不同尺寸氧化石墨烯的制备及在透明导电薄膜上的应用

发布时间：2018-02-14 23:58

本文关键词： 氧化石墨烯真空蒸镀还原分散碳纳米管透明导电薄膜　出处：《天津工业大学》2017年硕士论文　论文类型：学位论文

【摘要】：石墨烯作为一种具有单原子层厚度的二维片层材料,由于独特的光学、电学、机械及热力学等性能,使其受到了广泛的关注。在透明导电薄膜、复合材料、电池和防腐涂料等领域具有广阔的应用前景。氧化石墨烯(GO)作为石墨烯的重要衍生物,其本身具有的特殊结构和性能也被看作是一种新型的二维材料。本文以Hummers法制备不同尺寸的氧化石墨烯片层,通过控制氧化和超声得到20-50 μm的大尺寸氧化石墨烯(L-GO),和100 nm左右的小尺寸氧化石墨烯(S-GO),不同尺寸的氧化石墨烯的应用领域不同,L-GO由于其较完整的结构和较低的接触电阻在透明导电薄膜方面应用广泛,S-GO由于其较高的周长/面积比,使其在分散方向具有应用潜力。本文即对不同尺寸氧化石墨烯的制备和应用展开讨论。将GO分散液通过棒涂法制备成为氧化石墨烯薄膜,通过真空蒸镀铝膜在其表面,通过铝与盐酸反应产生的电子和初生氢还原氧化石墨烯得到石墨烯透明导电薄膜,讨论了不同尺寸的GO对石墨烯薄膜的性能影响,并探究了金属铝与盐酸混合对氧化石墨烯的还原效果及薄膜的性能分析。结果表明,铝膜与盐酸反应后可以快速温和的制备石墨烯透明导电薄膜,且粗糙度下降,薄膜在80%的透光率下,面电阻可达9.38 kΩ/sq。单壁碳纳米管(SWCNTs)由于其较强的范德华作用力,一般以团聚状存在,通过氧化石墨烯对SWCNTs进行分散制备均匀分散的碳纳米管分散液,通过喷涂法制备碳纳米管透明导电薄膜GO/SWCNTs,探究不同尺寸的GO对SWCNTs的分散效果并对不同分散液喷涂得到的薄膜性能进行分析。研究发现,S-GO的分散效果最好,且S-GO/SWCNTs分散液制备的薄膜的性能最佳,在85%的透光率下,面电阻为1.8kΩ/sq。
[Abstract]:Graphene, as a two-dimensional lamellar material with the thickness of single atomic layer, has attracted wide attention due to its unique optical, electrical, mechanical and thermodynamic properties. Batteries and anticorrosive coatings have broad application prospects. Graphene oxide (GOO) is an important derivative of graphene. Its special structure and properties are also regarded as a new two-dimensional material. In this paper, different sizes of graphene oxide lamellae have been prepared by Hummers method. 20-50 渭 m large size graphene oxide L-GOA and about 100 nm small size graphene oxide S-GOA were obtained by controlled oxidation and ultrasound. The application fields of different sizes of graphene oxide were different because of their relatively complete structure and lower grafting. The thixoresistance is widely used in transparent conductive films due to its high circumference / area ratio. In this paper, the preparation and application of graphene oxide of different sizes are discussed. Go dispersion solution is prepared into graphene oxide film by rod coating, and aluminum film is deposited on its surface by vacuum evaporation. Graphene transparent conductive thin films were prepared by electron and primary hydrogen reduction oxidation of graphene produced by the reaction of aluminum with hydrochloric acid. The effects of go on the properties of graphene thin films with different sizes were discussed. The reduction effect of the mixture of aluminum and hydrochloric acid on graphene oxide and the performance analysis of the film were studied. The results showed that the transparent conductive graphene thin film could be prepared quickly and gently after the reaction of aluminum film with hydrochloric acid, and the roughness of the film decreased. At the transmittance of 80%, the surface resistance can reach 9.38k 惟 / sq.SWCNTs) due to its strong van der Waals force, it usually exists in the form of agglomeration. The carbon nanotube dispersions with uniform dispersion are prepared by graphene oxide dispersion. The transparent conductive carbon nanotube films (GO-SWCNTs) were prepared by spraying method. The dispersion effect of go on SWCNTs with different sizes was investigated and the properties of films sprayed with different dispersions were analyzed. It was found that the dispersion effect of S-GO was the best. The films prepared by S-GOR / SWCNTs dispersion have the best properties, and the surface resistance is 1.8 k 惟 / sq. at 85% transmittance.
【学位授予单位】：天津工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TQ127.11;TB383.2

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