Discharge characteristics of graphite fluorides prepared via graphite intercalation compounds in nonaqueous lithium cells |
| |
| Affiliation: | 1. CAS Key Laboratory of Biofuels, Public Laboratory, Qingdao Key Laboratory of Functional Membrane Material and Membrane Technology, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, PR China;2. School of Transportation Engineering, Shandong Jianzhu University, Jinan, 250101, PR China;3. College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao, 266042, PR China;1. Institute of Clean Coal Technology, East China University of Science and Technology, Shanghai, 200237, PR China;2. State Key Laboratory of High-efficiency Coal Utilization and Green Chemical Engineering, Ningxia University, Yinchuan, 750021, PR China;3. Department of Environmental Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, 226-8503, Japan;1. Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, China;2. College of Physics and New Energy, Xuzhou University of Technology, Xuzhou 221018, China;3. School of Energy and Mechanical Engineering, Nanjing Normal University, Nanjing 210042, China;1. College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China;2. School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China;3. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China |
| |
| Abstract: | Two types of graphite fluorides (C2F)n and (CF)n were prepared by refluorination of thermally decomposed ionic graphite intercalation compounds of fluorine. Discharge behavior and effect of the heat treatment of graphite fluoride were investigated. This method drastically decreased the reaction time compared with the direct fluorination of graphite. OCV of (C2F)n was higher by 0.3 V than that of the conventionally prepared one, however, overpotential was the same at the constant current density of 0.5 mA cm−2. On the other hand, the same OCV and less overpotential by 0.3 V were observed for (CF)n. The heat treatment of these samples in fluorine atmosphere at higher temperatures increased the discharge capacity and provided a more flat discharge potential. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
