New applications of electronic devices come with integrated functionalization, size diminishment, and ultralight weight. An alternative electricity source is also demanded for effective commercialization of devices. Direct Methanol Fuel Cells (DMFCs) have the potential to play a major role as energy generators for portable applications, thus they can be a choice for new generation electronic devices. Fabricating bipolar plates (BPs) to meet the application requirements is received great attention due to their lightweight and possibility for mass production. This research focused on using polypropylene/carbon filler composites as BP materials, offering a major advantage of mass production by a conventional low-cost injection moulding technique. The purpose of this research is to inspect the feasibility of polypyrrole (PPy) coating on the composite BPs via a chemical polymerization of PPy. To accomplish effective coating, composite BPs were surface-pretreated by UV photografting prior to the PPy coating process. Effects of surface treatment and polymerization conditions, such as time of treatment or polymerization and doping agent, were investigated via physicochemical characterizations using several techniques; Fourier-transform infrared spectroscopy, X-ray photoelectron spectroscopy, contact angle measurement, and scanning electron microscopy. Indispensable determination is an electrical conductivity measurement of the composite BP surfaces. Experimental results confirm successful PPy coating, however; the adhesion test indicates that the surface interaction between the PPy layer and the BP surface needs further improvements before applying the promising BP to commercialization.

电子设备的新应用具有集成的功能化，尺寸减小和超轻巧的特点。为了使设备有效地商业化，还需要替代电源。直接甲醇燃料电池（DMFC）作为便携式应用的能源产生者有可能发挥主要作用，因此它们可以成为新一代电子设备的选择。由于其重量轻且可以批量生产，因此制造满足应用要求的双极板（BPs）备受关注。这项研究集中于使用聚丙烯/碳填料复合材料作为BP材料，通过传统的低成本注塑技术提供了批量生产的主要优势。这项研究的目的是检验通过PPy的化学聚合在复合BP上涂覆聚吡咯（PPy）的可行性。为了完成有效的涂层，在PPy涂层工艺之前，通过紫外光接枝对复合材料BP进行表面预处理。使用几种技术通过理化特性研究了表面处理和聚合条件的影响，例如处理时间或聚合时间以及掺杂剂。傅里叶变换红外光谱，X射线光电子能谱，接触角测量和扫描电子显微镜。必不可少的确定是复合BP表面的电导率测量。实验结果证实了成功的PPy涂层。