全釩氧化還原液流電池之一體化雙極板之開發

全釩氧化還原液流電池（All-Vanadium Redox Flow Battery，VRB）是種能將可再生能源與儲能系統整合裝置。它們具有靈活的設計，深度放電容量，快速的響應時間，且循環壽命長等優點，因此近年來已與再生能源系統做結合，以作為平衡負載及儲能之用，如結合太陽光電發電及風力發電機等。目前各相關研究單位在全釩電池的研究大多著重於關鍵零組件之開發，如電極材料及電解液隔離膜等，較少研究著重於雙極板框架之開發。傳統的雙極板零組件繁多且組裝過程繁雜費時。若能簡化傳統雙極板之零組件，就能有效的降低液流電池之成本。在本研究中，利用射出成型之方法，開發一種液流電池用的一體化雙極板。首先針對一體化雙極板之流道設計，以模擬軟體對其探討，研究流道設計對反應區域流場之影響，找出較佳之流道設計，並研究主支流流道數目對電解液的分佈均勻性之影響，以增加液流電池之反應效率。再以模流分析軟體對一體化雙極板的框架做射出成型初步的分析探討，以減少製作模具不必要的支出，其主要包括模具設計及射出成形之參數討論。最後本研究還討論了石墨板設計對一體化雙極板之成形性。

關鍵字

電解液分佈；雙極板；全釩氧化還原液流電池；射出成型

並列摘要

All-vanadium redox flow batteries (VRBs) are considered as energy storage systems integrated with renewable power. They have the advantages of flexible design, deep discharge capacity, rapid response time, and long cycle life. They have been used in combination with solar and wind energy as load leveling and energy storage in recent years. Most current researches focused on the development of key components, such as electrode materials and proton proton exchange membrane. Few studies focused on the development of the bipolar plates. A traditional bipolar plate consists of a lot of components and the assembling process is time consuming. If the manufacturing process of bipolar plates is simplified, the cost of VRBs can be significantly reduced. In this study, an integrally molded bipolar plate is designed and fabricated by injection molding. First, the effect of flow field pattern on electrolyte distribution within the active area is investigated. Secondly, the effect of injection parameters on frame formability is studied by simulation. The major injection parameters include mold design and injection parameter. The effect of graphite plate design on formability is also discussed.

並列關鍵字

electrolyte distribution ； bipolar plate ； all-vanadium redox flow battery ； injection molding

參考文獻

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全釩氧化還原液流電池之一體化雙極板之開發

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