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采用固相反应法合成了(Pr1-xNdx)0.6Sr0.4Co0.8Fe0.2O3-δ(x=0.2、0.4、0.6、0.8)钙钛矿氧化物系样品,采用XRD分析物相结构,采用XPS分析化学状态,用电导弛豫法研究了(Pr1-xNdx)0.6Sr0.4Co0.8Fe0.2O3-δ系样品的氧化学扩散性能.实验结果表明,(Pr1-xNdx)0.6Sr0.4Co0.8Fe0.2O3-δ体系样品的氧化学扩散系数D(chem)随温度的升高、Nd含量的增加而上升,电导率随氧分压的增大而增大;样品(Pr0.2Nd0.8)0.6Sr0.4Co0.8Fe0.2O3-δ氧扩散系数最大,在800℃时达到6.75×10-5cm2/s;样品(Pr0.2Nd0.8)0.6Sr0.4Co0.8Fe0.2O3-δ在600℃下氧分压为1.0×105Pa时电导率达到最大值为1318.138S/cm,是比较理想的固体氧化物燃料电池的阴极材料.

参考文献

[1] Ding Tiezhu;Li Jian;Qi Qige;Ji Binghuo;Liu Jian;Zhang Changzai .XPS Studies on Rare Earth Oxide LSCO/YSZ Electrodes[J].Journal of Rare Earths,2003(4):453-457.
[2] Ding T Z;Wang Y M;Shi S H .[J].Journal of Materials Science Letters,2003,22(01):1.
[3] Bouwmeester H J M;Den Otter M W;Boukamp B A .[J].Solid State Electrochemistry,2004,8:599.
[4] Atkinson A.;Rudkin R.;Chater RJ. .Oxygen diffusion and surface exchange in La0.8Sr0.2Fe0.8Cr0.2O3-delta under reducing conditions[J].Solid state ionics,2001(3/4):233-240.
[5] Lane J.A.;Waller D.;Kilner J.A.;Benson S.J. .Oxygen transport in La_(0.6)Sr_(0.4)Co_(0.2)Fe_(0.8) O_(3-δ)[J].Solid state ionics,1999(1/4):201-208.
[6] Tenelshof JE.;Bouwmeester HJM.;Lankhorst MHR. .CHEMICAL DIFFUSION AND OXYGEN EXCHANGE OF LA0.6SR0.4CO0.6FE0.4O3-DELTA[J].Solid state ionics,1997(1/2):15-22.
[7] Wen T L;Tu H;Xu Z et al.[J].Solid-State Ionicis,1999,121:25.
[8] Liu Mingfei;Dong Dehua;Chen Lei et al.[J].Journal of Power Sources,2008,176:107.
[9] Tu H Y;Takeda Y;Imanishi N .[J].Solid-State Ionicis,1999,117(3-4):227.
[10] 范文亮,丁铁柱,潮洛蒙,张磊,闫祯,王晓波.A位置复合掺杂对钙钛矿氧化物(La1-xPrx)2/3 Sr1/3 Co0.8 Ni0.2 O3化学扩散系数的影响[J].功能材料,2009(04):570-573,577.
[11] 潮洛蒙;丁铁柱;范文亮 等.[J].稀有金属材料与工程,2009,30(03):253.
[12] Bucher E.;Benisek A.;Sitte W.;Preis W.;Rom I.;Hofer F.;Jantscher W. .Transport properties of La0.4Sr0.6CoO3-delta[J].Solid state ionics,2001(Special Issue SI):375-380.
[13] Yasuda I;Hishinuma M .[J].Journal of Solid State Chemistry,1995,115:152.
[14] Yasuda I.;Hishinuma M. .ELECTRICAL CONDUCTIVITY AND CHEMICAL DIFFUSION COEFFICIENT OF SR-DOPED LANTHANUM CHROMITES[J].Solid state ionics,1995(1/2):141-150.
[15] Ramos T;Atkinson A .Oxygen diffusion and surface exchange in La1-xSrxFe0.8Cr0.2O3-delta (x=0.2, 0.4 and 0.6)[J].Solid state ionics,2004(3/4):275-286.
[16] Wang S.;Yang YL.;Jacobson AJ.;Abeles B.;Verma A. .The effect of the magnitude of the oxygen partial pressure change in electrical conductivity relaxation measurements: oxygen transport kinetics in La0.5Sr0.5CoO3-delta[J].Solid state ionics,2001(1/2):125-133.
[17] Lane JA.;Kilner JA. .Measuring oxygen diffusion and oxygen surface exchange by conductivity relaxation[J].Solid state ionics,2000(Special Issue SI):997-1001.
[18] Preis W;Bucher E;Sitte W .[J].Solid-State Ionicis,2004,175:393.
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