Overview
Fine particle graphite is a processed form of natural or synthetic graphite, characterized by its small particle size (typically <10 microns) and high purity. It retains the intrinsic properties of graphite, including excellent electrical and thermal conductivity, lubricity, and chemical resistance. Due to its fine particle size, it offers superior dispersibility and surface area, making it ideal for applications requiring uniform distribution, such as conductive coatings or battery electrodes. It is widely used in energy storage, metallurgy, and industrial lubrication sectors.
Physical and Chemical Properties
Fine particle graphite exhibits a layered hexagonal crystal structure, contributing to its anisotropic properties. It is chemically inert, resistant to most acids and alkalis, and stable at high temperatures (up to 3,000°C in inert atmospheres). Its electrical conductivity ranges from 10^4 to 10^5 S/m, depending on purity and orientation. The material also demonstrates low friction coefficients (0.1–0.2), making it a preferred solid lubricant in high-temperature or vacuum environments.
Main Applications
In lithium-ion batteries, fine particle graphite serves as an anode material due to its high capacity and cycling stability. It is also used in conductive paints, polymer composites, and printed electronics for its dispersibility and conductivity. Other applications include refractory materials (e.g., crucibles), dry lubricants for machinery, and greases for extreme conditions. Its thermal stability makes it suitable for aerospace and nuclear industries.
Safety and Storage
While graphite is non-toxic, fine particles pose inhalation risks (dust exposure may cause respiratory irritation). Work areas should have adequate ventilation, and PPE (masks, gloves) is recommended during handling. Store in sealed containers away from strong oxidizers (e.g., chlorates, peroxides) to prevent combustion. Avoid moisture to maintain powder flowability and prevent clumping.
B2B Procurement Guide
Key procurement criteria include purity (≥99% carbon), particle size distribution (D50 <10 microns), and ash content (<0.5%). Suppliers should provide material safety data sheets (MSDS) and certificates of analysis (CoA). Bulk pricing is common for industrial buyers, with discounts for long-term contracts. Consider regional logistics, as graphite is often sourced from China, Brazil, or Canada. Verify supplier compliance with ISO 9001 or similar quality standards.
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