開發新能源是人類現在面臨解決能源短缺的主要問題，滲透能在這些正處於發展中的新能源當中是一種具有高潛力的藍色能源，係透過海水與淡水間的鹽類濃度差的吉布斯自由能轉換成電能。本研究中以真空抽濾法製造由二維材料二硫化鉬與氧化石墨烯所建構的奈米通道，以電雙層效應使奈米通道成為離子選擇性薄膜，透過反向電滲析將滲透能由離子選擇性薄膜擷取出，並比對離子以水平傳輸與垂直傳輸的差異，以及具有高水中穩定性的二硫化鉬與目前廣泛研究的氧化石墨烯的傳輸比較。本文結果中指出水平傳輸較垂直傳輸高110倍的輸出功率密度，水平傳輸最高可達到0.628 W/m^2的功率密度，且在水中有高穩定性能的二硫化鉬能產生比氧化石墨烯高1.7倍的功率密度，並於高濃度工作條件下，二硫化鉬優於氧化石墨烯，並能保持一定的工作效率。透過本研究能了解二維材料在開發滲透能的潛能，在未來開發出高效離子選擇性薄膜且穩定的裝置是滲透能發展的主軸。

Renewable energy plays a key role in the development of harvesting sustainable energy from natural resources. Reverse electrodialysis (RED) is a potential method to generate energy from renewable energy sources such as seawater. RED is based on Gibbs free energy of mixing on different salt concentration between seawater and freshwater (known as blue energy). In this study, two-dimensional materials such as molybdenum disulfide (MoS2) and graphene oxide (GO) are arranged layer by layer to fabricate high ion-selective membranes containing nanochannels for harvesting the blue energy. Two major objectives of this work are: first to study the difference in ionic transport phenomena when the membranes are placed by using horizontal (in-plane) and vertical (out-of-plane) setup, and second to compare power generation performance between MoS2 and GO membranes on RED. The result shows that the power generation of the horizontal transport is 0.628 W/m^2, which is 110 times higher than that of vertical transport. The power density of MoS2-membrane is 1.7 times higher than that of GO-membrane. The energy harvesting efficiency of MoS2-membrane is better than GO-membrane under the high concentration conditions. Overall, this work shows the potential application of the 2D-materials to harvest the blue energy using RED. The development of a highly efficient ion-selective membrane and its durability should be further studied for RED.

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