Fluorinated graphene is a derivative of graphene. Fluorinated graphene has a unique crystal structure, good stability and corrosion resistance, high mechanical strength and good biocompatibility. At present, the applications of fluorinated graphene are mainly concentrated in lithium batteries, photodetectors, modified resin materials, and medical fields.
In 2004, Geim of the University of Manchester in the United Kingdom reported on the discovery of single-layer fluorinated graphene in "Science", which opened the upsurge of fluorinated graphene research. At present, the research and development of fluorinated graphene is still in its infancy. The initial preparation method of fluorinated graphene is that scientists use XeF2 and plasma CF4 and SF6 to directly fluoride graphene. Subsequently, new synthetic methods continue to appear, which can be divided into chemical methods and physical methods. Chemical preparation of fluorinated graphene has the advantages of simple operation, controllable reaction, and large specific surface area, but the gas is expensive, has safety risks, and requires professional equipment. The laws of physics have low requirements on the environment and are mild and controllable, but the physical laws are small in size and cause serious damage. The chemical method is a method that utilizes the reaction between fluorinating agent, graphite and fluorine gas. Because F2 is expensive and difficult to operate, many studies have made improvements to it, that is, the reaction of graphene with XeF2 or CF4 at room temperature Preparation of fluorinated graphene. According to the "2019-2023 China Fluorinated Graphene Market Feasibility Study Report" issued by the New Sijie Industry Research Center, the current domestic chemical methods to study fluorinated graphene are mainly Tianjin Polytechnic University, Southwest University of Science and Technology, and Northwest Industrial University, Sichuan University, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Shanghai Institute of Organic Chemistry, Hunan Elementary Code Graphene Research Institute, Chinese Academy of Sciences, Ocean King Lighting Technology Co., Ltd., Hubei Zhuoxi Fluoride Co., Ltd., Shandong Zhongshan Optoelectronic Materials Co., Ltd. Wait. The physical method is divided into mechanical exfoliation method and liquid phase exfoliation method, that is, fluorinated graphene is prepared by liquid phase exfoliation or mechanical exfoliation of fluorinated graphite. There are few domestic institutions that conduct physical preparation of fluorinated graphene, mainly including the Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences. New Thinking Investment analysts pointed out that fluorinated graphene has a wide range of potential applications and has good development value. In the field of lithium batteries, fluorinated graphene is considered to be an ideal electrode material for lithium-ion batteries. The use of fluorinated graphene can not only improve the electrochemical performance of lithium-ion batteries, but also is expected to improve the thermal conductivity of electrode materials and even the entire battery. In the field of photodetectors, fluorinated graphene can be transferred to different substrates. If fluorinated graphene is transferred to a flexible substrate, a flexible photodetector device with the characteristics of bendability, impact resistance and light weight can be realized. . In the medical field, fluorinated graphene can be used in biosensors, tissue engineering, bioimaging, medical diagnosis and treatment, etc.
