Graphite anode material powder dryer, powder disperser, activation equipment

Release time:

2025-04-08 09:47

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As the core carrier of energy density in lithium-ion batteries, negative electrode materials account for approximately 10%-15% of the total battery cost. Currently, in mainstream product systems, artificial graphite, with its excellent rate performance, is widely used in the power batteries of new energy vehicles and high-end electronic devices; while natural graphite, with its cost advantage, dominates the consumer electronics market.

For performance optimization of graphite materials, asphalt-based coating technology has become an industry-recognized effective approach. The asphalt coating layer, processed through a special process, can form a uniform amorphous carbon structure on the surface of graphite, effectively filling the micro-pore defects on the material surface, significantly improving the reversible capacity and cycle life of the electrode material. This surface modification technology can also improve the low-temperature performance and rate charge-discharge capability of the battery by optimizing the material interface characteristics, improving electrolyte compatibility, and reducing the specific surface area of the material.

In terms of manufacturing process innovation, the honeycomb grinding system has achieved a dual breakthrough in material processing efficiency and product performance. This equipment can precisely control the mixing ratio and reaction process of graphite powder and coating agents (asphalt, resin, etc.). By forming a dense protective coating on the material surface, it effectively inhibits the co-intercalation of the electrolyte, reducing the irreversible capacity to an industry-leading level. At the same time, this structure enhances the structural stability of the material, significantly reducing particle pulverization and interlayer delamination during the charge-discharge process.

The technical advantages of this equipment also include: Improved Tap Density Technology: Through pore filling optimization, the tap density of the material is increased ； Specific Surface Area Control: The specific surface area of the material can be stably controlled within the required range ； Enhanced Thermal Stability: The material's initial decomposition temperature can be increased to within the processing requirements.

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