多层石墨烯插层化合物的制备及电导率调控研究  

Preparation of Laser-Induced Graphene Intercalation Composites and Control of Electrical Conductivity

作　　者：张传林 李年 张淑东 ZHANG Chuanlin;LI Nian;ZHANG Shudong

机构地区：[1]重庆交通大学机电与车辆工程学院,重庆400000 [2]中国科学院固体物理研究所,安徽合肥230031

出　　处：《化工设计通讯》2024年第2期113-117,共5页Chemical Engineering Design Communications

基　　金：重庆市技术创新与应用发展重点专项(鲁渝科技协作计划项目,cstc2020jscx-lyggX0007);重庆市研究生导师团队建设项目(JDDSTD2019007);重庆市研究生联合培养基地(JDLHPYJD2020032)。

摘　　要：由于多层石墨烯的低载流子密度限制了其电导率,为了提升石墨烯电导率,通过两温区气相插层方法制备了基于激光诱导石墨烯(LIG)的一阶与二阶石墨烯插层化合物,利用XRD、扫描电子显微镜、拉曼光谱等对插层化合物进行形貌和结构表征,用标准的四探针法测试了电导率。结果表明该化合物很好的保留了LiG的三维多孔结构,为电子传导提供了快速通道;其电导率由纯LIG的634 S/m提高到一阶插层的943 S/m和二阶插层的1 306 S/m,且插层过后仍然能够较完整的转移到其他基面,结构没有破坏。插层过程是由插层剂从中心向边缘逐渐扩散形成的,插层剂分子在插层过程中的剧烈运动,LiG表面发生破损。Due to the low carrier density of multi-layer graphene,its conductivity is limited.In order to improve the conductivity of graphene,this paper prepared first and second order graphene intercalation compounds based on laser induced graphene(LIG)using a two temperature zone gas phase intercalation method.The morphology and structure of the intercalation compounds were characterized by XRD,scanning electron microscopy,Raman spectroscopy,and other methods.The conductivity was tested using a standard four probe method.The results indicate that the compound retains the three-dimensional porous structure of LiG well,providing a fast channel for electron conduction;Its conductivity has increased from 634 S/m of pure LIG to 943 S/m of first-order intercalation and 1306 S/m of second-order intercalation,and after intercalation,it can still transfer to other substrates relatively intact without structural damage.The intercalation process is formed by the gradual diffusion of the intercalating agent from the center to the edge,and the intense movement of the intercalating agent molecules during the intercalation process causes damage to the LiG surface.

关 键 词：石墨烯插层化合物 激光诱导石墨烯 插层反应 

分 类 号：TB333[一般工业技术—材料科学与工程]