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http://dx.doi.org/10.4191/KCERS.2008.45.1.755

Cathode Materials LaNi1−xCuxO3 for Low Temperature Solid Oxide Fuel Cells  

Sun, Juncai (Institute of Materials and Technology, Dalian Maritime University)
Wang, Chengli (Institute of Materials and Technology, Dalian Maritime University)
Li, Song (Institute of Materials and Technology, Dalian Maritime University)
Ji, Shijun (Institute of Materials and Technology, Dalian Maritime University)
Publication Information
Journal of the Korean Ceramic Society / v.45, no.12, 2008 , pp. 755-759 More about this Journal
Abstract
New cathode materials $LaNi_{1-x}{Cu_x}{O_3}$ (typically $LaNi_{0.8}Cu_{0.2}O_3$) were synthesized using a co-precipitation method. The structure and morphology of the powders were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The composite material [$Ce_{0.8}Sm_{0.2}O_{2-\ddot{a}}$(SDC) and carbonate (${Na_2}{CO_3},{Li_2}{CO_3}$)], NiO and $LaNi_{1-x}{Cu_x}{O_3}$ were used as the electrolyte, anode and cathode, respectively. The electrochemical performance of La-Ni-Cu-O perovskite oxide at low temperatures ($400{\sim}550^{\circ}C$) was studied. The results showed that $LaNi_{0.8}Cu_{0.2}O_3$ precursor powder prepared through a co-precipitation method and calcined at $860^{\circ}C$ for 2 h formed uniform grains with diameters in the range of $400{\sim}500\;nm$. The maximum power density and the short circuit current density of the single cell unit at $550^{\circ}C$ were found to be $390\;mW/cm^2$ and $968\;mA/cm^2$, respectively.
Keywords
Cathode materials; La-Ni-Cu-O compound; SOFC; Electrochemical performances;
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