A pyrolytic carbon layer was deposited on spherical graphite particles by atmospheric-pressure chemical vapor deposition of benzene. The specific surface area decreased from 6.4 m²·g⁻¹ to 2.2 m²·g⁻¹ and the powder tap density reached 0.98 g·cm⁻³ at a benzene concentration of 20% in the nitrogen mixture. The sample prepared at this concentration showed a coulombic efficiency of 91% and a discharge capacity of 367 mAh·g⁻¹.
Use Cases
- Benchmarking coating performance based on specific surface area and tap density measurements.
- Modeling capacity retention based on discharge rate data comparing coated and pristine graphite.
- Optimizing chemical vapor deposition processes based on the reported fourfold reduction in process time.
Strengths
- Reports specific performance metrics, including a discharge capacity of 367 mAh·g⁻¹ and a coulombic efficiency of 91%.
- Compares key material properties before and after coating, such as a surface area reduction from 6.4 m²·g⁻¹ to 2.2 m²·g⁻¹.
- Includes a direct performance comparison, showing coated graphite retained 329 mAh·g⁻¹ at a 2C rate while pristine graphite dropped to ~60 mAh·g⁻¹.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
Provenance
- Source
- Harvard Dataverse
- Collection Method
- Atmospheric-pressure chemical vapor deposition of benzene on spherical graphite particles.
- Freshness
- Last updated 2026-06-09 15:51:22; freshness should be verified.