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

任睿轩; 黄波; 朱新坚; 胡一星; 丁小益; 刘宗尧; 刘烨彬

doi:10.61558/2993-074X.2960

电化学 >

2013 , Vol. 19 >Issue 3: 275 - 280

DOI: https://doi.org/10.61558/2993-074X.2960

研究论文

Gd_0.2Ce_0.8O₂包覆LaNi_0.6Fe_0.4O_3-δ阴极制备及性能

任睿轩 ,
黄波 ,
朱新坚 ,
胡一星 ,
丁小益 ,
刘宗尧 ,
刘烨彬

展开

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

收稿日期: 2012-04-24

修回日期: 2012-06-05

网络出版日期: 2013-06-28

基金资助

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

收起

Fabrication and Performance of LaNi_0.6Fe_0.4O_3-δCathode Modified by Coating with Gd_0.2Ce_0.8O₂ for Intermediate Temperature Solid Oxide Fuel Cell

REN Rui-Xuan ,
HUANG Bo ,
ZHU Xin-Jian ,
HU Yi-Xing ,
DING Xiao-Yi ,
LIU Zong-Yao ,
LIU Ye-Bin

Expand

Institute of Fuel Cell, School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240, China

Received date: 2012-04-24

Revised date: 2012-06-05

Online published: 2013-06-28

Fold

摘要

应用丝网印刷和共烧结制备LaNi_0.6Fe_0.4O_3-δ/Sc_0.1Zr_0.9O_1.95/LaNi_0.6Fe_0.4O_3-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Gd_0.2Ce_0.8O₂(GDC)包覆的LaNi_0.6Fe_0.4O_3-δ(LNF)阴极. 实验表明，在750 ^oC工作温度下，纯LaNi_0.6Fe_0.4O_3-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.

关键词：

固体氧化物燃料电池; LaNi_0.6Fe_0.4O_3-δ阴极; Gd_0.2Ce_0.8O₂包覆; 极化电阻; 交流阻抗

本文引用格式

任睿轩 , 黄波 , 朱新坚 , 胡一星 , 丁小益 , 刘宗尧 , 刘烨彬 . Gd_0.2Ce_0.8O₂包覆LaNi_0.6Fe_0.4O_3-δ阴极制备及性能[J]. 电化学, 2013 , 19(3) : 275 -280 . DOI: 10.61558/2993-074X.2960

Abstract

The symmetric cell of LaNi_0.6Fe_0.4O_3-δ/Sc_0.1Zr_0.9O_1.95/LaNi_0.6Fe_0.4O_3-δwas fabricated with screen printing method. A LaNi_0.6Fe_0.4O_3-δ(LNF) cathode was modified by coating with nano-sized gadolinium-doped ceria (GDC, Gd_0.2Ce_0.8O₂) 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.

Key words：

solid oxide fuel cell; LaNi_0.6Fe_0.4O_3-δcathode; Gd_0.2Ce_0.8O₂ coating; polarization resistance; electrochemical impedance spectroscopy

参考文献

[1] Lv S Q(吕世权), Long G H(龙国徽), Meng X W(孟祥伟), et al. Perovskite cathode for solid oxide fuel cells[J]. Chinese Journal of Power Source(电源技术), 2010, 34(7): 734-737.
[2] Guo Y B(郭友斌), Lu L H(陆丽华), Chu L(储凌), et al. Research Progress in perovskite-like cathode for intermediate temperature solid oxide fuel cells[J]. Bulletin of the Chinese Ceramic Society(硅酸盐通报), 2009, 28(5): 991-996.
[3] Wu L W(邬理伟), Zheng Y P(郑颖平), Sun Y M(孙岳明), et al. Research progress in composite cathode of SOFC[J]. Chinese Battery Industry(电池工业), 2010, 15(1): 53-56.
[4] Kadowaki T, Shiomitsu T, Marsuda E, et al. Applicability of heat resisting alloys to the separator of planar type solid oxide fuel cell. Solid State Ionics, 1993, 67(1/2): 65-69.[J]
[5] Yang Z, Weil K S, Paxton D M, et al. Selection and evaluation of heat-resistant alloys for SOFC interconnect applications[J]. Journal of the Electrochemical Society, 2003, 150(9): A1188-A1201.
[6] Horita T, Xiong Y, Kishimoto H, et al. Application of Fe-Cr alloys to solid oxide fuel cells for cost-reduction: Oxidation behavior of alloys in methane fuel Journal of Power Sources, 2004, 131(1/2): 293-298.[J].
[7] Tucker M C, Kurokawa H, Jacobson C P, et al. A fundamental study of chromium deposition on solid oxide fuel cell cathode materials Journal of Power Sources, 2006, 160(1): 130-138.[J].
[8] Konysheva E, Penkalla H, Wessel E, et al. Chromium poisoning of perovskite cathodes by the ODS alloy Cr5Fe1Y₂O₃ and the high chromium ferritic steel Crofer22APU[J]. Journal of the Electrochemical Society, 2006, 153(4): A765-A773.
[9] Yokokawa H, Horita T, Sakai N, et al. Thermodynamic considerations on Cr poisoning in SOFC cathodes. Solid State Ionics, 2006, 177(35/36): 3193-3198.[J]
[10] Liu D J, Almer J, Cruse T. Characterization of Cr poisoning in a solid oxide fuel cell cathode using a high energy X-ray microbeam[J]. Journal of the Electrochemical Society, 2010, 157(5): B744-B750.
[11] Horita T, Xiong Y P, Kishimoto H, et al. Chromium poisoning and degradation at (La,Sr)MnO₃ and (La,Sr)FeO₃ cathodes for solid oxide fuel cells[J]. Journal of the Electrochemical Society, 2010, 157(5): B614-B620.
[12] Chiba R, Yoshimura F, Sakurai Y. An investigation of LaNi_1-xFe_xO₃ as a cathode material for solid oxide fuel cells[J]. Solid State Ionics, 1999, 124(3/4): 281-288.
[13] Zhen Y D, Tok A I Y, Jiang S P, et al. La(Ni,Fe)O₃ as a cathode material with high tolerance to chromium poisoning for solid oxide fuel cells[J]. Journal of Power Sources, 2007, 170(1): 61-66.
[14] Orui H, Watanabe K, Chiba R, et al. Application of LaNi(Fe)O₃ as SOFC Cathode[J].Journal of the Electrochemical Society, 2004, 151(9): A1412-A1417.
[15] Bevilacqua M, Montini T, Tavagnacco C, et al. Preparation, characterization, and electrochemical properties of pure and composite LaNi_0.6Fe_0.4O₃-based cathodes for IT-SOFC[J]. Chemistry of Materials, 2007, 19: 5926-5936.
[16] Hashimoto S I, Kammer K, Larsen P H, et al. A study of Pr_0.7Sr_0.3Fe₁_{_}_xNi_xO₃_{_}_δ as a cathode material for SOFCs with intermediate operating temperature[J]. Solid State Ionics, 2005, 176:1013-1020.
[17] Stodolny M K, Boukamp B A, Blank D H A, et al. Impact of Cr-poisoning on the conductivity of LaNi_0.6Fe_0.4O₃[J]. Journal of Power Sources, 2011(22), 196: 9290-9298.
[18] Stodolny M K, Boukamp B A, Blank D H A, et al. Cr-poisoning of a LaNi_0.6Fe_0.4O₃ cathode under current load[J]. Journal of Power Sources, 2012, 209: 120-129.
[19] Jain S R, Adiga K C, Vemeker V R P. A new approach to thermochemical calculation of condensed fuel-oxidizer mixtures[J]. Combustion and Flame, 1981, 40(1): 71-76.
[20] Liu H(刘珩)，Huang B(黄波)，Zhu X J(朱新坚). Preparation and characterization of the LaNi_0.6Fe_0.4O₃_-_δ cathode for intermediate temperature solid oxide fuel cell[J]. Journal of Electrochemistry(电化学), 2011, 17(4): 421-426.
[21] Huang B, Ye X F, Wang S R, et al. Performance of Ni/ScSZ cermet anode modified by coating with Gd_0.2Ce_0.8O₂ for a SOFC running on methane fuel[J]. Journal of Power Sources, 2006, 162(2): 1172-1181.
[22] Zhou W, Ran R, Shao Z P, et al. Electrochemical performance of silver-modified Ba_0.5Sr_0.5Co_0.8Fe_0.2O₃_-_δcathodes prepared via electrodes deposition[J]. Electrochimica Acta, 2008, 53(13): 4370-4380.
[23] Adler S B. Limitations of charge-transfer models for mixed-conducting oxygen electrodes[J]. Solid State Ionics, 2000, 135: 603-612.
[24] Fu C J, Sun K N, Zhang N, et al. Electrochemical characteristics of LSCF-GDC composite cathodes for intermediate temperature SOFC[J]. Electrochimica Acta, 2007, 52(13): 4589-4594.
[25] Qiang F, Sun K N, Zhang N Q, et al. Characterization of electrical properties of GDC doped A-site deficient LSCF based composite cathode using impedance spectroscopy[J]. Journal of Power Sources, 2007, 168: 338-345.
[26] Jiang S P, Leng Y J, Chan S H, et al. Development of(La,Sr)MnO₃-based cathodes for intermediate temperature solid oxide fuel cells[J]. Electrochemical and Solid-State Letters, 2003, 6(4): A67-A70.
[27] Li J L, Wang S R, Wang Z R, et al. (La_0.74Bi_0.10Sr_0.16)MnO_3-_{δ-Ce_0.8Gd_0.2O_2-_{δ_{cathodes fabricated by ion-impregnating method for intermediate-temperature solid oxide fuel cells[J]. Journal of Power Sources, 2009, 188(2): 453-457.}}}

Options

文章导航

〈

〉

模态框（Modal）标题

摘要

本文引用格式

Abstract

参考文献