近年來由於石墨烯獨特的物理化學性質而掀起一股研究風潮。根據研究顯示，具有三維孔洞狀的石墨烯泡棉相較於平面二維石墨烯薄膜在能量儲存設備的應用上展現較好的電性質。科學家們皆使用具有孔洞狀之骨架使碳沉積於骨架上來製備三維石墨烯泡棉。
目前研究利用鍍鎳的方式製備出具有10 μm孔洞的鎳骨架，但嘗試縮小孔洞會產生骨架崩塌的現象，因為石墨烯需要在極高溫的環境下生長，高溫造成金屬揮發與合成出的石墨烯所產生的表面張力是導致骨架崩塌現象的兩個重要因素。
為了得到一個具有可以調整孔洞大小的骨架作為合成石墨烯的骨架膜板，我們選擇銅奈米粒子取代鎳泡棉作為基板，如此將大幅提升所合成之三維石墨烯泡棉的表面積。並以二氧化矽殼層包覆銅奈米粒子來避免銅奈米粒子於高溫合成中產生形變。二氧化矽殼層不僅可以降低在生長石墨烯的高溫環境下所導致之金屬揮發現象，同時二氧化矽殼層的表面孔洞性更可提供碳源甲烷氣體一個通道，使碳源能抵達奈米銅表面進行催化以生成石墨烯。實驗中所合成的三維石墨烯在未來期望能去除不導電的二氧化矽殼層並製備成電極應用於能量儲存裝置上。

Graphene has proven to be promising for diverse applications in various research fields due to its unique physicochemical properties. In particular, graphene foams with three-dimensional (3D) porous structure have been reported to show better properties than two-dimensional (2D) graphene films for the development of energy storage devices. In general, synthesis of 3D graphene foams requires a reliable template as the framework for carbon deposition. However, recent research shows that Ni foams with a pore size smaller than 10 μm fail to provide an effective template for 3D graphene synthesis. This is because that the porous structure of Ni foams tends to collapse due to the elevated temperature required for graphene growth and the large surface tension resulted from as-grown graphene grains on the Ni surface. To obtain a reliable framework for the synthesis of 3D graphene with desired porous dimensions, we attempt to use copper nanoparticles rather than Ni foams as the template. To prevent the deformation in the dimension of copper nanoparticles due to thermal evaporation during the graphene synthesis process, nanoparticles coated with thermo-resistive silica porous materials are applied as the catalytic metal template for graphene growth. The silica coating not only helps to reduce the metal evaporation at high temperature but also provides a pathway to allow the carbon precursors coming into contact with the catalytic surface of copper to initiate the formation of graphene. The synthesized graphene with 3D network will be further applied to fabricate electrodes for advanced applications in energy storage devices.

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