The effect of nanostructure on the thermal properties of fluorinated carbon nanofibres

Solvothermal synthesis of superhydrophobic hollow carbon nanoparticles from a fluorinated alcohol

“…It is widely used as an electrode in lithium batteries, 2 as a solid lubricant, and as an additive for weather resistant paint. 3 Fluorination of carbon-based materials such as carbon black, 4 carbon fibers, [5][6][7][8][9] single walled carbon nanotubes, [10][11][12] multiwalled carbon nanotubes, [13][14][15][16] and graphene 14,[17][18][19][20][21][22] has been explored extensively in recent decades. There are several main methods for the preparation of fluorocarbons: direct fluorination in F 2 gas at elevated temperatures, sometimes in the presence of HF or IF 5 (at 150-600 °C); 16 radio-frequency plasma treatment in CF 4 gas; 23 chemical vapor deposition from perfluorohexane at 100-500 °C, 6 or chemical vapor deposition in CF 4 plasma at room temperature; 19 decomposition of xenon difluoride (XeF 2 ); 18 mechanical exfoliation of graphite fluoride; 24 arc discharge between graphite fluoride-containing graphite rods; 14 coating with fluorinated silane; 25 heating carbon in TbF 4 ; 26 reduction of graphene oxide in HF, 27 or the use of perfluoropolyether peroxide.…”

Fundamentals of Li/CFxbattery design and application

“…For example, controlled fluorination with homogenous and gradual F diffusion can fluorinate inner tubes, while direct fluorination results in unfluorinated conductive carbon cores. 165,166 This means that fluorination methods play an important role on the structure of formed CF x . 167 Ahmad et al compared a series of CF x synthesised by dynamic fluorination (D-435), static fluorination (S-420) and controlled fluorination (C-480), and concluded that the fluorination methods influenced the distributions of fluorinated nanodomains, which affected the flow of electrons and the diffusion of Li + and F À ions during electrochemical processes (Fig.…”

“…For example, controlled fluorination with homogenous and gradual F diffusion can fluorinate inner tubes, while direct fluorination results in unfluorinated conductive carbon cores. 165,166…”

Advances in tailoring the water content in porous carbon aerogels using RT-pulsed fluorination

“…In other terms, the reaction between F2 and CA is perfectly controllable in terms of the reacting quantity of F2, and more importantly to discern when the F2-CA reaction begins and when it ends. This is important because it highlights the low synthesis cost of this method, since the amount of F2 used to fluorinate is perfectly controlled (unlike the dynamic fluorination that operates under a flux of F2) and it avoids any decomposition phenomenon of the carbon into volatile species such CF4 and C2F6 [33,59,60], as this method operates at room temperature. The fluorination modifies the texture of the CAs by increasing the pore size and decreasing the specific surface area, but the textures remain appropriate for proton exchange membrane fuel cell (PEMFC) applications as it was shown in recent studies [22,55].…”