质子交换膜燃料电池不锈钢双极板无氰脉冲镀银  

Cyanide- Free Pulse Silver Electroplating on Stainless Steel Bipolar Plate of Photon Exchange Membrane Fnel Cell

作　　者：陈益兵[1] 赵芳霞[1] 张振忠[1] 姚振虎[1] 孙佰文 

机构地区：[1]南京工业大学材料科学与工程学院,江苏南京210009 [2]江苏省新源动力有限公司,江苏宜兴214200

出　　处：《材料保护》2011年第11期58-60,8,共3页Materials Protection

基　　金：江苏省科技厅社会发展计划(BS2007120);国家科技型中小企业技术创新基金(08026213700982)

摘　　要：质子交换膜燃料电池不锈钢双极板直流氰化镀银,污染环境、耐蚀性不理想,为此,使用无氰脉冲镀银对不锈钢双极板进行了表面改性。采用XRD,SEM,界面接触电阻测试、模拟燃料电池环境腐蚀等方法,研究了无氰脉冲镀银对不锈钢双极板性能的影响。结果表明:无氰脉冲镀银改善了镀层的微观结构,其接触电阻为镀银处理前的1/10,同时腐蚀电流密度降低了1个数量级。Cyanide - free pulse silver electroplating was adopted to modify the surface of the stainless steel bipolar plate of photon exchange membrane fuel cell(PEMFC).The effect of cyanide - free pulse electroplated Ag coating on the performance of the stainless steel bipolar plate under simulated corrosive condition of PEMFC was investigated using an X - ray diffractometer,a scanning electron microscope and an interface contact resistance meter.It was found that cyanide-free pulse electroplated Ag coating helped to improve the surface microstructure of the stainless steel bipolar plate and significandy reduce its contact resistance(reduced to 1/10 of that before pulse Ag electroplating) and corrosion current density(reduced by one order of magnitude).

关 键 词：无氰脉冲镀银 不锈钢双极板 质子交换膜燃料电池 微观结构 接触电阻 耐蚀性 

分 类 号：TM911.4[电气工程—电力电子与电力传动]