Negative electrode material powder modification machine, modification depolymerization machine, drying equipment

Release time:

2024-12-16 08:56

Source:

 

With the rapid development of new energy vehicles, energy storage, and other fields, the demand for lithium battery markets continues to grow. As one of the key materials for lithium batteries, graphite anodes have increasingly higher performance requirements. Coating modification machines, as important equipment for enhancing the performance of graphite anodes, have broad development prospects in the future..

Coating modification machines are not only suitable for artificial graphite and natural graphite but also have significant applicability for silicon-carbon anode materials. In the modification of silicon-carbon anodes, surface coating is a commonly used method. By preparing a single or multiple protective layers on the silicon surface through physical or chemical methods, it can suppress the volume expansion during the charging and discharging process of silicon and improve the conductivity of the material.

For artificial graphite, coating modification machines can use carbon materials such as high-temperature pitch for coating, improving surface defects and enhancing compatibility with electrolytes, thereby increasing initial capacity, efficiency, and cycling performance. For example, under the same process conditions, changing the coating sequence can produce artificial graphite anode materials with different performances. Anodes made with the front coating method exhibit high capacity performance, while those made with the back coating method have relatively excellent cycling performance.

For natural graphite, coating modification machines can use various carbon sources for coating, such as coal tar pitch, phenolic resin,PVA, and PVC, etc. These carbon sources can form a lithium-ion buffer layer on the graphite surface, addressing the issue of graphite volume expansion, while increasing the interlayer spacing of graphite flakes, reducing lithium-ion diffusion resistance, and improving the cycling stability and rate performance of graphite anodes.

For silicon-carbon anodes, methods such as wet chemical methods, mechanical ball milling, spray drying, and deposition techniques are typically used to prepare coating precursors, followed by heat treatment or direct synthesis of the coating structure. The coating layer can effectively suppress the volume expansion during the charging and discharging process of silicon, enhancing cycling performance. For example, using organic carbon sources and Si materials as precursors, a silicon-carbon coating structure can be prepared through spray drying, combined with pyrolysis processes, to obtain silicon-carbon anode materials with excellent performance.

To improve production efficiency and reduce costs, coating modification machines will tend towards multifunctional integrated designs. In addition to coating functions, they can also achieve various functions such as crushing, drying, and sorting, meeting the full-process production needs of graphite anode materials. For example,"Honeycomb mill" is mature and stable in the coating modification process, and can simultaneously achieve grinding, drying, sorting, and deagglomeration of wet ground filter cakes and slurries, providing an efficient solution for the industrial production of graphite anode materials.Promotegreater contributions to the development of the lithium battery industry.

* Note: Please be sure to fill in the information accurately and keep the communication unblocked. We will get in touch with you as soon as possible.

Submit Message

Previous Page

Ceramic powder ultrafine grinding machine ultrafine crusher ultrafine pulverizer

Graphite Coating Disperser Ultra-fine Disperser Active Coating Machine

Next Page

Related News