臺灣博碩士論文加值系統

本研究以資源永續循環再利用為概念，利用化學活化法將甘蔗渣改質製成具有多孔結構的活性碳材料。以KOH-KNO3改質後的活性碳會表現出高的比表面積及優異的比電容值。隨後將電極、磷酸凝膠電解質及不織布隔膜以三明治結構組裝成超級電容器。在0.02 V/s掃描速率下可獲得262.4 F/g的比電容值及17.9 Wh/kg的能量密度與2021 W/kg的功率密度。且此超級電容器在恆電流下進行20000次的循環充放電測試，仍保有初始電容量的98.38%，證實此超級電容器具有極優異的循環穩定性。此外，與其他從農業廢棄物所衍生的碳電極超級電容器相比，KOH-KNO3改質後的活性碳複合電極表現出更為出色的電化學性能。

This study adopts the concept of sustainable resource recycling and utilizes chemical activation to modify sugarcane bagasse into activated carbon materials with a porous structure. The activated carbon modified with KOH-KNO3 exhibits a high specific surface area and excellent specific capacitance. Subsequently, the electrode, phosphoric acid gel electrolyte, and nonwoven separator are assembled into a supercapacitor in a sandwich structure. At a scanning rate of 0.02 V/s, it achieves a specific capacitance of 262.4 F/g, an energy density of 17.9 Wh/kg, and a power density of 2021 W/kg. Furthermore, the supercapacitor maintains 98.38% of its initial capacitance after 20,000 cycles of charge and discharge under a constant current, demonstrating excellent cycle stability. In addition, compared to other carbon electrode supercapacitors derived from agricultural waste, the activated carbon composite electrode modified with KOH-KNO3 exhibits superior electrochemical performance.

中文摘要 ……………………………………………………………………………………………………………………………………………… i
英文摘要 ……………………………………………………………………………………………………………………………………………… ii
誌謝 ………………………………………………………………………………………………………………………………………… iii
目錄 ………………………………………………………………………………………………………………………………………… iv
表目錄 ………………………………………………………………………………………………………………………………………… v
圖目錄 ……………………………………………………………………………………………………………………………………………… vi
第一章 緒論…………………………………………………………………………………………………………………………………… 1
1.1 前言…………………………………………………………………………………………………………………………………… 1
1.2 專利檢索…………………………………………………………………………………………………………………………… 3
第二章 實驗內容…………………………………………………………………………………………………………………………… 5
2.1 實驗藥品…………………………………………………………………………………………………………………………… 5
2.2 實驗儀器…………………………………………………………………………………………………………………………… 6
2.3 實驗流程…………………………………………………………………………………………………………………………… 7
2.3.1 複合電極之製備……………………………………………………………………………………………………………… 7
2.3.2 凝膠電解質之製備………………………………………………………………………………………………………… 8
2.3.3 具複合電極之超級電容器的製備…………………………………………………………………………… 9
2.4 實驗步驟與分析……………………………………………………………………………………………………………… 10
2.4.1 複合電極之製備……………………………………………………………………………………………………………… 10
2.4.2 表面結構分析…………………………………………………………………………………………………………………… 10
2.4.3 凝膠電解質之製備………………………………………………………………………………………………………… 10
2.4.4 具複合電極之超級電容器的製備…………………………………………………………………………… 10
2.4.5 複合電極之電化學分析……………………………………………………………………………………………… 11
2.4.6 超級電容器電化學分析……………………………………………………………………………………………… 11
第三章 結果與討論……………………………………………………………………………………………………………………… 12
3.1 不同複合電極之表面結構分析結果……………………………………………………………………… 12
3.2 不同複合電極之紅外光譜與X射線光電子能譜分析(XPS)………………………… 12
3.3 不同複合電極之電化學分析…………………………………………………………………………………… 13
3.4 超級電容器之電化學分析………………………………………………………………………………………… 14
第四章 結論…………………………………………………………………………………………………………………………………… 15
第五章 未來展望…………………………………………………………………………………………………………………………… 16
參考文獻 ……………………………………………………………………………………………………………………………………………… 17
英文論文 ……………………………………………………………………………………………………………………………………………… 34

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