| Summary: | 碩士 === 國立交通大學 === 材料科學與工程學系所 === 103 === In this study, we discuss the mechanism of plasma enhance contact glow discharge to produce few layer graphene in alkaline solution. The electrolytes are chosen from IA hydroxides (LiOH, NaOH, KOH) as the electrolytes. When the plasma working, we find the I-V curve is the same as contact glow discharge. After that, the deeply discussion of the process is ongoing. The OES(Optical electron spectrum) is used to identify the mechanism. The temperature which much higher than the boiling temperature of water lead to the vapor layer, and the cations (Li+, Na+, k+) of the electrolytes are attracted by the cathode. And the cations press the vapor layer to exfoliate the graphite into few layer graphene. In this study, we also found that the few layer graphene from the LiOH solution is a lot of different from the others (NaOH, KOH). This result can also be explained by the mechanism of this process. This study not only clarify the mechanism of the process for getting thinner and larger graphene but improve the surface area from 45.8 m2 /g to 176.8m2 /g.
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