CVD Silicon Anode Production Line

01. Carbonization zone
02. Mixed zone
03. Crushing zone
04. Drying area
05. Compression zone
06. Active zone
07. Acid washing area
08. Centrifugal zone
09. Airflow crushing zone
10. Silane deposition zone
11. Carbon coated area
12. Demagnetized screening partition
13. Packaging area
CVD Silicon Anode Production Line

Solution Overview

Vapor deposition silicon carbon anode material is an anode material formed by uniformly loading silicon (Si) in the form of nanoscale particles, thin films, or nanowires onto the surface or interior of a carbon substrate (such as graphite, carbon nanotubes) through chemical vapor deposition (CVD) or physical vapor deposition (PVD) techniques, and coating it with a carbon layer to form a stable "silicon carbon" composite structure. Its core advantage is the more uniform nanoscale dispersion of silicon and stronger bonding at the silicon-carbon interface, which can maximize the high capacity of silicon (theoretical 4200 mAh/g) and suppress volume expansion (through carbon matrix buffering). It is an important technical route for mass production of high-energy density silicon carbon anodes. The production line is designed around "vapor phase silicon deposition, carbon coating/composite, and structure control".
  • 1800

    mAh

    Capacity:≥
  • 90

    %

    First-effect:≥
  • 15%-30

    %

    Carbon content:≥
  • Solution Overview
  • Solution Overview

Parameters

Parameter Name Typical Range Test Method
Silicon Core Content 45%-55% TG Thermogravimetric Analysis
Carbon Layer Content 15%-30% TEM-EDS Mapping
Oxygen Content ≤5% XPS Depth Profiling
Metal Impurities (Fe/Ni) ≤20 ppm GD-MS Glow Discharge Mass Spectrometry
Hydrogen Residue ≤0.1% Gas Chromatography
First Discharge Capacity 1800-2500mAh/g 0.1C, 0.005-2.0V
First Coulombic Efficiency 88-95% 0.1C, 0.005-2.0V
Cycle Life ≥1000 1C, 100% DOD
Volume Expansion Rate 15-25% Electrode Thickness Measurement
Rate Capability 5C capacity ≥1600 mAh/g 5C Discharge
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