设计了混合单催化层[m(PtRu):m(Pd)=1:1]、双催化层[m(PtRu):m(Pd)=1:1]和三层催化层[m(PtRu):m(Pd):m(PtRu)=1:2:1]等阳极催化层结构的膜电极组件(MEA),催化剂总载量均为8mg/cm^2。混合单催化层和三层催化层可提高直接甲酸燃料电池(DFAFC)的稳定性和燃料利用率。以2mol/L甲醇+10mol/L甲酸为燃料,三层催化层MEA的峰值功率密度从以10mol/L甲酸为燃料的36.6mW/cm^2提高到43.1mW/cm^2,放电电压从0.44V提高到0.45V。
Membrane electrode assembly(MEA) with anode catalyst layer structures of mixed single catalyst layer[ m (PtRu) : m(Pd) = 1:1],double catalyst layers[ m(PtRu): m(Pd)= 1:1] and three catalyst layers[ m(PtRu) : m(Pd) : m(PtRu) = 1:2: 1] was designed, the total catalyst loading was all for 8 mg/cm2. Mixed single catalyst layer and three catalyst layers could improve the stability of direct formic acid fuel cell(DFAFC) and efficiency of fuel. When using 2 mol/L CH3OH + 10 mol/L HCOOH as fuel,the peak power density of MEA with three catalyst layers improved from 36.6 mW/cm2(using 10 mol/L HCOOH as fuel) to 43.1 mW/cm2,the discharge voltage was increased from 0.44 V to 0.45 V.