纳米复合双极板在质子交换膜燃料电池环境中的老化分析

Ageing Analysis of the Bipolar Plates Fabricated from Aromatic Polydisulfide/Graphite Nanocomposite in Simulated PEMFC Environment

介绍了质子交换膜燃料电池双极板的制备与性能研究。本实验以环状双硫醚和可膨胀石墨为原料,通过原位开环聚合制备了两组不同的复合双极板,并对其电导率、弯曲强度、质量和表面形态等物理性质的老化情况进行了分析。结果表明,这些双极板在质子交换膜燃料电池的模拟工作环境中具有良好的耐老化性能。

Two different bipolar plates were fabricated using macrocyclic disulfide oligomers and expanded graphite via in situ ring opening polymerization （ROP）. Their aging behavior was investigated by means of the immersion test. The aging behavior was characterized according to the changes in property before and after the immersion test. The electrical conductivity and mechanical properties were determined using the four-probe method and three point bending method, respectively. The experimental results show that the as-made bipolar plates have good corrosion resistibility in the simulated solution of 0.01 mol/L HCI ＋0. 01 mol/L Na2SO4.