能源是現在各國重要的社會議題之一，面對化石能源耗盡的問題，開發新能源成為熱門發展的項目。由水循環中的蒸發得到啟發，本研究透過蒸發做為水的驅動力，以石膏、矽藻土與碳黑製作直立式實驗裝置(EDPG)，並探討了EDPG的碳黑含量、電極位置與毛細位置對其蒸發發電性能的影響。除此之外，透過添加氯化鋰(LiCl)至EDPG之中，使裝置達到除濕與發電並行的效果。結果指出，EDPG可獨自站立於去離子水(DI water)之中，其單一EDPG最大輸出功率可達7.73 nW，且在去離子水中具有高穩定性。此外，我們研究了裝置發電原理，透過實驗我們了解到，由於電離電壓效應 (Ionovoltaic effect)，實驗裝置(EDPG)之水位高低、通道內離子流向以及電極位置，對其發電機制有著重大影響。最後，透過在EDPG中摻入氯化鋰(LiCl)後，達到了同時除濕與發電性能，結果顯示其電性響應與EDPG兩側之濕度變化有很高的靈敏度，在相對濕度差為60 %時可擷取約為150 nA的電流。透過本研究能夠了解蒸發發電機的發展潛能，並且由於體積小、製作過程簡易以及低成本，使得該裝置得以有望在未來發展出達到同時發電與除濕的高效能裝置。

Energy is one of the most important social issues in various countries. Inspired by the evaporation in the water cycle, this study uses evaporation as the driving force of water to design an upright experimental device (EDPG) which is composed of gypsum, diatomite and carbon black. The results show that EDPG can stand alone in deionized water (DI water), the maximum output power of a single EDPG can reach 7.73 nW. Also, due to the Ionovoltaic effect, the water level of the experimental device (EDPG), the ion flow in the channel and the electrode position have a significant impact on its power generation mechanism. And last, by adding lithium chloride (LiCl) into EDPG, the electrical response is highly sensitive to the humidity change on both sides of EDPG. The short circuit current can reach about 150 nA under the situation (the relative humidity difference is 60 %). Through this study, we can understand the potential of EDPG as an evaporative generator, and it is expected to develop into high-efficiency devices that can generate electricity and dehumidify at the same time in the future.

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