CAJ | 학술논문

用柠檬酸络合法制备超细的钙钛矿型结构的固体氧化物燃料电池阴极材料La_(0.7)Sr_(0.2)Co_(0.1)CuO_(3-σ)(LSCC).选用合适的反应条件和煅烧温度制得所需要的材料后,用DSC-TG、XRD、SEM等对粉体进行物相测定和形貌观察;选用不同温度煅烧前驱体,得到不同比表面积的粉体材料,通过半干法工艺成型LSCC阴极材料并测试它在不同温度条件下的电性能.结果表明,溶胶凝胶-高温自燃烧法能制备出超细纯相的LSCC阴极材料,且该阴极材料在中温条件下使用具有良好的导电性能(不低于150 S/cm)和输出功率(0.85 W/cm~2)和较低的活化能(112.1 kJ/mol).
용저몽산락합법제비초세적개태광형결구적고체양화물연료전지음겁재료La_(0.7)Sr_(0.2)Co_(0.1)CuO_(3-σ)(LSCC).선용합괄적반응조건화단소온도제득소수요적재료후,용DSC-TG、XRD、SEM등대분체진행물상측정화형모관찰;선용불동온도단소전구체,득도불동비표면적적분체재료,통과반간법공예성형LSCC음겁재료병측시타재불동온도조건하적전성능.결과표명,용효응효-고온자연소법능제비출초세순상적LSCC음겁재료,차해음겁재료재중온조건하사용구유량호적도전성능(불저우150 S/cm)화수출공솔(0.85 W/cm~2)화교저적활화능(112.1 kJ/mol).
Perovskite-type ultrafine La_(0.7)Sr_(0.2)Co_(0.1)CuO_(3-σ) powders used as cathode materials for intermediate temperature solid oxide fuel cell (IT-SOFC) were directly synthesized by a citrate process and the microstructure was observed with scanning electron microscopy (SEM) and analyzed by DSC-TG、XRD. Baking the precursor at different temperature in order to get the powder with different specific surface area. Using semi-dry method to sharp the LSCC and test electrical conductivity in intermediate temperature. The results indicate that high purity ultrafine LSCC powder can be synthesis by citrate process and self-combusting method and it shows good electrical conductivity(more than 150 S/cm), output power(0.85 W/cm~2 and activation energy(112.1 kJ/mol)in suitably temperature.