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Investigation of a Ba(0.5)Sr(0.5)Co(0.8)Fe(0.2)O3-delta based cathode IT-SOFC - I. The effect of CO2 on the cell performance
Yan, A; Cheng, M; Dong, YL; Yang, WS; Maragou, V; Song, SQ; Tsiakaras, P
KeywordIntermediate-temperature Solid Oxide Fuel Cells (It-sofcs) Bscf Cathodes Effect Of Carbon Dioxide
Source PublicationAPPLIED CATALYSIS B-ENVIRONMENTAL
2006-06-20
DOI10.1016/j.apcatb.2006.02.021
Volume66Issue:1-2Pages:64-71
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Physical ; Engineering, Environmental ; Engineering, Chemical
WOS Research AreaChemistry ; Engineering
WOS KeywordOXIDE FUEL-CELLS ; LOW-TEMPERATURE SOFCS ; ANODE-SUPPORTED SOFC ; COMPOSITE CATHODES ; ELECTROCHEMICAL PROPERTIES ; OXYGEN-TRANSPORT ; PEROVSKITE ; ELECTROLYTES ; ETHANOL ; OPTIMIZATION
AbstractA Ba0.5Sr0.5Co0.08Fe0.2O3-delta (BSCF) based cathode intermediate temperature solid oxide fuel cell (IT-SOFC) was fabricated and tested. The effect of carbon dioxide on the performance of BSCF cathode was evaluated at temperatures ranging from 450 to 750 degrees C. The current density was recorded at a constant discharge of voltage value and the electrochemical impedance spectra (EIS) measurements were carried out in the absence and in the presence of CO2 in the oxidant gas line (cathode). It was found that the presence even of relatively small quantities (0.28-3.07%) of CO2 negatively affects the H-2-IT-SOFC performance. It was shown that as the CO2 content in the cathode side increases and as the operation temperature decreases, the fuel cell performance is seriously aggravated up to 550 degrees C in a reversible way. A further decrease of the operation temperature deteriorates the SOFC performance irreversibly. However, the cell performance can be recovered after treatment at 800 degrees C in pure oxygen. It was also shown that as the CO2 content increases, the rate of oxygen electrochemical reduction decreases and the corresponding apparent activation energy increases linearly. The EIS results show that the interface resistance increases dramatically after carbon dioxide is added into the oxidant gas line. It is believed that carbon dioxide and temperature, acting in a synergetic way, decrease at least the cathode activity for oxygen reduction. This behaviour could be attributed to the strong carbon dioxide adsorption on the BSCF surface and to the formation of carbonates at temperatures as low as 500 and 450 degrees C. (c) 2006 Elsevier B.V. All rights reserved.
Language英语
WOS IDWOS:000238295600008
Citation statistics
Cited Times:144[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/140334
Collection中国科学院大连化学物理研究所
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, Fuel Cell R&D Ctr, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
3.Univ Thessalia, Dept Mech & Ind Engn, Volos 38334, Greece
Recommended Citation
GB/T 7714
Yan, A,Cheng, M,Dong, YL,et al. Investigation of a Ba(0.5)Sr(0.5)Co(0.8)Fe(0.2)O3-delta based cathode IT-SOFC - I. The effect of CO2 on the cell performance[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2006,66(1-2):64-71.
APA Yan, A.,Cheng, M.,Dong, YL.,Yang, WS.,Maragou, V.,...&Tsiakaras, P.(2006).Investigation of a Ba(0.5)Sr(0.5)Co(0.8)Fe(0.2)O3-delta based cathode IT-SOFC - I. The effect of CO2 on the cell performance.APPLIED CATALYSIS B-ENVIRONMENTAL,66(1-2),64-71.
MLA Yan, A,et al."Investigation of a Ba(0.5)Sr(0.5)Co(0.8)Fe(0.2)O3-delta based cathode IT-SOFC - I. The effect of CO2 on the cell performance".APPLIED CATALYSIS B-ENVIRONMENTAL 66.1-2(2006):64-71.
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