2013-08-012024-05-18https://scholars.lib.ntu.edu.tw/handle/123456789/713324摘要：由於世界各國對再生能源發展及電網管理的推動，儲能應用已越來越受重視。未來十年儲能市場預估會成長超過二十倍，進而成為下一個億元產業。電化學儲能系統(electrochemical energy storage)因在放電時間與額定功率具有很大的彈性空間，故在電網應用(grid application)中備受青睞。其中，氧化還原液流電池(redox flow battery)的能量乘載容量與功率乘載容量可以依不同規模的應用客製化分離設計，在固定式電網應用最具潛力。然而，液流電池的市場應用因昂貴的離子交換膜及電解質而受限。無隔膜式可溶性鉛酸液流電池(membraneless soluble lead acid flow battery)因不具昂貴組成元件，固有極大的市場潛力。然而，目前該電池的充放電壽命過短，不能滿足儲能應用的需求。 本計畫提出從基本面著手，逐步研究了解無隔膜式可溶性鉛酸液流電池技術。首先設計與建構小型實驗室電池，針對此電池量測關鍵的熱力與動力學性質。這些量測結果將用來導引電池的最佳化設計與操作。我們將結合相場理論模擬(phase field modeling)與異地(ex situ)實驗觀測電極上電化學沉降的過程，進而了解電池衰減現象與成因。奠基於數值模擬的預測與實驗結果的分析，我們將增大可溶性鉛酸液流電池的規模及建立電池堆(stack)。並針對設計建構的大型液流電池及電池堆進行充放電實驗及電化學量測。最終期望能經由本研究促成無隔膜式可溶性鉛酸液流電池的商業化及儲能應用的發展。 <br> Abstract: Energy storage is attracting attentions because of the development of renewable energy and power grid management. The market of energy storage is predicted to expand over twenty folds in the coming ten years and can lead to next billion dollar industry. Electrochemical energy storage (EES) is favorable over other technologies in grid applications due to its flexibility of various power ratings and discharge time. Among EES technologies, the redox flow battery is promising for stationary applications because its energy and power capacity can be designed separately to meet the demand of various scales. However, the high cost of ion selective membranes and electrolytes is preventing its popularity. A membrane-less soluble lead acid flow battery is free of these expensive components and has great potential to prevail in the energy storage market. However, the current cycle life of this battery is still too short to meet the durability requirement. We propose to step-by-step study the membrane-less soluble lead acid flow battery. Beginning with a small-scale laboratory cell design and development, the pertinent thermophysical and kinetic properties will be measured. The acquired information will serve to provide guidance for the optimization of battery design and operation. Phase field modeling will be conducted together with ex situ examination of the electrodeposition processes on the electrodes to rationalize the failure modes. On the basis of the model prediction and experimental data analysis, we can further scale up and stack up the flow batteries. Cycling experiments and electrochemical measurements will be performed to evaluate the system and stack design. Ultimately, we hope to facilitate the commercialization of redox flow batteries and the development of energy storage.鉛酸液流電池相場理論電沉積電化學儲能電網lead acid flow batteryphase field modelelectrodepositionelectrochemical energy storage