DICP OpenIR
Subject Area物理化学
High-efficiency intermediate temperature solid oxide electrolyzer cells for the conversion of carbon dioxide to fuels
Yan, Jingbo1,2; Chen, Hao3; Dogdibegovic, Emir3; Stevenson, Jeffry W.4; Cheng, Mojie1; Zhou, Xiao-Dong3; Cheng MJ(程谟杰)
KeywordHigh Temperature Electrolysis Co2 Reduction Distribution Of Relaxation Times Analysis Carbon Deposition
Source PublicationJOURNAL OF POWER SOURCES
2014-04-15
DOI10.1016/j.jpowsour.2013.11.047
Volume252Issue:1Pages:79-84
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectElectrochemistry ; Energy & Fuels
WOS Research AreaElectrochemistry ; Energy & Fuels
WOS KeywordELECTROCHEMICAL PERFORMANCE ; IMPEDANCE SPECTRA ; OXYGEN ELECTRODES ; NUCLEAR-ENERGY ; GAS-TRANSPORT ; COELECTROLYSIS ; DEGRADATION ; CATHODE ; ANODES ; STEAM
AbstractElectrochemical reduction of carbon dioxide in the intermediate temperature region was investigated by utilizing a reversible solid oxide electrolysis cell (SOEC). The current potential (i-V) curve exhibited a nonlinear characteristic at low current density. Differentiation of i-V curves revealed that the cell area specific resistance (ASR) was current-dependent and had its maximum in electrolysis mode and minimum in fuel cell mode. Impedance measurements were performed under different current densities and gas compositions, and the results were analyzed by calculating the distribution of relaxation times. The ASR variation resulted from the difference in electrochemical reactions occurring on the Ni-YSZ electrode, i.e., Ni-YSZ is a better electrode for CO oxidation than for CO2 reduction. Coke formation on Ni-YSZ played a crucial role in affecting its electrolysis performance in the intermediate temperature region. The ASR apex was associated with a decrease in cell temperature during electrolysis due to the endothermic nature of CO2 reduction reaction. It was postulated that such a decrease in temperature and rise in CO concentration led to coke formation. As a consequence, higher temperature (>700 degrees C), higher CO2 concentration (>50%), and the presence of hydrogen or steam are recommended for efficient CO2 reduction in solid oxide electrochemical cells. (C) 2013 Elsevier B.V. All rights reserved.
Language英语
WOS IDWOS:000347369600012
Citation statistics
Cited Times:39[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/143994
Collection中国科学院大连化学物理研究所
Corresponding AuthorCheng MJ(程谟杰)
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Div Fuel Cells, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Univ S Carolina, Dept Chem Engn, Columbia, SC 29028 USA
4.Pacific NW Natl Lab, Richland, WA 99352 USA
Recommended Citation
GB/T 7714
Yan, Jingbo,Chen, Hao,Dogdibegovic, Emir,et al. High-efficiency intermediate temperature solid oxide electrolyzer cells for the conversion of carbon dioxide to fuels[J]. JOURNAL OF POWER SOURCES,2014,252(1):79-84.
APA Yan, Jingbo.,Chen, Hao.,Dogdibegovic, Emir.,Stevenson, Jeffry W..,Cheng, Mojie.,...&程谟杰.(2014).High-efficiency intermediate temperature solid oxide electrolyzer cells for the conversion of carbon dioxide to fuels.JOURNAL OF POWER SOURCES,252(1),79-84.
MLA Yan, Jingbo,et al."High-efficiency intermediate temperature solid oxide electrolyzer cells for the conversion of carbon dioxide to fuels".JOURNAL OF POWER SOURCES 252.1(2014):79-84.
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