| Graphene | Carbon nanotube | Fullerene | Graphite |
Dimensions | 2 | 1 | 0 | 3 |
Hybridization | sp2 | Mostly sp2 | Mostly sp2 | sp2 |
Hardness | Highest (for single layer) | High | High | High |
Tenacity | Flexible, elastic | Flexible, elastic | Elastic | Flexible, non-elastic |
Experimental Specific surface area (m2·g–1) | ~1500 | ~1300 | 80 - 90 | ~10 - 20 |
Electrical conductivity (S·cm–1) | ~2000 | Structure- dependent | 10–10 | Anisotropic: 2 - 3 × 104*, 6† |
Thermal conductivity (W·m–1·K–1) | 4840 - 5300 | 3500 | 0.4 | Anisotropic: 1500 - 2000*, 5 - 10† |