BYD Lithium Battery Anode Artificial Graphite Repair and Regeneration Equipment
This regeneration is accomplished through a four-step process: Oxygen-free Pyrolysis - Secondary Graphite, Acid Washing Impurity Removal - Primary Graphite, Carbon Coating - Regenerated Graphite, and Microwave Repair - High-Performance Graphite. The performance of graphite repaired and regenerated using this technology is now close to, or even exceeds, that of primary graphite.

1. Oxygen-free Pyrolysis: Pyrolysis of organic matter. Secondary graphite is obtained through flexible, non-mechanical force separation. The pyrolysis process preserves the integrity of the original graphite layer structure, its skeletal framework, electrical conductivity, and electrochemical composition, while simultaneously increasing the purity of the graphite powder.
2. Acid Washing Impurity Removal: Trace impurities in the pyrolyzed secondary graphite powder are removed using acid, achieving a graphite purity of ≥99.95%. This yields battery-grade primary graphite with high electrical conductivity, high active material content, and high cyclability.
3. High-Temperature Carbon Coating: A proportional amount of organic carbon source is added for high-temperature carbon coating. This process facilitates secondary graphitization of surface defects, lattice damage, and distortions on the primary graphite. It repairs and fills cracks and pores, reduces and optimizes the specific surface area of the graphite, and increases its tap density. The result is high-performance regenerated graphite with enhanced specific capacity, initial coulombic efficiency, cyclability, and rate capability.
4. Microwave Repair: Carbon is a non-polar molecule but a strong microwave-absorbing medium. Through high-temperature microwave repair, the crystal lattice structure, micro-cracks, and layered graphitization of the regenerated graphite are further repaired and reshaped. This increases the degree of graphitization, reduces the specific surface area, and improves the tap density, yielding graphite with even higher performance in terms of specific capacity, initial efficiency, cyclability, and rate capability. The performance of microwave-repaired graphite is now close to or even exceeds the specifications of primary graphite.

Anode Carbon-Coated Silicon

Flexible Powder Removal Equipment

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BYD Artificial Graphite Repair Finished Product BRC-01a