Ni-Fe-LSGMC8.5复合阳极的研究  

Study on Ni-Fe-LSGMC8.5 composite anode

作　　者：高洁[1] 王世忠[1] 贺琼[1] 

机构地区：[1]厦门大学化学系,福建厦门361005

出　　处：《电池》2006年第4期268-270,共3页Battery Bimonthly

基　　金：福建省科技攻关计划重点项目(2003H046);留学回国人员基金资助

摘　　要：制备并表征了Ni-Fe-LSGMC8.5复合阳极,电极中的n(Ni)∶n(Fe)分别为9∶1、8∶2、7∶3和5∶5。结果表明:复合阳极中的Ni和Fe以合金的形式存在,Fe含量的增加促进了电极的烧结,同时改变了电极/电解质界面的微观结构。当电极中的n(Ni)∶n(Fe)为8∶2和7∶3时,电极具有最高的电化学活性以及最小的欧姆电阻。当阳极中的n(Ni)∶n(Fe)为8∶2时,组成的Ni-Fe-LSGMC8.5|LSGMC5|SSC-LSGMC5电池在800℃、750℃、700℃和650℃下,最大功率密度分别达到1.20W/cm2、0.92 W/cm2、0.60 W/cm2和0.39 W/cm2。Ni-Fe-LSGMC8.5 composite anodes were prepared and characterized,in which the molar ratio of Ni/Fe was 9 ： 1, 8 ： 2, 7：3 and 5：5 ,respectively. The results showed that the Ni and Fe in the anode existed in the form of Ni-Fe alloy. The increase of Fe in the electrode led to a sintering of the electrode particles as well as a change in the microstructure of the electrode/ electrolyte interface. When the molar ratio of Ni and Fe was 8 ： 2 and 7 ： 3, the anodes exhibited the highest electrochemical activity and the lowest ohmic resistance. Ni-Fe-LSGMC8.5｜LSGMC5｜SSC-LSGMC5 cell using the anode with the molar ratio of Ni and Fe （8：2）, gave the maximum power density of 1.20 W/cm^2, 0.92 W/cm^2, 0.60 W/cm^2 and 0.39 W/cm^2 at 800 ℃, 750 ℃, 700 ℃ and 650 ℃, respectively.

关 键 词：固体氧化物燃料电池 Ni-Fe-LaGaO3复合阳极 极化 交流阻抗 

分 类 号：TM911.4[电气工程—电力电子与电力传动]