Silicon Carbon Precursor
Silicon carbon precursors are one of the key raw materials for producing silicon-carbon anode materials, which largely determines the performance and cost of silicon-carbon anodes.
In the field of lithium-ion batteries, silicon carbon anodes have attracted much attention due to their high energy density.ACC can provide silicon carbon precursors of different raw materials for the production of silicon carbon anodes with different performance and applications.
ACarbon® silicon carbon precursors include coconut shell based, bamboo based silicon carbon precursors and resin based silicon carbon precursors.
APPLICATIONS
Coconut Shell Based Silicon Carbon Precursor
Coconut shell based silicon carbon precursor is the silicon carbon precursor that is currently closest to industrialization.
Coconut shell has a natural porous structure, which can be converted into a higher specific surface area and porosity, which is conducive to the transmission and storage of ions; the stable structure provides good chemical stability; compared with other expensive precursor materials, coconut shell has a lower cost and is economical.
However, the coconut shell in China for porous hard carbon precursor production mainly relies on the imports, and its output is insufficient to meet the needs of battery industrialization; so there is a certain degree of risk for consistent raw material supply.
| Specifications | Values | Units |
|---|---|---|
|
Specific Surface Area |
1800 min. |
m²/g |
|
Pore Volume |
0.8 min. |
cm³/g |
|
Moisture |
5 max. |
% |
|
Ash Content |
1 max. |
% |
|
pH |
6-8 |
– |
|
Particle Size |
D50 5-7 or customized |
μm |
Bamboo Based Silicon Carbon Precursor
Bamboo based silicon carbon precursor has a very good development prospect as a new potential material.
As a renewable resource, China is the country with the richest bamboo resources in the world, which provides reliable raw material and cost guarantees for the large-scale production and application of bamboo based silicon carbon precursors.
Bamboo has a natural fiber structure and can be converted into a silicon carbon precursor with specific pores and microstructures, which is conducive to the transmission and storage of ions; the chemical components in bamboo have good compatibility with silicon and carbon, which is convenient for forming a stable complex during the production process.
| Specifications | Values | Units |
|---|---|---|
|
Specific Surface Area |
1600 min. |
m²/g |
|
Pore Volume |
0.8 min. |
cm³/g |
|
Moisture |
5 max. |
% |
|
Ash Content |
1 max. |
% |
|
Particle Size |
D50 5-7 or customized |
μm |
Resin Based Silicon Carbon Precursor
Resin based silicon carbon precursor is a kind of silicon carbon precursor produced from industrial products, which has the following characteristics:
① Wide sources of raw materials: resin based precursor raw materials are abundant, including phenolic resin, furfural resin and other types, which can provide a wide range of choices.
② Controllable production process: the molecular structure of the resin-based precursor is relatively simple and controllable. The relevant molecular structure can be designed according to needs to accurately construct adjustable pore structures and active sites at the molecular level.
③ Excellent performance: the silicon carbon anode being produced by resin based precursors has excellent rate and cycle stability, high gram capacity, good electrochemical performance and good consistency.
| Specifications | Values | Units |
|---|---|---|
|
Specific Surface Area |
1700-2200 |
m²/g |
|
Pore Volume |
0.9 min. |
cm³/g |
|
Moisture |
5 max. |
% |
|
Ash Content |
1 max. |
% |
|
Particle Size |
D50 5-7 or customized |
μm |
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