阳极功能层对燃料电池性能的影响  

Influence of anode functional layer on fuel cell performance

作　　者：陈孔发[1] 吕喆[1] 陈相君[1] 胡金艳[1] 艾娜[1] 田彦婷[1] 

机构地区：[1]哈尔滨工业大学物理系,黑龙江哈尔滨150001

出　　处：《电源技术》2009年第1期21-23,共3页Chinese Journal of Power Sources

基　　金：国家"863"计划资助项目(No.2007AA05Z139);黑龙江省自然科学基金资助项目(No.A0303)

摘　　要：用浆料旋涂法在阳极支撑体上制备了阳极功能层(AFL)。研究了AFL厚度对电池输出性能的影响。实验结果表明:AFL降低了阳极支撑体/电解质界面的接触电阻,增加了阳极的三相反应界面,但是AFL厚度的增加导致了界面接触电阻和气相扩散阻抗的增大。AFL的最佳厚度为4μm。采用4μm的AFL和La0.7Sr0.3MnO3/Sm0.2Ce0.8O1.9阴极,电池在700、750、800℃的输出性能分别为794、1016、1235mW/cm2。An anode functional layer （AFL） was fabricated on an anode substrate by slurry spin coating. The effect of AFL thickness on the anode performance was investigated. Experimental results indicate that the AFL not only reduces the contact ohmic resistance at the anode substrate/electrolyte interface, but also increases the three-phase boundary of anodes. However, both the interfacial contact resistance and gas diffusion resistance increase as the increase of AFL thickness. The optimum AFL thickness is 4 μ m. The cell with a 4- μ m-thick AFL and a La0.7Sr0.3MnO3/Sm0.2Ce0.8O1.9 cathode exhibits output powers of 794, 1 016 mW/cm^2 and 1 235 mW/cm^2 at 700, 750 ℃ and 800 ℃, respectively.

关 键 词：阳极 AFL 浆料旋涂 有效阳极厚度 

分 类 号：TM911.4[电气工程—电力电子与电力传动]