新型低温SOFC阴极材料LaNi_(0.8)Cu_(0.2)O_3  

New cathode material LaNi_(0.8)Cu_(0.2)O_3 for low temperature solid oxide fuel cell

作　　者：王成力[1] 孙雪丽[1] 李嵩[1] 季世军[1] 孙俊才[1] 

机构地区：[1]大连海事大学材料工艺研究所,辽宁大连116026

出　　处：《电源技术》2008年第3期177-179,共3页Chinese Journal of Power Sources

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。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 [Ce0.8Sm0.2O2-5（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/cm^2 and 1 140.6 mA/cm^2.

关 键 词：阴极材料 LaNi0.8Cu0.2O3 碳酸共沉淀法 低温固体氧化物燃料电池 

分 类 号：TM911.4[电气工程—电力电子与电力传动]