本实验利用聚乙烯醇(PVA)为聚合剂进行了氧化铋掺杂氧化铈氧离子导电体合成与导电性研究.通过粉末X射线衍射对合成材料进行了相分析,并利用交流阻抗方法测试,分析了试样的导电性.研究结果表明,通过PVA的聚合作用能在较低温度下(500℃)有效地合成出高纯的氧化铈纳米晶固溶体;氧化铋掺杂量在5%-15%(摩尔含量)范围内时,氧化铈的氧离子导电性随掺杂量的增加而增大;选用适当的烧结升温/降温速度能获得晶粒小于100nm的块体材料,并能有效地提高材料的导电性.
参考文献
| [1] | N.Miura;H,Kurosawa;M.Hasei;G.Lu,W Yamazoe .Stabilized zircOnia-hased sensor using oxide electrode fordetection of NOx in high-temperature combustion-exhausts[J].Soilid State Ionics,1996,86-88:1069-1073. |
| [2] | M.Stoukides;C.G.Vayenes .The effect of electrochemicaloxygen pumping on the rate and selectivity of ethyleneoxidation on polycrystalline silver[J].Journal of Catalysis,1981,70:137-146. |
| [3] | W.Huang;P.Shuk .Structural and Electrical Characterization of a Novel Mixed Conductor: CeO_2-Sm_2O_3-ZrO_2 Solid Solution[J].Journal of the Electrochemical Society,2000(11):4196-4202. |
| [4] | H.Inaba;H.Tagawa .Celia-base solid electrolytes[J].Solid-State Ionicis,1996,83:1-16. |
| [5] | S.W,Zha;C.R.Xia;G.G.Meng .Effect of Gd (Sm)doping on properties of ceria electrolyte for solid oxide fuelcells[J].Journal of Power Sources,2003,115:44-48. |
| [6] | 谢朝晖,朱庆山,姚生永,黄文来.不同碳酸铵试剂对共沉淀法制备的GDC粉性状的影响[J].无机化学学报,2006(05):935-940. |
| [7] | 谢德明,童少平,冯海.固体氧化物燃料电池的制备[J].硅酸盐学报,2005(10):1287-1291. |
| [8] | 宋希文,王哲峰,赵永旺,赵文广,安胜利.Sm2O3掺杂CeO2纳米粉体的烧结动力学[J].中国稀土学报,2004(03):345-348. |
| [9] | T.Moil;Y.Wang;J.Drennan;G.Auchterlonie,J.G.Li,T.Ikegami .Influence of particle mophology onnanstructural feature and conducting property in Sin-dopedCeO2 sintered body[J].Solid-State Ionicis,2004,175:641-649. |
| [10] | T.Mori;T.Ikegami;H.Yamamura .Application of aCrystallographic Index for Improvement of the ElectrolyticProperties of the CeO2-Sm2O2 System[J].Journal of the Electrochemical Society,1999,146:4380-4385. |
| [11] | F.Y.Wang;S.Chen;S.Cheng .Gd3+ and Sm3+ co-dopedceria electrolytes for intermediate temperature solid oxidefuel cells[J].Electrocherm Commun,2004,6:743-746. |
| [12] | Li GS.;Feng SH.;Wang MQ.;Zhang LY.;Yao X.;Li LP. .An effective synthetic route for a novel electrolyte: Nanocrystalline solid solutions of (CeO2)(1-x)(BiO1.5)(x)[J].Advanced Materials,1999(2):146-149. |
| [13] | X.L.Chen;W.Eysel .The Stabilization of a-Bi2O3 byCeO2[J].Journal of Solid State Chemistry,1996,127:128-130. |
| [14] | Z.C.Li;H.Zhang;B.Bergman;X.D.Zou .Synthesisand Characterization of IT-electrolyte of La0.85 Sr0.15 Ga0.85Mg0.15O3-a by Steric Entrapment Synthesis Method[J].Journal of the European Ceramic Society,2006,26:2357-2364. |
| [15] | R.Polini;A.Pamio;E.Traversa .Effect of synthesis routeon sinteilng behavior,phase purity and conductivity of Sr-and Mg-doped LaGaO3 perovskites[J].Journal of the European Ceramic Society,2004,24:1365-1370. |
| [16] | S.Zha;C.Xia;X.Fang;H.Wang,D.Peng,G.Meng .Processing and electrical properties of doped-LaGaO3 bygelcasting[J].Ceramics International,2001,27:649-654. |
| [17] | W.M.Kriven;S.J.Lee;M.A.Gulgun;M.H.Nguyen,D.K.Kim .Synthesis of oxide powder viapolymeric steric entrapment,in innovative processing/synthesis:ceramics,glasses,composites Ⅲ[J].Ceram Trans,2000,108:99-110. |
| [18] | Web Elements periodic table[OL].http://www.webelements.com |
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