中文摘要：

质子交换的到煤气的散开的涂的复写纸和它的申请躺了的 pyrocarbon (GDL ) 的制造膜(PEM ) 燃料房间被描述。这张复写纸被把常规复写纸用作先锋，和涂层制作它与由经由化学蒸汽免职(CVD ) 的 pyrolyzing 丙烯的 pyrocarbon 方法。为比较，当先锋与树脂由受精列在后面，常规复写纸 composites 被使用基于平底锅的碳纤维毡也准备，塑造并且热处理。SEM 描述显示 pyrocarbon 一致地在 pyrocarbon 在纤维的表面上被扔涂的复写纸并且做了碳毡的纤维紧绑更多。相反，由于在常规复写纸的碳化收缩在纤维的矩阵和 debonding 有裂缝。性质大小证明前者比后者有好一些的电导率和煤气的渗透。另外，当前的密度电压表演测试也表明 pyrocarbon 涂层能改进为燃料房间的电极材料使用的复写纸的性质。

英文摘要：

The fabrication of a pyrocarbon coated carbon paper and its application to the gas diffusion lay （GDL） of proton exchange membrane （PEM） fuel cell were described. This carbon paper was fabricated by using conventional carbon paper as the precursor, and coating it with pyrocarbon by pyrolyzing propylene via the chemical vapor deposition （CVD） method. For comparison, conventional carbon paper composites were also prepared by using PAN-based carbon fiber felt as the precursor followed by impregnation with resin, molding and heat-treatment. SEM characterization indicates that pyrocarbon is uniformly deposited on the surface of the fiber in the pyrocarbon coated carbon paper and made the fibers of carbon felt bind more tightly. In contrast, there are cracks in matrix and debonding of fibers due to carbonization shrinkage in the conventional carbon paper. Property measurements show that the former has much better conductivity and gas permeability than the latter. In addition, current density-voltage performance tests also reveal that the pyrocarbon coating can improve the properties of carbon paper used for electrode materials of fuel cell.