可授權專利


高效能二維二硫化鎢與還原氧化石墨烯複合物應用於超級電容器電極 Highly efficient supercapacitor electrode with two-dimensional tungsten disulfide and reduced graphene oxide hybrid nanosheets 


專利名稱 二硫化鎢/還原氧化石墨烯複合物作為超級電容電極及製造該二硫化鎢/還原氧化石墨烯複合物之方法 (WS2/RGO複合物作為超級電容電極及製造該WS2/RGO複合物之方法)
專利國家
   專利證書號
中華民國 I668718
專利權人 國立台北科技大學
發明人 林律吟、涂超智
應用領域
需求項目









技術摘要


本發明提供一種結構良好之二硫化鎢/還原氧化石墨烯(WS2/RGO)奈米片的製備,使用簡單的熔鹽法以WS2作為超級電容的電活性材料,由於WS2其在二維平面上具有大量電荷積聚位置以及RGO其可高度增強導電性並改善WS2網絡中連結性的協同效應,其在1 mV s -1 的掃描速率下,展現2508.07 F g -1 的高比電容(CF)。對於以WS2/RGO為基材的超級電容電極,其可達到在經過5,000次循環充/放電程序後98.6 %保留率的優異循環穩定度,以及整體測定庫倫效率接近100 %。結果表明,結合二維金屬硫化物和碳材料作為電荷儲存材料,可解決能源問題並實現永續社會的可能性。 The present invention provides the preparation of well-constructed WS2/reduced graphene oxide (RGO) nanosheets using a simple molten salt process as the electroactive material for SCs, which presents a high specific capacitance (CF) of 2508.07 F g -1 at the scan rate of 1 mV s -1 , because of the synergic effect of WS2with its large charge-accumulating sites on the 2D planes and RGO with its highly enhanced conductivity and improved connections in the WS2networks. The excellent cycling stability of 98.6% retention after 5,000 cycles charge/discharge process and the Coulombic efficiency close to 100% for the entire measurement are also achieved for the WS2/RGO-based SC electrode. The results suggest the potential for the combination of the 2D metal sulfide and carbon materials as the charge storage material to solve the energy problems and attain a sustainable society.


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