en
dc.identifier.issn03603199en
dc.identifier.doi10.1016/j.ijhydene.2014.04.042en
dc.identifier.urihttp://hdl.handle.net/10754/564968en
dc.description.abstractMixed rare-earth (La, Pr)0.8Sr0.2FeO 3-δ-Sm0.2Ce0.8O2-δ (LPSF-SDC) composite cathode was investigated for proton-conducting solid oxide fuel cells based on protonic BaZr0.1Ce0.7Y 0.2O3-δ (BZCY) electrolyte. The powders of La 0.8-xPrxSr0.2FeO3-δ (x = 0, 0.2, 0.4, 0.6), Sm0.2Ce0.8O2-δ (SDC) and BaZr0.1Ce0.7Y0.2O3-δ (BZCY) were synthesized by a citric acid-nitrates self-propagating combustion method. The XRD results indicate that La0.8-xPrxSr 0.2FeO3-δ samples calcined at 950 °C exhibit perovskite structure and there are no interactions between LPSF0.2 and SDC at 1100 °C. The average thermal expansion coefficient (TEC) of LPSF0.2-SDC, BZCY and NiO-BZCY is 12.50 × 10-6 K-1, 13.51 × 10-6 K-1 and 13.47 × 10-6 K -1, respectively, which can provide good thermal compatibility between electrodes and electrolyte. An anode-supported single cell of NiO-BZCY|BZCY|LPSF0.2-SDC was successfully fabricated and operated from 700 °C to 550 °C with humidified hydrogen (∼3% H2O) as fuel and the static air as oxidant. A high maximum power density of 488 mW cm -2, an open-circuit potential of 0.95 V, and a low electrode polarization resistance of 0.071 Ω cm2 were achieved at 700 °C. Preliminary results demonstrate that LPSF0.2-SDC composite is a promising cathode material for proton-conducting solid oxide fuel cells. © 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.en
dc.description.sponsorshipThe authors would like to thank the financial support from Chinese Natural Science Foundation on contract Grant (No. 51102107 and No. 51202080), Anhui Science and Technology Project (No. 1206c0805038) and Huainan Science and Technology Project (No. 2010A03203).en
dc.publisherElsevier BVen
dc.subjectComposite cathodeen
dc.subjectElectrochemical performanceen
dc.subjectPolarizationen
dc.subjectProton-conducting solid oxide fuel cellsen
dc.title(La, Pr)0.8Sr0.2FeO3-δ-Sm 0.2Ce0.8O2-δ composite cathode for proton-conducting solid oxide fuel cellsen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.contributor.departmentSolar and Photovoltaic Engineering Research Center (SPERC)en
dc.identifier.journalInternational Journal of Hydrogen Energyen
dc.contributor.institutionAnhui Key Laboratory of Low Temperature Co-fired Materials, Department of Chemistry, Huainan Normal University, Huainan, Anhui, 232001, Chinaen
dc.contributor.institutionCAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China (USTC), Hefei 230026, Chinaen
kaust.authorYu, Weilien
kaust.authorIsimjan, Tayirjan T.en
kaust.authorLin, Binen
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