质子交换膜燃料电池双极板材料及制备综述

Review on Materials and Preparation of Proton Exchange Membrane Fuel Cell Bipolar Plates

质子交换膜燃料电池(PEMFC)的发展显示出了它成为清洁、高效和可靠电源的潜力。双极板(BP)作为PEMFC的关键部件之一,具有提供电气连接、输送反应气体、消散反应热、去除副产物的作用,但也是制约PEMFC成本的主要因素之一。根据双极板材料的不同可以分为金属双极板、石墨双极板和复合材料双极板,本文综述了双极板材料(金属、无孔石墨和复合材料)及其制备工艺。其中,金属双极板因其优异的机械和物理性能,与无孔石墨及复合材料相比具有较强的成本优势,在乘用车应用中备受关注,但其制造工艺和耐腐蚀性是金属双极板的主要关注点。未来,开发出优良的耐蚀性和导电性涂层或新型的双极板金属材料将极大地促进PEMFC在乘用车领域的应用。

The development of Proton Exchange Membrane Fuel Cells(PEMFC)shows its potential to become a clean,efficient,and reliable power source.Bipolar Plates(BP),as one of the key components of PEMFC,provide electrical connections,transport reaction gases,however,the functions of dissipating reaction heat and removing by-products are also the main factors restricting the cost of PEMFC.BP can be divided into metal BP,graphite BP and composite BP according to different materials.This article reviews BP materials(metal,non-porous graphite and composite materials)and their preparation methods.Among them,the metal BP has a strong cost advantage compared with non-porous graphite and composite materials due to its excellent mechanical and physical properties so that it has attracted much attention in passenger car applications.While the main focus of the polar plate is its manufacturing process and corrosion resistance.In the future,the development of excellent corrosion resistance and conductive coatings or new BP metal materials will greatly promote the application of PEMFC in the passenger car field.