Overview
Conductive Special Flake Graphite is a naturally occurring or synthetically produced form of graphite characterized by its flat, plate-like structure. Its high crystallinity and layered arrangement of carbon atoms enable exceptional electrical and thermal conductivity, making it indispensable in industrial applications. Unlike amorphous graphite, flake graphite retains its structural integrity under high temperatures and pressures, which is critical for demanding environments such as battery anodes and refractory linings. The material is typically mined from ore deposits and processed to achieve desired purity levels.
Physical and Chemical Properties
Flake graphite exhibits a unique combination of properties, including low hardness (1-2 on the Mohs scale), high thermal stability, and resistance to most chemicals. Its layered structure allows for easy cleavage, contributing to its lubricating properties. The material’s electrical conductivity ranges from 10,000 to 50,000 S/m, depending on purity and orientation. It is also anisotropic, meaning its conductivity and thermal resistance vary along different crystal axes. These traits are leveraged in applications like heat sinks and conductive composites.
Main Applications
The primary use of conductive flake graphite is in lithium-ion batteries, where it serves as an anode material due to its ability to intercalate lithium ions. It also enhances the performance of alkaline batteries and fuel cells. Other applications include high-temperature lubricants, refractory bricks for furnaces, and conductive coatings for electronic components. In the metallurgical industry, it is used as a carbon raiser in steel production and in crucibles for molten metal handling.
Safety and Storage
While graphite is generally non-toxic, fine powder can pose inhalation risks, necessitating dust masks and proper ventilation in workplaces. It is also combustible in powder form, requiring storage away from open flames. Long-term storage should avoid humid environments to prevent oxidation. Bulk shipments are typically packed in moisture-proof bags or containers to maintain purity and prevent contamination.
B2B Procurement Guide
When sourcing conductive flake graphite, prioritize suppliers that provide certified analysis reports for purity (measured by carbon content), particle size distribution (e.g., 50–200 mesh), and ash content. Specifications should align with end-use requirements, such as sulfur limits for battery applications. Pricing depends on factors like flake size (larger flakes command premiums) and processing methods (e.g., acid washing for higher purity). Establish long-term contracts to mitigate price volatility, especially for battery-grade material.
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