成型压力条件对钛网基膜电极组件性能的影响  

Effect of molding pressure conditions upon Ti mesh MEA performance

作　　者：汪兴兴[1] 倪红军[1] 朱昱[1] 钱双庆[1] 李志扬[1] 

机构地区：[1]南通大学机械工程学院,江苏南通226019

出　　处：《电源技术》2016年第12期2358-2360,2387,共4页Chinese Journal of Power Sources

基　　金：国家自然科学基金(51305212);江苏高校优势学科建设工程资助项目[苏政办发〔2014〕37号];江苏省政策引导类计划(产学研合作)项目(BY2015047-02);江苏省基础研究计划(自然科学基金)项目(BK20161289);南通市应用基础研究计划项目(GY12015020)

摘　　要：为了获得合适的钛网基膜电极组件(MEA)的成型压力条件,以钛网作为电极支撑体材料,采用滴涂的方法制备了钛网基MEA阳极和阴极,并在135℃下,采用0、2.5、5、7.5和10 MPa的成型压力分别热压了5组钛网基MEA。对MEA的微观形貌观察、厚度测量和单电池极化性能研究,结果表明:随着成型压力逐渐增大,钛网基MEA成型厚度逐渐变薄,功率密度峰值先逐渐增大,5 MPa时达到最大值,后逐渐减小。得出5 MPa的成型压力比较合适于钛网基MEA的压制。In order to obtain suitable titanium mesh MEA molding pressure conditions, titanium mesh was used as electrode substrate material, anode and cathode of titanium mesh MEA were prepared by drip-coated method, and under 135 ℃ with pressure of 0, 2.5, 5, 7.5 and 10 MPa, respectively, forming five groups of titanium mesh MEA. Micromechanism Observation, thickness measurement and single-cell test to MEA show that： with increasing molding pressure, molding thickness of titanium mesh MEA is getting thin gradually, MEA highest power density increases before 5 MPa; it reaches highest power density at pressure 5 MPa, and then decreases gradually. Conclusion show that molding pressure of 5 MPa is more appropriate for making the titanium mesh MEA.

关 键 词：直接甲醇燃料电池 膜电极组件 工艺条件 钛网 电池性能 

分 类 号：TM911[电气工程—电力电子与电力传动]