【摘要】 采用碳酸共沉淀法得到了一种新型阴极材料LaNi0.8Cu0.2O3(LNC-82),对其进行了X射线衍射和扫描电镜的表征,并采用复合材料[Ce0.8Sm0.2O2-δ(SDC)和碳酸盐(Na2CO3+Li2CO3)]为电解质,分别以NiO和LNC-82为阳极和阴极材料,考察了在低温(400～550℃)下这种钙钛矿型阴极材料的电化学性能。实验结果表明,运用碳酸共沉淀法得到了LNC-82前驱体粉末,经过860℃煅烧2h,得到了粒度均匀的粉末,其粒径约为400～500nm。单体电池在550℃下的最大比功率和短路电流分别为390.6mW/cm2和1140.6mA/cm2。更多还原

【Abstract】 A new cathode material LaNi0.8Cu0.2O3 was obtained by the co-precipitation method. The structure and morphology of the synthesized powders were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The composite materials [Ce0.8Sm0.2O2-δ(SDC) and carbonate (Na2CO3,Li2CO3)], NiO and LNC-82 were used as the electrolyte, anode and cathode, respectively. Then, the electrochemical performance of LNC-82 perovskite oxide at low temperature (400—550 ℃) was studied. The results show that the LNC-82 precursor powder which is prepared by co-precipitation method and calcined at 860 ℃ for 2 h forms uniform grains with 400—500 nm for diameter. The maximum power density and short circuit current density of the single cell unit at 550 ℃ were obtained with 390.6 mW/cm2 and 1 140.6 mA/cm2.更多还原