氫能被視為一種極具潛力的綠色能源，為了提升氫能的使用效率與發展，如何儲存便是一項必須要面對的問題。為了因應此問題，學者提出了以奈米氣泡儲氫的概念，並透過Young-Laplace equation可知，奈米氫氣泡因為奈米尺度的氣泡粒徑，呈現內壓高的自主高壓之優勢，將氫氣以奈米氣泡之方式儲存為新一代氣體儲存翻開嶄新的一頁。而為了穩定的儲存奈米氫氣泡，同時達成美國國家能源局(Department of Energy，簡稱DOE)對於儲氫效率所訂定之4.5wt%之要求，質量輕、比表面積高的活性碳材再度吸引人們的目光。
本研究利用自製以葡萄糖為基底之奈米活性碳球，透過含浸法與還原反應，生成鎳修飾之活性碳奈米球，並具有粒徑50 ± 10奈米、高比表面積、良好之孔道結構等特性，使其在物理與化學吸附上有著不錯的表現。在77 K、100大氣壓的環境條件下，鎳修飾活性碳奈米球可達成約7.28 wt%之重量百分儲氫效率。
相較於以往的儲氫研究，其研究重點多著重於氫氣液化以提高能量密度，其氫氣在儲存後的釋放步驟往往需要高溫環境作為驅使，進而產生另外的能耗。本研究透過自製碳奈米球，並藉由還原金屬觸媒以提升其化學吸附效率，在低溫高壓下呈現高水平的儲氫能力，顯示出極佳的氣象吸附能力，用以作為奈米氫氣泡吸附體的一項潛力選擇。

Hydrogen is considered a promising green energy. Therefore, in order to enhance its utilization efficiency and development, “ How to storage ” has become a problem we are facing. To deal with it, the concept of storing hydrogen as the nanobubble has been proposed by researchers. According to Young-Laplace equation, hydrogen nanobubble could be stabilized due to its high inner pressure for its nano-scale diameters. To stably keep the hydrogen nanobubble, and simultaneously reach 4.5 wt% set by DOE as the goal of hydrogen storage efficiency, activated carbon materials have attracted the attentions for its low mass and high specific surface area.
In this study, we take the homemade, glucose-based carbon nanosphere (named as ACNS) as the base material. After impregnation and reduction reaction, the metal decorated ACNS have been synthesized with its size range in 40–60 nm, high specific surface area, well dispersed pore structure. These features allow it exhibit excellent adsorption. Under the condition of 77 K and 100 atm, the Nickel- decorated ACNS could reach 7.28 wt% for its weight capacity for hydrogen storage efficiency.
Compared with the previous hydrogen storage research, the focus is more on hydrogen liquefaction to increase energy density. Hence, the desorption step of hydrogen is necessary to be conducted under high temperature environment for this condition, thus then generating additional energy consumption. This study enhance the chemisorption by decorating the metal catalyst on the surface of homemade 2A-CNS-c , and exhibited high levels of hydrogen storage capacity under low temperature and high pressure. It shows excellent gas-phase adsorption capacity, hence act as a potential choice for nano hydrogen bubble adsorbent.

摘要 i
Abstract ii
誌謝 iv
總目錄 v
表目錄 viii
圖目錄 ix
第一章 緒論 1
1.1 前言 1
1.2氫氣儲存方式 2
1.2.1液化氫氣儲存 4
1.2.2 壓縮氫氣儲存 4
1.2.3固態氫氣儲存 5
1.3氫氣產生方式 6
1.4吸附劑簡介 8
1.4.1化學吸附 9
1.4.2物理吸附 10
1.4.3吸附劑的特性與種類 11
1.4.4 活性碳吸附劑 13
1.5比表面積與孔徑量測簡介 15
1.6奈米氣泡簡介 18
1.7研究動機與目的 20
第二章 文獻回顧 21
2.1碳材儲氫 21
2.2碳球製備 23
2.3碳材活化反應 26
2.4氫溢流效應 28
第三章 實驗設計與規劃 32
3.1實驗規劃 32
3.2二次活化碳奈米球製程 33
3.3含浸式鎳金屬修飾製程 35
3.3.1 高溫鍛燒還原法 35
3.4分析儀器 37
3.5實驗藥品與儀器 39
3.5.1 實驗藥品 39
3.5.2 實驗儀器 40
第四章 結果與討論 41
4.1自製高孔隙率活性碳奈米球 41
4.1.1 高孔隙率活性碳奈米球之合成與形貌觀測 41
4.1.2 高孔隙率活性碳奈米球氫氣吸附效能量測 42
4.1.3 高孔隙率活性碳奈米球之拉曼與XPS分析結果 44
4.1.4 高孔隙率活性碳奈米球氫氣吸附效能循環測試 46
4.1.5 高孔隙率活性碳奈米球合成之不穩定性 47
4.2奈米鎳金屬修飾活性碳奈米球 48
4.2.1奈米鎳金屬修飾活性碳奈米球合成與形貌觀測 48
4.2.2奈米鎳金屬修飾活性碳奈米球氫氣吸脫附效能量測與含浸參數最佳化 50
4.2.3奈米鎳金屬顆粒之形貌觀測與X光繞射分析 52
4.3奈米鎳離子修飾製程改良 55
4.3.1 活性碳奈米球於去離子水中的分散性改良 55
4.3.2 降低高溫鍛燒還原溫度 57
4.4奈米氣泡產生與觀測 59
4.4.1利用臨場濕式環境穿透式電子顯微鏡觀測活性碳奈米球與奈米氫氣泡 59
第五章 結論 61
第六章 未來工作 62
第七章 參考文獻 63

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