造孔剂含量对固体氧化物燃料电池阳极的结构与电性能的影响  

Influence of Pore-former Content on Anode Structure and Electrical Performance for Solid Oxide Fuel Cell

作　　者：石纪军[1] 程亮[1] 吴也凡[1] 罗凌虹[1] 杨琳[1] 

机构地区：[1]景德镇陶瓷学院,景德镇333001

出　　处：《佛山陶瓷》2013年第12期20-23,共4页Foshan Ceramics

基　　金：国家自然科学基金(51162014;51262010);江西省重大科技创新研究项目(20114ACE00300);江西省主要学科学术和技术带头人培养计划项目(20133BCB22009);江西省自然科学基金(20122BAB206009;20122BAB206010)

摘　　要：通过向阳极添加造孔剂(PMMA)改善阳极的微观结构,研究不同含量的造孔剂(PMMA)对阳极的显微结构、电性能的影响。利用SEM、电化学工作站等测试手段对单电池的结构和电性能进行了表征。研究结果表明,添加7 wt.%的PMMA造孔剂制备的单电池,阳极的孔隙率高,阳极中的气孔分布均匀,结构规整,降低了燃料气的传输阻力,提高了三相反应界面,获得了良好的电性能。以H2+3%H2O为燃料气,在750℃下单电池的开路电压(OCV)为1.08 V、最大功率密度为0.82 W/cm2、欧姆阻抗为0.20Ω·cm2、两极阻抗为0.53Ω·cm2。The influence of microstructure and electrical performance on different content of pore-former PMMA were investigated by adding pore-former （PMMA） to improve anode microstructure. The structure and electrical performance of single cell were characterized by SEM, electrochemical workstation and so on. The results shows that, high porosity anode with pore distribution uniformity and regular structure of single cell was prepared by adding 7% pore-former PMMA, which reducing transmission resistance of fuel and increasing the length of triple phase boundary（TPB）. Therefore, good electrical performance of open circuit voltage （OCV） of 1.08 V, maximum power density of 0.82 W/cm2, Ohmic resistance of 0.20Ω·cm2, polarization resistance of 0.53Ω.cm2 for single cell were obtained using H2 ＋3% H20 as fuel gas at 750℃.

关 键 词：固体氧化物燃料电池 阳极 造孔剂 电性能 微观结构 

分 类 号：TM911.4[电气工程—电力电子与电力传动]