Description
Other Name: Fluorinated Carbon, Carbon Fluoride
CAS Number: 51311-17-2
Chemical Formula: (CFx)n
F/C Ratio: 0.5-1.2
Graphite fluoride is a kind of graphite intercalation compound prepared by direct reaction of carbon and fluorine. Its chemical structure can be expressed by (CFx) n. Where x is an indefinite value, the value is 0 < x < 1.25.
Graphite fluoride is a new type of functional materials, which belongs to the deep processing product of graphite. It has low surface free energy and good thermal and chemical stability, so it has unique lubricity, hydrophobicity and oil repellency, and excellent chemical and thermal stability. Therefore, it can be used as solid lubricant, water and oil repellent, antifouling agent, etc. In addition, graphite fluoride can be used as the active material of battery, which can increase the storage life of battery and can be used to manufacture high-energy primary battery. Graphite fluoride has many excellent properties, so it is widely used in military, aviation, aerospace, metallurgy, mechanical and electrical, chemical and other fields.
The properties of Graphite Fluoride vary with the ratio of C to F in the formula. CF (1-1.25) is called high fluorinated graphite, while CF (0.5-0.99) is called low fluorinated graphite. With the increase of fluorine content, the color of CF (0.5-0.99) changes from gray black to snow white. High fluorinated graphite has excellent thermal stability, it is an electrical and thermal insulator, free from corrosion by strong acid and alkali, and has ultra-high lubricating performance. Low fluorinated graphite has a gray black appearance and poor thermal stability, usually it is not used as lubricant.
Technical Index
Items TPD-GF60 TPD-GF70 TPD-GF80 TPD-GF90 TPD-GF100
Appearance Ash black Offwhite Offwhite Milk white White
F(wt.%)
44-49 50-53 54-56 57-59 ＞62
F/C Ratio 0.50-0.60 0.63-0.71 0.73-0.80 0.83-0.90 ＞1.0
Density, g/cm31.90-2.10 2.10-2.20 2.30-2.40 2.50-2.60 2.50-2.70
Bulk Density, g/cm30.9-1.0 0.8-0.9 0.7-1.0 0.5-0.7 0.5-0.7
Electrical Resistivity, Ω.cm ＜1.60 1.60-246 7.9x105＞1.0x109＞1.0x109
Average Particle Size 1-20 1-15 1-50 1-15 1-15
Decomposition Temperature, ℃ ＞400 ＞400 ＞400 ＞400 ＞400
Applications
1. High energy density cathode material in lithium batteries
2. Lubricant additive
3. Weather-resistant additive for paints
4. Oxidizing agent and combustion modifier in rocket propellants and pyrolants
