燃料電池複合雙極板導電體結合技術研究

Abstract

本研究目的為利用表層硬銲技術及電鍍技術，將塑膠材料表層金屬化。經此 技術所得之複合材料除了具有外觀可看性之外，還具有電極導體之作用，更具有 輕質化、低成本、易加工等優點，可解決目前傳統塑膠電鍍中剝落現象及龜裂現 象，而造成人員之傷害及斷路情況，對於產業也將提供嶄新的技術領域運用。 由於傳統雙極板具有加工不易、成本過高及重量過重的問題，因此本研究將 進行複合雙極板的研製以及進行相關的實驗測試和分析，主要討論塑膠板結合之 最佳條件。將利用原子力顯微鏡觀察表面成長微結構、四點探針量測電阻阻抗、 金相觀察微觀組織、單向刮痕測試結合力、模擬汽車內部溫度做長時間定溫下使 用壽命之研究，最後以單電池實測電性能結果。

The purpose of this research is to metalize the surface of the plastic materials by using surface brazing and electroplating technology. This composite not only has a good exterior appearance but also has the ability of good electronic conductor. Besides, this composite has the advantages of lightweight, low cost and easy-to-fabricate, and can be used to solve the problems of cracks and exfoliations from the traditional electroplating. Due to above merits, this research can provide a brand-new technology for industrial application. Because the traditional bipolar plates are expensive, heavy-weight, and difficult to be manufactured, our research will develop a complex bipolar plate and analyze its optimal combination condition. Atomic Force Microscopy (AFM) will be used to observe the surface structure. Four-point probe will be used to measure the impedance of the complex bipolar plate. Metallograph will be used to observe the conformation. Scratch tester will be used to measure the combination force. Finally, the service life will be determined by operating at higher temperature and its performance will be tested.