輕量化質子交換膜燃料電池組之設計與製作

• Main Authors: Chang-Yu Yang, 楊昌裕
• Other Authors: Yean-Der Kuan
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/f25s47

碩士 === 國立勤益科技大學 === 冷凍空調系 === 104 === At present, the fuel cells develop towards microminiaturization gradually. General fuel cells on the market have certain volumes and weights, the flow plate and current collector account for over 85% of weight. In order to meet the requirement for microminiaturization, the volume and weight of flow plate and current collector become one of keys to lightweight fuel cell. The main objective of this study is to use micro-electromechanical process and alternate material to develop a lightweight PEMFC module. The paper is divided into two parts. The first part is the design and production of lightweight current collector. The FR-4 Glass/Epoxy composite is used as substrate, the metal is deposited on the substrate surface by using thermal evaporation technology to form a metal film. The metal film consists of two layers. Layer 1 is the conducting layer, depositing highly conductive metal. Layer 2 is the corrosion resistance layer, depositing corrosion resistance metal. The developed lightweight current collector is assembled on the PEMFC single cell for performance test. Afterwards, the preferable parameters conditions are discussed of locking pressure, flow rate and temperature and metal film thickness, collocated with electrochemical AC impedance spectrum analysis system for experimental analysis. The second part is the design and production of cell stack. The lightweight current collector is used as basic design to develop a lightweight respiratory cell stack, and then the optimum parameter conditions of cell stack locking torque, flow rate and temperature are discussed, collocated with electrochemical AC impedance spectrum analysis system to compare the impedance losses in the electrochemical reaction process. Finally, the overall stability is tested. IV According to the experimental results, the lightweight current collector developed in this study can reduce the overall weight, volume and cost of PEMFC module effectively. The performance test shows better performance output and stability, and its feasibility is proved. It is very promising in the future.