LaNi1-xCoxO3-δ (x=0.4 to 0.7) cathodes for solid oxide fuel cells by infiltration

39th International Microelectronics and Packaging IMAPS Poland 2015 Conference

无线电电子学

Chrzan, Aleksander^1 ; Ovtar, Simona^2 ; Chen, Ming^2

Faculty of Electronics, Telecommunications and Informatics, Gdansk University of Technology, Narutowicza 11/12, Gdansk

80-233, Poland^1

Department of Energy Conversion and Storage, Technical University of Denmark, Risø Campus, Frederiksborgvej 399, Roskilde

DK-4000, Denmark^2

关键词: After-heat treatment;    Electrochemical applications;    Electrochemical testing;    Polarization resistances;    Yttria-stabilized zirconias (YSZ);   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/104/1/012019/pdf
DOI  :  10.1088/1757-899X/104/1/012019

来源: IOP

【 摘 要 】

Performance of LaNi1-xCoxO3-δ(LNC) (x=0.4 to 0.7) as a cathode in solid oxide fuel cell (SOFC) is evaluated. Symmetrical cathode/electrolyte/cathode cells for electrochemical testing are prepared by infiltration of yttria stabilized zirconia (YSZ) backbone with LNC solutions. It is showed that the cathode infiltrated with LaNi0.5Co0.5O3-δ(LNC155) has the lowest polarization resistance and activation energy, 197 mω cm2at 600 °C and 0.91 eV, respectively. Therefore it is the most promising material of the LNC group for electrochemical applications. X-ray diffraction analysis revealed that none of the materials is single-phased after heat treatment at 800 °C as they contain residues of La2O3and La2NiO4-δ