直接甲醇燃料电池（DMFC）具有结构简单、燃料便于携带与储存、理论比能量高等优点，在小型可移动电源和微型电源方面具有广阔应用前景，被认为是锂离子电池的理想替代品。 双极板作为小型直接甲醇燃料电池的关键部件，负责燃料和氧化剂的输送及分配，收集电流，联结电池等工作，与膜电极组成了小型直接甲醇燃料电池的基本单元——单电池。双极板的结构和其决定的燃料输送系统的对电池的功率、效率、寿命和成本有着至关重要的影响。因此，开展双极板的研究，对提高电池性能和稳定性具有重要意义。 本论文围绕“实用化”对物料输送系统，双极板制备材料及流场结构进行探索性研究，并组装完整的单电池，通过绘制极化曲线，分析影响电池性能的因素，为研制高效、低成本的直接甲醇燃料电池提供科学依据和技术支撑。 本文主要内容：首先，选取304不锈钢作为制备双极板的材料，并对其进行表面镀铜处理，通过与碳纸的接触实验验证了经过表面处理后的304不锈钢导电性能得到了提升；第二，分析了电池的物料输送系统，设计出一种基于渗透汽化膜的被动式输送系统，并针对此系统提出甲醇供给控制方法，设计了相应的流场板；第三，完成对流场板、膜电极以及其它电池部件的制备，并实现了电池的密封和电流的引出，组装出了基于渗透汽化膜的被动式DMFC单电池；第四，通过改变流场板开孔率分析了流场对电池性能的影响；最后通过控制和改变工作条件得到了电池在不同状态下的性能，分析了各种极化对电池性能的影响，初步验证了被动式自呼吸DMFC的实用价值，为小型直接甲醇燃料电池的商业化奠定了基础。

DMFC has many advantages such as simple structure, easy to carry and storage, high theory specific energy, etc. It has broad application prospect in small portable power and micro power, and is believed to be the best substitution of lithium cell. Bipolar plate, the key component of micro DMFC, is responsible for the transmission and distribution of fuel and oxidant, collection of current, sealed fuel cell, etc. It forms the basic unit of DMFC with membrane electrode---single fuel cell. The structure of dual-plate has a significant influence on the power, efficiency, life-span and costs of the fuel delivery system. Therefore, the study of bipolar plate is of great significance to improve cell's performance and stability. This thesis aims to do some exploratory study of fuel delivery system, manufacturing materials and flow structure of the bipolar plate, assemble complete single fuel cell. The thesis supply the scientific basis and technical support of researching efficient and low cost DMFC by drawing polarized curve and analyzing the factors of effecting fuel cell's performances. Main contents: First, select 304 stainless steel as the material of making the Bipolar plate, and copperize the surface. Experiment, the contact of carbon paper and 304 stainless steel can upgrade. 304 stainless steel's electroconductibility, is proved. Second, analyse fuel cell's fuel delivery system, design a passive conveying system based on the Pervaporation Membranes, propose carbinol supplying control method according to the passive conveying system, and design relevant flow-field plate. Third, complete the production of flow-field plate, film electrode and other parts of the fuel cell, realize fuel cell's sealing and current's eduction, and assemble passive DMFC single fuel cell based on the Pervaporation Membranes. Fourth, analyse flow field's effect to the performance of fuel cell by changing flow field opening rate . Finally, analyse the effects of all kinds of polarization towards the performance of fuel cell through controlling and changing the working conditions. Preliminarily validate the practical value of passive and air breathing DMFC, and lay the foundation of commercialization of DMFC.