隨著人口與科技的成長，全球對於水與能源需求大幅的增加。為了解決此問題，目前已經開發了許多技術如RO和MED。然而，這些技術會消耗大量能源，並且會直接或間接依賴化石燃料，因而引起其他環境問題，如全球暖化和空氣污染。利用太陽能進行水處理已被廣泛認為在不犧牲環境和資源的前提下，克服水資源與能源短缺的可持續解決方案之一，因為太陽與海洋是取之不盡的綠色能源。然而，目前太陽能蒸餾以獲得飲用水資源為主，而鮮少有能源獲取方面的應用，這大大的限制了太陽能蒸餾的發展空間。
為此，本研究開發多功能石墨烯-PVDF薄膜，利用太陽蒸發與海浪達到同時產電與產水的目的。我們利用石墨烯誘導PVDF晶相從原本的α phase自組裝成具有壓電性的β phase，再藉由海水波浪驅動β-PVDF將機械能轉換成電能。借重石墨烯-PVDF堆疊的界面水通道，將海水傳輸至液氣蒸發界面，再透過石墨烯進行光熱轉換獲得熱能來蒸發海水以獲得飲用水。
本研究先利用SEM、DM、XRD、FTIR、WCA等儀器鑑定石墨烯-PVDF薄膜物理性質，再利用EIS對石墨烯-PVDF薄膜進行一系列的電性測試，最後進行薄膜的效能測試。測試結果指出該薄膜在1倍太陽光下可獲得1.27kg m-2水蒸發量，且蒸餾後的純水中鈉、鎂及鈣離子濃度均低於世界衛生組織(WHO)的飲用水標準。同時在1Hz震盪所產生的水波下薄膜可輸出約2.8伏特之穩定電壓且換算成能量密度可達18.9Wm-2。總體而言，這項工作對於未來開發同時產水與產電的薄膜結構設計提出全新的見解。

With the growth of population and technology, the global demand for water and energy have increased significantly. Because the sun and the ocean are green and inexhaustible energy sources.
In this study, a multi-functional graphene-PVDF membrane was developed to utilize solar evaporation and ocean waves to achieve simultaneous water and electricity production. We use graphene to induce PVDF to self-assemble into a piezoelectric β phase, and use wave to drive β-PVDF to convert mechanical energy into electrical energy. In addition, the graphene-PVDF stacked interface water channel, the seawater is transported to the liquid-gas evaporation interface, and then the graphene is used to convert the light to heat to obtain heat energy to evaporate the seawater to obtain drinking water.
The results indicate that the membrane can obtain 1.27 kg m-2 water evaporation under 1 sun, and its ion concentration is lower than the drinking water standard of the World Health Organization (WHO). At the same time, the membrane can output under the water wave generated by 1Hz oscillation stable voltage of about 2.8 volts and converted into energy density of up to 18.9Wm-2. This work provides new insights into the future development of membrane structure designs that simultaneously produces water and energy.

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