采用EDTA-柠檬酸联合络合法制备了(Ce0.8Y0.2-xNdxO1.9)0.99(ZnO)0.01(0≤x≤0.2)系列电解质试样.通过热重、X射线衍射、扫描电镜、热膨胀测试和交流阻抗谱等方法对试样进行分析,着重研究了Y/Nd掺杂配比对CeO2基电解质材料电性能的影响.结果表明:采用EDTA-柠檬酸联合络合法制备的试样均为单一的立方萤石型结构;添加1mol％的ZnO,在1350℃下能得到较为致密的(Ce0.8Y0.2-xNdxO1.9)0.99(ZnO )0.01系列电解质陶瓷片,其中(Ce0.8Y0.05Nd0.15O1.9)0.99(ZnO)0.01电解质试样表现出最高的离子电导率,其在750℃测试时的离子电导率为58.79 mS/cm;所有试样的热膨胀系数在(11.83～12.30)× 10-6/K之间.
参考文献
| [1] | George R A.Status of tubular SOFC field unit demonstrations,Journal of Power Sources,2000,86(1/2):134-139. |
| [2] | Hibino T,Hashimoto A,Inoue T,et al.A low operating temperature solid oxide fuel cell in hydrocarbon-air mixtures.Science,2000,288(5473):2031-2033. |
| [3] | Ralph J M,Schoeler A C,Krumpelt M.Materials for lower temperature solid oxide fuel cells.Journal of Materials Science,2001,36(5):1161-1172. |
| [4] | Gao L,Zhou M,Zheng Y F,et al.Effect of zinc oxide on yttria doped ceria. Journal of Power Sources, 2010, 195(10):3130-3134. |
| [5] | Steele B C H.Materical science and engineering:the enabling technology for the comercialisation of fuel cell systems.Journal of Materials Science,2001,36(5):1053-1068. |
| [6] | Zhu B.Advantage of intermediate temperature solid oxide fuel cells for tractionary applications.Journal of Power Sources,2002,93(1/2):82-86. |
| [7] | Steele B C H.Appraisal of Ce1-yGdyO2-y/2 electrolytes for IT-SOFC operation at 500℃,Solid State Ionics,2000,129(1-4):95-110. |
| [8] | Masashi Mori,Eisaku Suda,Bernard Pacaud,et al.Effect of components in electrodes on sintering characteristics of Ce0.9Gd0.1O1.95 electrolyte in intermediate-temperature solid oxide fuel cells during fabrication.Journal of Power Sources,2006,157(2):688-694. |
| [9] | Mogensen M,Sarnmes N M,Tompsett G A.Physical,chemical and electrochemical properties of pure and doped ceria.Solid State Ionics,2000,129(1-4):63-94. |
| [10] | Tadokoro S K,Muccillo E N S.Influence of the precursor purity and the precipitating agent on impedance spectroscopy of CeO2:Y2O3 ceramics.Journal of Alloys and Compounds,2004,374(1/2):190-193. |
| [11] | Zha S W,Xia C R,Meng G Y.Effect of Gd (Sm) doping on properties of ceria electrolyte for solid oxide fuel cells.Journal of Power Sources,2003,115(1):44-48. |
| [12] | Yamamura H,Katoh E,Ichikawa M,et al.Multiple doping effect on the electrical conductivity in the (Ce1-x-yLaxMy)O2-δ (M =Ca,Sr)system.Electrochemistry,2000,68(6):455-459. |
| [13] | Wang F Y,Wan B Z,Cheng S.Study on Gd3+ and Sm3+co-doped ceria-based electrolytes.Journal of Solid State Electrochemistry,2005,9(3):168-173. |
| [14] | Chung D Y,Lee E H.Microwave-induced combustion synthesis of Ce1-xSmxO2-x/2 powder and its characterization.Journal of Alloys and Compounds,2004,374(1/2):69-73. |
| [15] | Zhang T S,Ma J,Kong L B,et al.Sinterability and ionic conductivity of coprecipitated Ce0.8Gd0.2O2-δ powders treated via a high-energy bail-milling process.Journal of Power Sources,2003,124(1):26-33. |
| [16] | Zhang X,Decès P C,Yick S,et al.A study on sintering aids for Sm0.2Ce0.8O1.9 electrolyte.Journal of Power Sources,2006,162(1):480-485. |
| [17] | Zhang T S,Ma J,Kong L B,et al.Iron oxide as an effective sintering aid and a grain boundary scavenger for ceria-based electrolytes.Solid State Ionics,2004,167(1/2):203-207. |
| [18] | Li S J,Ge L,Gu H T,et al.Sinterability and electrical properties of ZnO-doping Ce0.8Y0.2O1.9 electrolytes prepared by EDTA-citrate complexing method.Journal of Alloys and Compounds,2011,509(1):94-98. |
| [19] | Ge L,Li S J,Yi F Z,et al.Effect of zinc oxide doping on the grain boundary conductivity of Ce0.8Ln0.2O1.9 ceramics (Ln=Y,Sm,Gd).Journal of Power Sources,2011,196(15):6131-6137. |
| [20] | Shao Z P,Haile S M.A high-performance cathode for the next generation of solid-oxide fuel cells.Nature,2004,431(9):170-173. |
| [21] | Shao Z P,Wang W S,Cong Y,et al.Investigation of the permeation behavior and stability of a Ba0.5Sr0.5Co0.8Fe0.2O3-δ oxygen membrane.Journal of Membrane Science,2000,172(1/2):177-188. |
| [22] | Ding X F,Liu Y J,Gao L,et al.Synthesis and characterization of doped LaCrO3 perpared by EDTA-citrate complexing method.Journal of Alloys and Compounds,2008,458(1/2):346-350. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%