How is the anode material carbon-coated silicon powder produced?

How is the anode material carbon-coated silicon powder produced? 

The preparation process of silicon carbon anode material includes ball milling, high temperature cracking, chemical vapor deposition, sputtering deposition and evaporation. Therefore, a variety of silicon-carbon material structures have been produced, but they are all designed with the idea of increasing the capacity of lithium batteries and reducing the expansion and fragmentation of silicon particles.

Overview of Anode Material Carbon-coated Silicon Micropowder

The coated silicon-carbon anode materials are usually carbon-coated silicon materials with different nanostructures. This material uses silicon as the main body to provide reversible capacity, and the carbon layer is mainly used as a buffer layer to reduce the volume effect and enhance conductivity. The carbon coating is usually amorphous carbon. Silicon anode materials have problems such as low cycle life, large volume changes, and continuous formation of SEI film. Silicon carbon anode materials can effectively improve these problems. Therefore, silicon-carbon anode materials will be the focus of the development of cathode materials. In the future, a complete surface coating is important to prevent silicon from contacting the electrolyte, leading to the depletion of the thick SEI film.

The mechanism of carbon coating is that the volume expansion of Si is shared by graphite and amorphous coating, which avoids the expansion of the negative electrode material due to huge volume changes and stress during the intercalation and dilithium process. The role of the carbon coating is: (1) Restrict and buffer the volume expansion of the active center; (2) Prevent the agglomeration of nano-active particles; (3) Prevent the electrolyte from penetrating into the center, maintain a stable interface and SEI (4) Contribution of silicon materials High specific capacity, carbon material contributes high conductivity.

Carbon-coated silicon powder has the characteristics of high capacity, high initial efficiency, long cycle, low expansion, excellent processing performance and rate performance, and it is well matched with the existing graphite anode system.

The preparation process of silicon carbon anode material includes ball milling, high temperature cracking, chemical vapor deposition, sputtering deposition and evaporation. Therefore, a variety of silicon-carbon material structures have been produced, but they are all designed with the concept of increasing the capacity of lithium batteries and reducing the expansion and fragmentation of silicon particles.

Application of carbon-coated silicon powder anode material

Carbon-coated silicon powder is used in cylindrical batteries, flexible packaging batteries and aluminum shell batteries.

As a new type of lithium ion battery anode material, silicon carbon anode can play a more significant role in improving battery energy density than the current graphite anode. However, due to its high application threshold, it is still in the early stage of industrialization. At present, the application prospects of silicon carbon anode materials are getting brighter and brighter.

Anode material carbon-coated silicon powder price

The price of carbon-coated silicon fume varies randomly with factors such as production costs, transportation costs, international conditions, exchange rates, and supply and demand in the carbon-coated silicon fume market. Tanki New Materials Co., Ltd. aims to help various industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full set of customized services. If you are looking for carbon-coated silicon powder material, please feel free to contact to get the latest price of carbon-coated silicon powder.

Suppliers of Anode Material Carbon-coated Silicon Micropowder

As a global carbon-coated silicon micropowder supplier, Tanki New Materials Co., Ltd. has extensive experience in the performance, application and cost-effective manufacturing of advanced engineering materials. The company has successfully developed a series of powder materials (titanium silicide, tantalum silicide, zirconium silicide, etc.). High-purity targets, functional ceramics and structural devices, and provide OEM services.