Alfa Chemistry can customize graphene-based silicon-carbon composites. For different battery systems, we select the appropriate graphene and use professional technology to make the appropriate composite material. We manufacture the best quality customized graphene-based silicon-carbon composites, which has a high service life and can meet the needs of customers.
Alfa Chemistry's Preparation Method
- Vapor Deposition
Chemical Vapor Deposition (CVD):
CVD is widely used in microfabrication processes to deposit materials in various forms (fibers, nanofibers, nanotubes, graphene).
Physical Vapor Deposition (PVD):
PVD is characterized by the process in which the material changes from the condensed phase to the gas phase and then back to the film condensed phase. The most common PVD processes are sputtering and evaporation.
- High Temperature Solid Phase Synthesis
In order to prevent the inert phase of Si/C, the reaction temperature is usually controlled below 1200 ℃.
- Mechanical Alloying (MA)
MA performs repeated cold welding, fracturing and re-welding on the mixed powder particles in a high-energy ball mill to produce a uniform material. Materials prepared by MA generally have smaller particles, a larger specific surface area and a more uniform structure.
- Sol Gel Method
The silicon salt is a precursor, which is hydrolytically condensed in the liquid phase, added with a carbon source, and then dried and sintered to prepare a silicon/carbon anode material.
Application Fields
The application fields of graphene dispersion include, but are not limited to, following:
Alfa Chemistry's Analytical Platforms
Our modification analytical platforms include, but are not limited to, following:
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Packaging, Pricing & Delivery
- Alfa Chemistry uses vacuum packaging to minimize damage on graphene products. Our product packaging is suitable and safe .
- Alfa Chemistry guarantees delivery within the specified time. We have free delivery in USA, and also we can deliver globally.
- Please contact us for a quote.
References
- Liu X. Y, et al. (2018). "Solutions for the Problems of Silicon-carbon Anode Materials for Lithium-ion Batteries." Royal Society Open Science. 5(6), 172370.
- Fukui H, et al. (2011). "Influence of Polystyrene/Phenyl substituents in Precursors on Microstructures of Si-O-C Composite Anodes for Lithium-ion Batteries." Journal of Power Sources. 196, 371-378.
