刘媛媛;安胜利;李舒婷;蔡长焜;

• 1:内蒙古科技大学材料与冶金学院

• 2:内蒙古科技大学化学与化工学院

• 3:内蒙古科技大学内蒙古先进陶瓷与器件重点实验室

•  

摘要(Abstract)：

利用溶胶凝胶合成法制备了Ce_(0.8)Gd_(0.2)O_(1.9)(GDC)电解质,并利用XRD,SEM对GDC粉体和电解质基片进行了物相表征.运用Hebb-Wagner极化法组装离子阻塞电极,考察GDC电解质在空气气氛下450～750℃的电子电导率.实验结果表明,GDC呈立方萤石结构,电解质片表面与断面致密.同时,测定出的GDC电子电导率在750℃时为5.698×10~(-5) S/cm,在450～750℃下电子电导率与温度呈良好的线性关系.

关键词(KeyWords)： 溶胶-凝胶法;Gd_2O_3掺杂CeO_2;固体电解质;Hebb-Wagner极化法

基金项目(Foundation): 国家自然科学基金资助项目(51474133);; 内蒙古自治区自然科学基金资助项目(2017MS0221)

作者(Author): 刘媛媛;安胜利;李舒婷;蔡长焜;

Email:

DOI:

参考文献(References)：

• [1] GROVE W R.On voltaic series and the combination of gases by platinum[J].The London,Edinburgh,and Dublin Philosophical Magazine and Journal of Science,1839,14(86-87):127.

• [2] MOND L,LANGER C V.A new form of gas battery[J].Proceedings of the Royal Society of London,1890,46(280-285):296.

• [3] KORDESCH K V,SIMADER G R.Environmental impact of fuel cell technology[J].Chemical Reviews,1995,95(1):191.

• [4] GRILO J P,MACEDO D A,NASCIMENTO R M,et al.Perfomance of GDC with alkali metal carbonates as sintering aids[J].Solid State Ionics,2020,346:115.

• [5] STEELE B C H.Material science and engineering:the enabling technology for the commercialisation of fuel cell systems[J].Journal of Materials Science,2001,36(5):1053.

• [6] 毛宗强,黄建兵,王诚,等.低温固体氧化物燃料电池研究进展[J].电源技术,2008(2):75.

• [7] KIM K,LEE T,JOO M,et al .Voltage behavior of Hebb-Wagner ion-blocking cell through compound (Bi1.46Y0.54O3) decomposition and decomposition kinetics [J].Solid State Ionics,2014,267:9.

• [8] GRILO J P,MACEDO D A,NASCIMENTOR M,et al.Electronic conductivity in Gd-doped ceria with salt additions[J].Electrochimica Acta,2019,318:977.

• [9] KYUNG R L,JONG H L,HAN I Y.Reassessment of conventional polarization technique to measure partial electronic conductivity of electrolytes[J].Solid State Ionics,2010,181:724.

• [10] NATSUKO S,KTSUHIKO Y,TERUHISA H,et al.Effect of water vapour on oxygen exchange kinetics of ceria and zirconia solid electrolytes[J].Phys Chem Chem Phys,2003,5:2253.