大面积石墨烯薄膜的电沉积制备与性能调控研究  

Fabrications and Performance Controls of Large Scale Graphene Films Based on Electrophoretic Deposition

作　　者：方少明[1,2] 程瑜[2] 位自英 李亚珂[2] 陈亚清[3] 郭东杰[1,2] 

机构地区：[1]河南省表界面重点实验室,郑州450002 [2]郑州轻工业学院材料与化学工程学院,郑州450002 [3]南京航空航天大学航空宇航学院,南京210016

出　　处：《材料导报》2014年第12期18-22,50,共6页Materials Reports

基　　金：教育部"长江学者和创新团队发展计划"创新团队(IRT1187);国家自然科学基金(21271159;50805076);教育部留学归国择优资助科研基金(1206150079);郑州轻工业学院博士研究项目资助

摘　　要：首先采用改性Hummers法制备了氧化石墨烯(GO)分子膜,然后通过电泳沉积(EPD)技术在Cu箔上电化学沉积了氧化石墨烯膜(EPD-GO),最后导入氢气气氛(800℃)下退火还原,得到大面积导电石墨烯薄膜(TRGE)。利用X射线衍射(XRD)、拉曼(Raman)光谱、场发射扫描电镜(FESEM)、高分辨透射电镜(HRTEM)、四探针测试仪和电化学工作站分别研究了各阶段产物的物相、形貌、谱学、导电性和电容性能,证明了所制备的石墨烯薄膜具有良好的机械柔韧性和导电性能;同时,还对石墨烯薄膜的成膜及导电性能优化机理进行了探讨。Graphene oxide （CO） monolayer was firstly prepared from purified natural flake graphite by the modified Hummers method; and secondly deposited on copper foils by using electrophoretic deposition （EPD） me- thod, thus forming a EPD GO film; finally annealed in the atmosphere of Hz at high temperature of 800 ~C, thus ob- taining the repaired EPD-GO graphene film （TR-GE） with large scale and high conductivity. The related composition, morphology, spectroscopy, carrier conductivity, and capacitance were characterized by using by X-ray diffraction （XRD）, scanning electron microscopy （SEM）, Raman spectroscopy, transmission electron microscopy （TEM~, four- point probe test and cyclic voltammetry （CV） test. The results illuminated that the resultant TR-GE film owns high flexibility and conductivity. Additionally, one possible mechanism of covalently binding of graphene membranes was discussed for interpreting the forming course of TR-GE film and the optimization of carrier transmission.

关 键 词：石墨烯 电化学沉积 导电石墨烯薄膜 

分 类 号：O646[理学—物理化学] TQ127[理学—化学]