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Ce0.8Sm0.2O1.9 decorated with electron-blocking acceptor-doped BaCeO3 as electrolyte for low-temperature solid oxide fuel cells

文献类型：期刊论文

作者Gong, Zheng1,2; Sun, Wenping3; Cao, Jiafeng1,2; Shan, Duo1,2; Wu, Yusen1,2; Liu, Wei1,2,4
刊名ELECTROCHIMICA ACTA
出版日期2017-02-20
卷号228期号:无页码:226-232
关键词Composite Electrolyte Solid Oxide Fuel Cells In-situ Reaction Open Circuit Voltage Mixed Ion Conductor
DOI10.1016/j.electacta.2017.01.065
文献子类Article
英文摘要A series of composites with nominal compositions of BaCe0.8Sm0.2O3-delta(BCS)-Ce0.8Sm0.2O1.9(SDC) (20:80, 35:65, 50:50, 65:35 wt.%) are synthesized by a modified citric acid-nitrate sol-gel combustion method and evaluated as the electrolytes for low-temperature solid oxide fuel cells (SOFCs). The TEM results show that doped BaCeO3 decorated SDC particles are formed after calcining at 1000 degrees C for 3 h. X-ray diffraction results reveal that the composites are only composed of BaCeO3-based and SDC phases without any other impurity phases. Besides, BaCeO3-based phase is uniformly distributed in the sintered electrolytes according to EDS element mapping. The open cell voltages (OCVs) of the single cells increase gradually with increasing the proportion of BaCeO3-based phase, and are higher than those for bare SDCbased cells. Besides, the power performances of the cells are superior to SDC-based cells when BaCeO3 based phase is lower than 35 wt.%. Electrochemical impedance spectroscopy analysis indicates that, in addition to blocking electronic current leakage, BaCeO3-based phase would induce higher ohmic and polarization resistance, which is detrimental to power performance. Further specific effort should be focused on synthesizing uniform SDC@BCS core-shell electrolyte powders and minimizing the proportion of BCS phase towards high-performance SOFCs with high OCVs. (C) 2017 Elsevier Ltd. All rights reserved.
WOS关键词THIN BACE1-XSMXO3-ALPHA ; COMPOSITE ELECTROLYTES ; CERIA ; LAYER ; ANODE ; PERFORMANCE ; IMPROVEMENT ; ZIRCONIA ; CIRCUIT ; SOFCS
WOS研究方向Electrochemistry
语种英语
WOS记录号WOS:000395211600026
资助机构National Science Foundation of China(21676261 ; National Science Foundation of China(21676261 ; National Science Foundation of China(21676261 ; National Science Foundation of China(21676261 ; Fundamental Research Funds for the Central Universities(WK6030000016) ; Fundamental Research Funds for the Central Universities(WK6030000016) ; Fundamental Research Funds for the Central Universities(WK6030000016) ; Fundamental Research Funds for the Central Universities(WK6030000016) ; U1632131) ; U1632131) ; U1632131) ; U1632131) ; National Science Foundation of China(21676261 ; National Science Foundation of China(21676261 ; National Science Foundation of China(21676261 ; National Science Foundation of China(21676261 ; Fundamental Research Funds for the Central Universities(WK6030000016) ; Fundamental Research Funds for the Central Universities(WK6030000016) ; Fundamental Research Funds for the Central Universities(WK6030000016) ; Fundamental Research Funds for the Central Universities(WK6030000016) ; U1632131) ; U1632131) ; U1632131) ; U1632131)
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/32909]  
专题合肥物质科学研究院_中科院固体物理研究所
作者单位1.Univ Sci & Technol China, CAS Key Lab Mat Energy Convers, Hefei 230026, Peoples R China
2.Univ Sci & Technol China, Collaborat Innovat Ctr Suzhou Nano Sci & Technol, Hefei 230026, Peoples R China
3.Univ Wollongong, Inst Superconducting & Elect Mat, Australian Inst Innovat Mat, Wollongong, NSW 2522, Australia
4.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China
推荐引用方式
GB/T 7714		 Gong, Zheng,Sun, Wenping,Cao, Jiafeng,et al. Ce0.8Sm0.2O1.9 decorated with electron-blocking acceptor-doped BaCeO3 as electrolyte for low-temperature solid oxide fuel cells[J]. ELECTROCHIMICA ACTA,2017,228(无):226-232.
APA Gong, Zheng,Sun, Wenping,Cao, Jiafeng,Shan, Duo,Wu, Yusen,&Liu, Wei.(2017).Ce0.8Sm0.2O1.9 decorated with electron-blocking acceptor-doped BaCeO3 as electrolyte for low-temperature solid oxide fuel cells.ELECTROCHIMICA ACTA,228(无),226-232.
MLA Gong, Zheng,et al."Ce0.8Sm0.2O1.9 decorated with electron-blocking acceptor-doped BaCeO3 as electrolyte for low-temperature solid oxide fuel cells".ELECTROCHIMICA ACTA 228.无(2017):226-232.

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来源：合肥物质科学研究院

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