电弧放电法制备石墨烯及其在导电油墨中的应用

发布时间：2018-04-22 01:27

  本文选题：石墨烯 + 电弧放电　； 参考：《无机材料学报》2017年01期

【摘要】：导电油墨是印刷电子技术中使用的关键电子材料,而导电填料作为导电油墨的主要成分要求其化学性能稳定且电导率高。其中,基于石墨烯的导电油墨因为其优异的电学性质受到广泛关注。本研究采用直流电弧放电法制备的石墨烯作为导电填料,并通过扫描电子显微镜、透射电子显微镜、拉曼光谱等手段对制备的石墨烯进行了表征。结果表明:直流电弧放电法制备的石墨烯为2~10层、尺寸在100~200 nm范围且纯度高、结晶性好。在此基础上,研究了涂层厚度、热处理温度以及弯曲角度等对石墨烯导电油墨导电性能的影响。研究发现,石墨烯导电油墨电阻率与涂层厚度、热处理温度成反比,且随着厚度、温度的增加石墨烯导电油墨的电阻率逐渐降低。并且样品在柔性基底上经过不同角度的弯曲折叠后电阻率没有明显变化。当厚度为170μm的样品经过360℃(30 min)热处理后,石墨烯导电油墨的电阻率仅为0.003?·cm。上述结果表明,电弧法制备的石墨烯导电油墨有望成为未来印制电子领域的关键材料。
[Abstract]:Conductive ink is a key electronic material used in electronic printing technology. As the main component of conductive ink, conductive filler requires stable chemical properties and high conductivity. Among them, conductive ink based on graphene has attracted wide attention because of its excellent electrical properties. Graphene prepared by DC arc discharge method was used as conductive filler. The graphene was characterized by scanning electron microscope, transmission electron microscope and Raman spectroscopy. The results show that the graphene prepared by DC arc discharge method has 10 layers of graphene, and its size is in the range of 100 ~ 200nm, the purity is high, and the crystallinity is good. On this basis, the effects of coating thickness, heat treatment temperature and bending angle on the conductive properties of graphene conductive ink were studied. It is found that the resistivity of graphene conductive ink is inversely proportional to the coating thickness and heat treatment temperature, and the resistivity of graphene conductive ink decreases with the increase of the thickness. The resistivity of the sample does not change obviously after bending and folding at different angles on the flexible substrate. The resistivity of graphene conductive ink is only 0.003? cm when the sample with 170 渭 m thickness is heat treated at 360 鈩，

本文编号：1785002