EIS测定Ce_(0.8)Gd_(0.2)O_(1.9)电导率的等效电路分析  

Analysis on equivalent circuit of Ce_(0.8)Gd_(0.2)O_(1.9) film

作　　者：谢德明[1] 童少平[2] 邵海波[3] 

机构地区：[1]浙江工业大学机械制造及自动化教育部重点实验室,浙江杭州310032 [2]浙江工业大学化材学院,浙江杭州310032 [3]浙江大学化学系,浙江杭州310027

出　　处：《电源技术》2006年第12期993-996,共4页Chinese Journal of Power Sources

摘　　要：测量了采用柠檬酸-硝酸盐燃烧合成制备的固体氧化物燃料电池电解质Ce0.8Gd0.2O1.9(CGO)的电化学阻抗谱(EIS),结果表明,阻抗谱与测试温度有关。提出了阻抗谱的等效电路,并对不同测试温度下CGO的阻抗谱进行了分析。CGO的电导率ln(бT)与1/T近似呈线性关系。800℃时CGO电解质的氧离子电导率为0.044S·m-1。The electrolyte Ce0.8Gd0.2O1.9（CGO） for solid oxide fuel cell was prepared by combustion synthesis method of citric acid-nitrate, The complex impedance of CGO film was measured, The results show that the complex impedance spectroscopy is relevant to test temperature. The equivalent circuit model of the CGO film was recommended, and the complex impedance spectroscopy of the CGO film was analyzed at different test temperatures, The relationship between electrical conductivity and temperature was found and that was conformed to Arrhenius law. The conductivity of CGO pellet reaches to 0. 044 S· m^-1 at 800℃.

关 键 词：CEO2 电解质 阻抗谱 等效电路 

分 类 号：TM911.4[电气工程—电力电子与电力传动]