碳材料解聚设备 干燥设备 超细分散机

Release time:

2025-07-11 08:27

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Carbon materials, as fundamental and important materials, are widely used in numerous fields, including energy storage, electronic devices, and aerospace. However, the shortcomings of raw carbon materials in certain properties limit their performance in some high-end applications. For example, in the application of lithium-ion battery anode materials, graphite-based carbon materials have good conductivity and a relatively stable charge-discharge platform, but their compatibility with solvents is poor, and their ion diffusion performance is not ideal, making it difficult to form a stable solid electrolyte interphase (SEI). Graphite layers are also prone to slippage, leading to unsatisfactory high-current rate performance and cycle life. Although amorphous carbon materials can compensate for some of the shortcomings of graphite materials in terms of rate performance, their overall performance when used alone is still inferior to graphite.

To address these issues, material modification has become a key approach, and carbon coating is one of the most common modification methods in the field of new energy materials. Carbon coating, simply put, is to coat the surface of a carbon material with a layer of amorphous carbon, thus forming a core-shell structure. This amorphous carbon shell has a significant effect; it can effectively prevent the electrolyte from embedding into the anode material, avoiding the graphite layer peeling caused by solvent molecule embedding. At the same time, the larger interlayer spacing of amorphous carbon can improve the diffusion performance of lithium ions, forming a buffer layer of lithium ions on the outer surface of the graphite, significantly improving the rate performance of the material. In addition, this surface coating method can also constrain the volume expansion of the active centers of the buffer electrode material, prevent the agglomeration of nano-active particles, prevent the electrolyte from penetrating into the active centers, and maintain the stability of the electrode material interface.

In the process of carbon coating, the coating modification equipment plays an irreplaceable role. Taking the honeycomb mill as an example, this is a continuous processing equipment that can simultaneously handle drying, depolymerization, modification, and surface spheroidization processes, with a coating rate of 99.2%, and a flexible processing capacity range to meet the needs of different scales of production.

The entire continuous depolymerization and modification process of the honeycomb mill is operated under negative pressure, with advantages such as high degree of continuity, pre-liquefaction and atomization feeding of modifiers, automatic metering of feeding, adjustable system temperature, controllable feeding speed, finished product airflow transportation, and no dust pollution. It not only enables large-scale production but is also simple to operate, stable in operation, and requires low labor intensity.

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