Gd0.2Ce0.8O2包覆LaNi0.6Fe0.4O3-&delta;阴极制备及性能

CORC > 厦门大学 > 2013年第19卷

	Gd0.2Ce0.8O2包覆LaNi0.6Fe0.4O3-delta阴极制备及性能; Fabrication and Performance of LaNi0.6Fe0.4O3-delta Cathode Modified by Coating with Gd0.2Ce0.8O2 for Intermediate Temperature Solid Oxide Fuel Cell
	Ren RX(任睿轩) ; Huang B(黄波) ; Zhu XJ(朱新坚) ; Hu YX(胡一星) ; Ding XY(丁小益) ; Liu ZY(刘宗尧) ; Liu YB(刘烨彬) ; REN Rui-Xuan ; HUANG Bo ; ZHU Xin-Jian ; HU Yi-Xing ; DING Xiao-Yi ; LIU Zong-Yao ; LIU Ye-Bin
刊名	http://electrochem.xmu.edu.cn/CN/abstract/abstract9973.shtml
	2013-06-28
关键词	固体氧化物燃料电池\|LaNi0.6Fe0.4O3-&delta 阴极\|Gd0.2Ce0.8O2包覆\|极化电阻\|交流阻抗 solid oxide fuel cell\|LaNi0.6Fe0.4O3-&delta cathode\|Gd0.2Ce0.8O2 coating\|polarization resistance\|electrochemical impedance spectroscopy
英文摘要	应用丝网印刷和共烧结制备LaNi0.6Fe0.4O3-δ/Sc0.1Zr0.9O1.95/LaNi0.6Fe0.4O3-δ对称电池. 以硝酸铈和硝酸钆为原料，柠檬酸作燃料，燃烧合成Gd0.2Ce0.8O2(GDC)包覆的LaNi0.6Fe0.4O3-δ(LNF)阴极. 实验表明，在750 oC工作温度下，纯LaNi0.6Fe0.4O3-δ阴极的极化电阻为0.70 Ω·cm2，而21.3%(by mass，下同，如无特殊标注均为质量分数)GDC包覆的LNF-GDC复合阴极的极化电阻最小(0.13 Ω·cm2)，同时活化能最小(136.80 kJ·mol-1)，故其阴极性能最佳. GDC的包覆加速了气体/阴极/电解质三相界面反应区的扩散过程，降低了阴极极化电阻.; The symmetric cell of LaNi0.6Fe0.4O3-δ/Sc0.1Zr0.9O1.95/LaNi0.6Fe0.4O 3-δ was fabricated with screen printing method. A LaNi0.6Fe0.4O3-δ (LNF) cathode was modified by coating with nano-sized gadolinium-doped ceria (GDC, Gd0.2Ce0.8O2) prepared using a simple combustion process within the pores of the cathode. According to the electrochemical impedance spectra (EIS), the polarization resistance of the pure LNF was 0.70 W·cm2 at 750 ºC, while 0.13 W·cm2 for the 21.3% GDC (by mass)-coated LNF cathode at the same temperature, which was only 1/5 of that of the pure LNF cathode. The activation energy of the 21.3% GDC (by mass)-coated LNF cathode (136.80 kJ·mol-1) is the smallest among those of GDC-coated LNF cathodes with different contents of GDC. The 21.3% GDC (by mass)-coated LNF cathode showed the optimum performance. The results indicated that GDC coatings significantly affected electrocatalytic activity of the LNF cathodes towards O2 reduction reaction. The improved performance of GDC-coated LNF cathode was attributed to the extended triple-phase boundary (TPB) and enhanced ion conductivity of oxide.; 国家自然科学基金(No. 51201098)和教育部高等学校博士学科点专项科研基金(No. 20100073120055)资助; 作者联系地址：上海交通大学机械与动力工程学院，燃料电池研究所，上海 200240; Author's Address: Institute of Fuel Cell, School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240, China; 通讯作者E-mail：huangbo2k@hotmail.com
语种	中文
出版者	厦门大学《电化学》编辑部
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/58591]
专题	2013年第19卷
推荐引用方式 GB/T 7714	任睿轩,黄波,朱新坚,等. Gd0.2Ce0.8O2包覆LaNi0.6Fe0.4O3-delta阴极制备及性能, Fabrication and Performance of LaNi0.6Fe0.4O3-delta Cathode Modified by Coating with Gd0.2Ce0.8O2 for Intermediate Temperature Solid Oxide Fuel Cell[J]. http://electrochem.xmu.edu.cn/CN/abstract/abstract9973.shtml,2013.
APA	任睿轩.,黄波.,朱新坚.,胡一星.,丁小益.,...&LIU Ye-Bin.(2013).Gd0.2Ce0.8O2包覆LaNi0.6Fe0.4O3-δ阴极制备及性能.http://electrochem.xmu.edu.cn/CN/abstract/abstract9973.shtml.
MLA	任睿轩,et al."Gd0.2Ce0.8O2包覆LaNi0.6Fe0.4O3-δ阴极制备及性能".http://electrochem.xmu.edu.cn/CN/abstract/abstract9973.shtml (2013).