Overview
High-purity cobalt fluoride (CoF2) is a critical inorganic compound in advanced industrial applications. It is synthesized through the reaction of cobalt carbonate with hydrofluoric acid, followed by purification to achieve ≥99.9% purity. Its stability and electrochemical properties make it indispensable in energy storage and specialty chemicals. The compound is classified as a hazardous material due to its reactivity with acids and moisture. Industrial-grade CoF2 typically contains trace impurities, while high-purity variants are essential for precision applications like battery manufacturing.
Physical and Chemical Properties
Cobalt fluoride appears as a pink crystalline solid with a density of 4.43 g/cm³. It decomposes at 1,200°C without boiling and exhibits limited solubility in water. Its hygroscopic nature necessitates strict moisture control during storage. Chemically, CoF2 reacts vigorously with strong acids, releasing toxic hydrogen fluoride gas. It is stable under inert atmospheres but oxidizes slowly in air. These properties dictate its handling protocols and compatibility with other materials in industrial processes.
Main Applications
The primary use of high-purity cobalt fluoride is in lithium-ion battery cathodes, where it enhances energy density and cycle life. It serves as a precursor for layered oxide cathodes like LiCoO2, which power electric vehicles and portable electronics. In catalysis, CoF2 facilitates fluorination reactions in organic synthesis. It also acts as a colorant in ceramic glazes, producing distinctive blue hues. Emerging applications include optical coatings and nuclear reactor shielding due to its thermal neutron absorption cross-section.
Safety and Storage
Cobalt fluoride requires stringent safety measures. Inhalation or ingestion can cause respiratory and gastrointestinal damage, necessitating NIOSH-approved respirators and chemical gloves. Work areas must have fume hoods and emergency eyewash stations. Store in polyethylene-lined steel drums with desiccants, away from acids and oxidizers. Label containers clearly with GHS hazard pictograms (skull and crossbones, health hazard). Spills should be neutralized with calcium carbonate and disposed of as hazardous waste.
B2B Procurement Guide
When sourcing high-purity cobalt fluoride, prioritize suppliers with ISO 9001 certification and batch-specific analysis certificates (e.g., ICP-MS reports). Key specifications include purity (≥99.9%), particle size distribution (D50 <10µm for battery grades), and heavy metal content (<10ppm). Bulk purchases (100kg+) often qualify for 15-20% discounts. Consider incoterms like CIF for international shipments to mitigate logistics risks. Audit suppliers for HF handling capabilities, as this reflects production process control.
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