Spherical Natural Graphite Anode Material
CAS Number: 7782-42-5
Spherical natural graphite (SNG) anode material is produced by shaping and surface coating natural flake graphite to achieve high tap density, excellent cycle stability, and superior rate performance for lithium-ion battery anodes. It is the dominant commercial anode material for consumer and EV batteries, offering cost advantages over synthetic graphite.
Technical Specifications
| D50 (μm) | 14–18 |
| appearance | Black spherical powder |
| purity (%) | ≥99.9 |
| tap density (g/cm³) | 0.90–1.10 |
| BET surface area (m²/g) | 2.5–4.5 |
| first-cycle Coulombic efficiency (%) | ≥93 |
Applications
- Consumer Li-ion battery (cylindrical 18650/21700) anode
- EV pouch and prismatic cell anode active material
- Blended natural/synthetic graphite anode
- Graphite/silicon composite anode base material
- Cylindrical 4680 large-format cell anode
Key Features
- Spherical morphology achieves high tap density (0.9–1.1 g/cm³) for high-volumetric-energy anodes
- Low BET (2.5–4.5 m²/g) minimizes irreversible Li consumption in first-cycle SEI formation
- Carbon-coated surface reduces side reactions and improves first-cycle Coulombic efficiency
- Long natural flake particle origin provides high degree of graphitization (>99.9% purity)
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