A series of alkali metal elements doped La2Ce2O7 electrolytes for solid oxide fuel cells

doi:10.1016/j.elecom.2021.107026

	A series of alkali metal elements doped La2Ce2O7 electrolytes for solid oxide fuel cells
	Zhang, Mohan 1,3; Wang, Di 1,3; Miao, Lina 1,3; Jin, Zongzi 1,3; Dong, Kuan 1,3; Liu, Wei 1,2,3
刊名	ELECTROCHEMISTRY COMMUNICATIONS
	2021-05-01
卷号	126
关键词	Alkali metal element doping Electrochemical performance Lanthanum-cerium oxide Solid oxide fuel cells
ISSN号	1388-2481
DOI	10.1016/j.elecom.2021.107026
通讯作者	Liu, Wei(wliu@ustc.edu.cn)
英文摘要	A series of alkali metal elements (like Li, Na, K, Rb, Cs) doped La2Ce2O7 were prepared by a citrate combustion method. We systematically investigated the effects of doping from several aspects, such as structure, conductivity, morphology and performance. All powders of La1.85M0.15Ce2O7-8 (M = Li, Na, K, Rb, Cs) have fluorite structures. The electrical conductivity first increases with the increase of ion radius of doped alkali element, and then decreases with the doping of Cesium. La1.85Rb0.15Ce2O7-8 exhibits the highest conductivity of 3 x 10-3 S cm-1 in dry air and 6.21 x 10-3 S cm-1 in wet H2 at 800 ?C. La1.85Rb0.15Ce2O7-8-based single cell exhibits the highest peak power performance with 1031 mWcm-2 at 700 ?C and the stable discharge time of it is more than 200 h. Thus, Rb-doping La2Ce2O7 material is considered as a promising electrolyte in solid oxide fuel cell.
资助项目	National Natural Science Foundation of China[21676261] ; National Natural Science Foundation of China[51972297]
WOS关键词	HIGH-PERFORMANCE ; PROTON CONDUCTOR ; SM ; DY
WOS研究方向	Electrochemistry
语种	英语
出版者	ELSEVIER SCIENCE INC
WOS记录号	WOS:000649674700003
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/122176]
专题	中国科学院合肥物质科学研究院
通讯作者	Liu, Wei
作者单位	1.Univ Sci & Technol China, CAS Key Lab Mat Energy Convers, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China 3.Univ Sci & Technol China, Collaborat Innovat Ctr Suzhou Nano Sci & Technol, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Mohan,Wang, Di,Miao, Lina,et al. A series of alkali metal elements doped La2Ce2O7 electrolytes for solid oxide fuel cells[J]. ELECTROCHEMISTRY COMMUNICATIONS,2021,126.
APA	Zhang, Mohan,Wang, Di,Miao, Lina,Jin, Zongzi,Dong, Kuan,&Liu, Wei.(2021).A series of alkali metal elements doped La2Ce2O7 electrolytes for solid oxide fuel cells.ELECTROCHEMISTRY COMMUNICATIONS,126.
MLA	Zhang, Mohan,et al."A series of alkali metal elements doped La2Ce2O7 electrolytes for solid oxide fuel cells".ELECTROCHEMISTRY COMMUNICATIONS 126(2021).