阳极功能层厚度对中温固体氧化物燃料电池电性能的影响  

Influence of Thickness of Anode Functional Layer on Electrical Performance for Intermediate Temperature Solid Oxide Fuel Cell

作　　者：石纪军[1] 程亮[1] 罗凌虹[1] 吴也凡[1] 易罗财 

机构地区：[1]景德镇陶瓷学院,景德镇333001

出　　处：《佛山陶瓷》2014年第12期17-19,32,共4页Foshan Ceramics

基　　金：国家自然科学基金资助(51162014;51262010;51462011);江西省主要学科学术和技术带头人培养计划项目(20133BCB22009);江西省高等学校科技落地计划(KJLD13072)

摘　　要：采用水系流延成型工艺,研究了阳极支撑型中温SOFC阳极功能层厚度对中温SOFC电性能的影响,运用电化学工作站对单电池的电性能进行了表征。结果表明,在相同的运行温度下,单电池的功率密度随着功能层厚度的增加而减小,而极化阻抗则相应增加;单电池的功率密度随着运行温度的提高而增大,对应的极化阻抗则减小。以H2+3%水蒸气为燃料气,空气为氧化气,在750℃运行条件下,功能层厚度为25μm、30μm和35μm的单电池的功率密度分别为0.31 W/cm2、0.10 W/cm2和0.07 W/cm2,相应的极化阻抗则分别为1.05Ωcm2、2.41Ωcm2和3.08Ωcm2;阳极功能层厚度为25μm的单电池的测试温度在700℃、750℃和800℃,其功率密度分别为0.22 W/cm2、0.31 W/cm2和0.45 W/cm2,对应极化阻抗分别为1.90Ωcm2、1.05Ωcm2和0.67Ω/cm2。The effect of anode functional layer on its electrical performance for anode supported intermediate temperature solid oxide fuel cell was investigated by aqueous tape casting. Electrical performance of single cell was characterized by electrical chemistry working station. The results show that, the power density of single cell decreased with the increasing of functional layer thickness at the same working temperature,they increased with the increasing of working temperature, but polarization resistance was opposite trend. Power density of single cell with functional layer thickness of 25 μm, 30 μm and 35 μm were 0.31 W/cm^2, 0.10 W/cm^2 and 0.07 W/cm^2 using H2＋3%H2O as fuel, air as oxidation gas at 750 ℃, respectively, while polarization resistance were 1.05Ωcm^2, 2.41Ωcm^2and 3.08Ωcm^2. The power density of single cell with functional layer thickness of 25 μm were 0.22W/cm^2, 0.31 W/cm^2 and 0.45W/cm^2 at 700 ℃、750℃and 800 ℃, but polarization resistance were1.90 Ωcm^2、1.05 Ωcm^2and 0.67 Ωcm^2, respectively.

关 键 词：固体氧化物燃料电池 功能层 电性能 

分 类 号：TM911.4[电气工程—电力电子与电力传动]