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微乳液和碳吸附耦合法制备氧化钐、氧化钆掺杂氧化铈纳米粉体及其电性能的研究 被引量:3

Preparation and Electric Properties of Nanometer Sized(Sm_2O_3)_(0.08)(Gd_2O_3)_(0.02)(CeO_2)_(0.8) Particles by the Coupling Route of Reverse Micelles with Carbon Absorption
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摘要 用微乳液和碳吸附耦合法制备了氧化钐、氧化钆二元稀土掺杂氧化铈纳米粉体(Sm2O3)0.08(G d2O3)0.02(C eO2-δ)0.8。探讨了碳黑的加入量对粉体表面积的影响,得到最佳的碳黑加入量。利用XRD、TEM和BET方法对其物相、分散性、颗粒形貌和比表面积等性能进行了表征。结果表明:700℃焙烧的粉体呈现良好的结晶状态,为立方萤石结构,比表面积为65m2/g,平均颗粒直径为12nm,分散良好。利用交流阻抗法测试了材料的电导率。结果表明,电导率随烧结温度的升高而增大。 The Sm2O3,Gd2O3 doped CeO2 nano-powders (Sm2O3)0.08(Gd2O3)0.02 (CeO2-δ)0.8 were synthesized by a reverse micelles and carbon absorption method. The addition of carbon showed a great influence on of the nano- powders. The optimum content of carbon was found. The phase, particle size and specific surface area of the (Sm2 O3 )0. 08 (Gd2O3)0. 02 (CeO2-δ)0. spowders were characterized by XRD, TEM and BET. The results show that (Sm2O3)0.08 (Gd2O3)0.02(CeO2-δ)0.8 powders calcinated at 700℃ have a cubic fluorite structure,the surface areas of 65m^2/g,an average size of 12 nm and a high dispersion behavior. The ionic conductivity of (Sm2O3)0.08(Gd2O3)0.02(CeO2-δ)08 electrolytes was measured by the a. c impedance spectroscopy technique. The effect of sintering temperature on the ionic conductivity was studied. The ionic conductivity increases with the increase of the sintering temperature.
出处 《稀土》 EI CAS CSCD 北大核心 2006年第3期35-38,共4页 Chinese Rare Earths
基金 内蒙古科技厅攻关计划项目(20010808) 教育部人才基金项目
关键词 氧化铈 纳米粉体 固体电解质 电导率 碳吸附 ceria nano - powders solid electrolyte electronic conductivity carbon absorption
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参考文献11

  • 1Christopher M,Sivaraman G.Properties and performance of cation-doped ceria electrolyte material in solid oxide fuel cell application[J].J Am Ceram Soc,2002,85(10):2479-2486.
  • 2罗绍华,唐子龙,尧巍华,张中太,李杰,闫俊萍.低温燃烧合成钛酸钡及其陶瓷介电性能研究[J].硅酸盐学报,2003,31(6):560-565. 被引量:41
  • 3Inaba H,Tagawa H.Ceria-based solid electrolyte[J].Solid State Ionics,1996,83:1-16.
  • 4Steele B C H.Appraisal of Ce1-yGdyO1-y/2 electrolyte for IT-SOFC operation at 500℃[J].Solid State Ionics,2000,129:95-110.
  • 5Yahiro H,Eguchi K,Arai H.Electrical properties and reducibilities of ceria-rare earth oxide system and their application to solid oxide fuel cell[J].Solid State Ionics,1989,36:71.
  • 6贺拥军 杨伯伦.微乳液和均匀沉淀耦合法制备CeO2纳米粒子.化学通报,2003,(2):120-124.
  • 7范雄.金属X衍射学(第2版)[M].北京:机械工业出版社,1998.
  • 8PaulCHiemenz.胶体与表面化学原理[M].北京:北京大学出版社,1986..
  • 9Kim D J.Lattice parameters,ionic conductivities and solubility limits in fluorite-structure MO2 oxide (M=Hf4+,Zr4+,Ce4+,Th4+,U4+) solid solution[J].J Am Ceram Soc,1989,72(8):1415-1421.
  • 10李英,谢裕生,龚江宏,唐子龙,张中太.制备工艺对(ZrO_2)_(0.90)(Y_2O_3)_(0.04)(CaO)_(0.06)电解质材料电性能的影响[J].电源技术,2001,25(5):330-332. 被引量:1

二级参考文献32

  • 1张密林,周铭,景晓燕,辛艳凤.柠檬酸法合成高性能BaFe_12O_19超微粉[J].硅酸盐通报,1996,15(4):22-25. 被引量:13
  • 2MASAKI T. Mechanical properties of Y2O3-stabillzed tetragonal ZrO2 polycrystals after aging at high temperature[J]. J Am Ceram Soc, 1986, 69(7): 519-522.
  • 3GIBSON I R, DRANSFIELD G P, IRVIN J T S. Sinterability of commercial 8 mool% yttria-stabillzed zirconia powders and the effect of sintered density on the ionic conductivity [J]. J Mater Scl, 1998, 33(17): 4 297-4 305.
  • 4BADWAL S P S, RAJENDRAN S. Effect of micro- and nanostructure on the properties of ionic conductors [ J ]. Solid State Ionics, 1994, 70-71: 83-95.
  • 5MACKRODT W C, WOODROW P M. Theoretical estimates of point defect energies in cubic zirconia[J]. J Am Ceram Soc,1986, 69(3) : 277-280.
  • 6PHAM A Q, GLASS R S. Oxygen pumping characteristics of yttria-tabilized-zirconia[J]. Electrochimica Acta,1998, 43(18): 2 699-2 708.
  • 7CIACCHI F T, CRANE K M, BADWAL S P S. Evaluation of commercial zirconia powders for solid oxide fuel cells [J ]. Solid State Ionics, 1994, 73: 49-61.
  • 8SUBBARO E C, MAITI H S. Solid electrolytes with oxygen ion conduction [J]. Solid State Ionics, 1984, 11(4) : 317-338.
  • 9NAKAMURA A, WAGNER Jr J B. Defect structure, ionic conductivlty, and diffusion in yttria stabilized zirconia and related oxide electrolytes with fluorite structure [J]. J Electrochem Soc, 1986, 133(8): 1 542-1 548.
  • 10BADWAL S P S, DRENNAN J. Grain boundary resistivity in Y - TZP materials as a function of thermal history [J]. J Mater Sci, 1989, 24: 88-96.

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