利用柠檬酸做还原剂,硝酸盐做氧化剂,采用低温燃烧合成工艺制备纳米尺寸的Ce08Y0.2O1.9电解质粉体,用XRD、IR、TEM和SEM研究产物的微观结构和烧结性能.XRD、TEM和IR光谱研究表明利用低温燃烧合成工艺直接获得了单一的纳米Ce0.8Y02O1.9固溶体,SEM分析表明电解质粉体具有很好的烧结活性.利用交流阻抗谱在400～800℃温度范围内测量了电解质的电化学性能,结果表明,800℃时氧离子电导率为0.058 S/cm,活化能为0.73 eV.采用低温燃烧合成工艺有利于降低电解质的烧结温度,改善电解质的性能.
参考文献
| [1] | Chan SH.;Chen XJ.;Khor KA. .A simple bilayer electrolyte model for solid oxide fuel cells[J].Solid state ionics,2003(1/2):29-43. |
| [2] | Boulc'h F.;Djurado E. .Structural changes of rare-earth-doped, nanostructured zirconia solid solution[J].Solid state ionics,2003(1/4):335-340. |
| [3] | K.Huang;J.B.Goodenough .A solid oxide fuel cell based on Sr- and Mg-doped LaGaO_3 electrolyte: the role of a rare-earth oxide buffer[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2000(0):454-464. |
| [4] | Fonseca FC;Muccillo R .Impedance spectroscopy analysis of percolation in (yttria-stabilized zirconia)-yttria ceramic composites[J].Solid state ionics,2004(1/2):157-165. |
| [5] | Zhang TS;Ma J;Kong LB;Chan SH;Kilner JA .Aging behavior and ionic conductivity of ceria-based ceramics: a comparative study[J].Solid state ionics,2004(3/4):209-217. |
| [6] | Matsui T;Minoru I;Mineshige A;Ogumi Z .Electrochemical properties of ceria-based oxides for use in intermediate-temperature SOFCs[J].Solid state ionics,2005(7/8):647-654. |
| [7] | WANG Feng-Yun;CHEN Song-ying;WANG Qin et al.Study on Gd and Mg co-doped ceria electrolyte for intermediate temperature solid oxide fuel cells[J].Catalysis Today,2004,97:189-194. |
| [8] | Panhans M A;Blumenthal R N .A thermodynamic and electrical conductivity study of nonstoichiometric cerium dioxide[J].Solid State Ionics,1993,60(04):279-298. |
| [9] | Zhen Y S;Milne S J;Brook R J .Oxygen ion conduction in CeO2 ceramics simultaneously doped with Gd2O3 and Y2O3[J].Science of Ceramics,1988,14:1025-1030. |
| [10] | Godickemeier M;Gauckler L J .Engineer of solid oxide fuel cells with ceria-based electrolytes[J].Journal of the Electrochemical Society,1998,145(02):414-420. |
| [11] | Dikmen S;Shuk P;Greenblatt M et al.Hydrothermal synthesis and properties of Ce1-x GdxO2-δ solid solutions[J].Solid State Sciences,2002,4:585-590. |
| [12] | S.K. Tadokoro;T.C. Porfirio;R. Muccillo;E.N.S. Muccillo .Synthesis, sintering and impedance spectroscopy of 8 mol% yttria-doped ceria solid electrolyte[J].Journal of Power Sources,2004(1/2):15-21. |
| [13] | S.K. Tadokoro;T.C. Porfirio;R. Muccillo;E.N.S. Muccillo .Synthesis, sintering and impedance spectroscopy of 8 mol% yttria-doped ceria solid electrolyte[J].Journal of Power Sources,2004(1/2):15-21. |
| [14] | Zhang TS;Ma J;Kong LB;Hing P;Kilner JA .Preparation and mechanical properties of dense Ce0.8W0.2O2-delta ceramics[J].Solid state ionics,2004(1/2):191-196. |
| [15] | WANG Feng-yun;CHEN Song-ying;Cheng Soofin .Ga3+ and Sm3+ co-doped ceria based electrolytes for intermediate temperature solid oxide fuel cells[J].Electrochemistry Communications,2004,6:743-746. |
| [16] | Tsoga A.;Stover D.;Naoumidis A. .Total electrical conductivity and defect structure of ZrO2-CeO2-Y2O3-Gd2O3 solid solutions[J].Solid state ionics,2000(1/4):403-409. |
| [17] | TIAN Chun-yan;CHAN Siu-wai .Ionic conductivities,sintering temperatures and microstructures of bulk ceramic CeO2 doped with Y2O3[J].Solid State Ionics,2000,134:809-102. |
| [18] | Shaowu Zha;Qingxi Fu;Yin Lang .Novel azeotropic distillation process for synthesizing nanoscale powders of yttria doped ceria electrolyte[J].Materials Letters,2001(6):351-355. |
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%