本研究製作了一個由玻璃底板、金屬下電極、鐵氟龍薄膜、以及導電上電極所製成的三明治結構試片，將水滴滴落於其上，發現在上下電極之間會產生一個電壓訊號，故將此裝置稱為滴水生電裝置。在此描述一個典型的輸出電壓訊號，當水滴觸碰到同時觸碰到鐵氟龍與上電極時，產生一個瞬間的輸出電壓，並以對數衰減，轉為反向電壓，當水滴離開鐵氟龍時，輸出歸零。
此研究以一個自然對數衰減的曲線與反向的線性方程式的組合對輸出電壓訊號進行擬合，獲得高度的一致性，並由此推測出本裝置的等效電路模型。當水滴落在滴水生電裝置並同時觸碰到鐵氟龍與上電極時，可等效為六元件的閉路電路，含有四個電容與二個電阻元件。上電極的寬度、形式，以及滴水的高度皆被改變，藉以得出更清楚的等效電路模型。實驗結果顯示，在水/鐵氟龍、水/上電極介面所形成的二個電雙層電容，皆可在討論RC電路衰減時忽略。同時，由上電極/鐵氟龍/下電極、水滴/鐵氟龍/下電極所構成的二個電容，則不可忽略。水滴同時觸碰到鐵氟龍與上電極時，其與鐵氟龍的接觸面積，對於裝置電壓訊號的最大輸出、衰減、反轉有著重大的影響，其中，最大輸出電壓與衰減由此面積所控制，反向電壓則是由此面積的變化率所決定。
除了等效電路外，水溶液的離子濃度、離子價數對於裝置發電效率的影響也在此討論。實驗結果顯示，當鹽水的濃度越高，其裝置輸出電壓越低；使用二種不同價數的水溶液做比較，在濃度相同時，價數較高者，裝置輸出電壓較低。將此現象與德拜長度連結，發現當德拜長度越長，其裝置輸出電壓越高，而德拜長度正是用來描述電雙層厚度的特徵長度。此結果顯示，雖然電雙層對於RC電路衰減時間沒有影響，卻是決定最大瞬間輸出電壓的因素。

Droplet impact a sandwich structure, which comprises of a polytetrafluoroethylene film (PTFE) on aluminum substrate plus a conductive top electrode, and forms the droplet-based electricity generator (DEG). A specific output voltage curve exhibits instantaneously peak, then relax (decade to 36.8 %), turn to negative, finally return to origin as droplet contacts the electrode. The equivalent electric circuit (EEC) consisted of resistance-capacitor (RC) circuit relaxation and linear volt-time curve achieves good correlation with output curve, it helps to illustrate the DEG theory. During an impinged droplet spreading on the PTFE and top electrode, four capacitors and two resistances are formed to create EEC model. The experimental results show that electrical double-layer capacitors (EDLC) contains C1 and C2 are the interfaces of droplet / PTFE and droplet / top electrode, respectively, can be neglected. The top electrode / PTFT / substrate (Ce) and droplet / PTFE / substrate capacitor (Cd) are parallel connected, dominate instantaneously voltage behaviors, relaxation time and reversely return to origin. Besides, relaxation time and reverse voltage are controlled by droplet area and rate of droplet area change, respectively. The salt water with difference concentration are also identify. The instantaneously peak voltage is inversely proportional to the salt water concentrations, meanwhile, the RC circuit relaxation time is independent of concentrations. This phenomenon clearly demonstrates that higher EDLC generated by concentration of salt water doesn’t impact the relax behavior but instantaneously peak voltage is affected.

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