基膜活化过程由净化过程和溶胀过程两部分组成,是以Nafion324为基膜制备β-PbO2-SPE复合膜电极的重要环节.实验确定出了基膜净化过程的顺序和方法,并借助于具体的β-PbO2沉积过程,通过SEM,EDS,DC照片和XRD分析,证明在3.0 mol/L NaOH溶液中浸泡25天可以使基膜充分溶胀,更有利于β-PbO22沉积.实验结果同时显示,按上述方法活化基膜可以得到β-PbO2沉积量多,致密,表面积大,性能较为优良的复合膜电极.
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