摻雜氧化鈰基電解質(zhì)的制備和性能研究.pdf

1、內(nèi)蒙古科技大學(xué)碩士學(xué)位論文摻雜氧化鈰基電解質(zhì)的制備和性能研究姓名：馬良申請學(xué)位級別：碩士專業(yè)：鋼鐵冶金指導(dǎo)教師：安勝利宋希文20090606內(nèi)蒙古科技大學(xué)碩士學(xué)位論文AbstractDopedceriabased(Sm02Ceo8O19，SDC)solidelectrolyteWaspreparedbylowtemperaturecombustionmethodThesynthesistechnologyandtheelectrical

2、conductivityoftheelectrolytewerestudiedTheeffectofbismuthoxidecontent(05；1；2；3；4；5吼％)onthesinteringcharacteristicsandelectrochemicalpropertyofSDC(Sm02Ceo8019)wasinvestigatedThepretreatmenttemperatureofBi—SDCat800。Candsin

3、teringtemperatureat1250。CweredeterminedfromthethermalexpansioncurvesThephasestructureWasanalyzedbytheXraydiffraction(XRD)ThecubicfluoritestructureandnonewphasewherefoundafterdopingbismuthoxideACconductivitywasmeasuredonb

4、ulkmaterialsandtheconductivityofSDCdopingbismuthoxidebelow5wt％WashigherthanthatofSDCsinteredat1600。CTheimpactontheelectrolyteconductivitywasmainlybyimprovingthegrainboundaryelectricalconductivitySm02xBixCel9(X=0005，01，01

5、5，02)weresynthesizedbylowtemperaturecombustionmethodTheelectricalpropertieswerestudiedBi3十hadanotablysignificanteffectonthegrainboundarieselectrolyteconductivitythangrain111eimpactontheelectrolyteconductivityismainlybyim

6、provingthegrain—boundaryconductivityAftertheadditionofBi”，thestructureofspace—chargelayerfortheelectrolyte，SOthattheactivationenergyofgrainboundaryconductivitydecreasedandgrainboundaryconductivityincreasedKeywords：solide