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Homogeneous Fluorine Distribution in Graphene through Thermal Dissociation of Molecular F-2: Implications for Thermal Conduction and Electrical Insulation

文献类型：期刊论文

作者Huang, Benyuan1; Liu, Yang1; Duan, Jiawei1; Li, Xin1; Li, Yulong1; Qin, Rui1; Wang, Xu1; Zhuang, Yongbing2; Liu, Xiangyang1
刊名ACS APPLIED NANO MATERIALS
出版日期2022-05-27
卷号5期号:5页码:6770-6780
关键词graphene atomic fluorination fluorination mechanism fluorine distribution thermal conduction
DOI10.1021/acsanm.2c00768
英文摘要Direct fluorination utilizing F-2/N-2 was confirmed to be one of the most efficient approaches to decorate graphene. The conventional opinion holds the view that direct fluorination is a molecular fluorination process, which often makes for the preparation of fluorinated graphene (FG) with heterogenous fluorine distribution. Herein, a fluorination strategy with an atomic fluorination mechanism was developed to modify graphene through thermal predissociation of molecular fluorine into atomic fluorine. By means of theoretical simulation, the thermal dissociation process of F-2 was disclosed, and dissociation temperature was determined to be about 140-180 degrees C. Consequently, an ingenious thermal annealing at 180 degrees C was employed to splitting F-2 into fluorine atoms before the fluorination reaction. Distinguished from the traditional molecular fluorination, atomic fluorination using fluorine atoms enables the preparation of FG with a higher fluorination degree and relatively homogeneous fluorine distribution because of the zero-energy barrier reaction, which was validated by aberration-corrected transmission electron microscopy directly. Furthermore, FG with homogeneous fluorine distribution possesses several advantages over the heterogenous fluorine distribution samples including higher thermal stability, higher thermal conductivity, and better electrical insulation, thereby demonstrating the possibility of their application in the field of thermal conduction and electrical insulation for microelectronics. We believe that this unique fluorination approach and corresponding mechanism can be extended to other carbon materials.
WOS关键词MAGNETIC-PROPERTIES ; ENERGY ; CHEMISTRY
资助项目National Natural Science Foundation of China[52003172] ; National Natural Science Foundation of China[51873113] ; Fundamental Research Funds for the Central Universities
WOS研究方向Science & Technology - Other Topics ; Materials Science
语种英语
WOS记录号WOS:000833967000081
出版者AMER CHEMICAL SOC
资助机构National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities
源URL[http://ir.ipe.ac.cn/handle/122111/54359]  
专题中国科学院过程工程研究所
通讯作者Liu, Yang; Liu, Xiangyang
作者单位1.Sichuan Univ, Coll Polymer Sci & Engn, State Key Lab Polymer Mat & Engn, Chengdu 610065, Peoples R China
2.Univ Chinese Acad Sci, Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Huang, Benyuan,Liu, Yang,Duan, Jiawei,et al. Homogeneous Fluorine Distribution in Graphene through Thermal Dissociation of Molecular F-2: Implications for Thermal Conduction and Electrical Insulation[J]. ACS APPLIED NANO MATERIALS,2022,5(5):6770-6780.
APA Huang, Benyuan.,Liu, Yang.,Duan, Jiawei.,Li, Xin.,Li, Yulong.,...&Liu, Xiangyang.(2022).Homogeneous Fluorine Distribution in Graphene through Thermal Dissociation of Molecular F-2: Implications for Thermal Conduction and Electrical Insulation.ACS APPLIED NANO MATERIALS,5(5),6770-6780.
MLA Huang, Benyuan,et al."Homogeneous Fluorine Distribution in Graphene through Thermal Dissociation of Molecular F-2: Implications for Thermal Conduction and Electrical Insulation".ACS APPLIED NANO MATERIALS 5.5(2022):6770-6780.

入库方式： OAI收割

来源：过程工程研究所

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