About Tantalum Foil
Tantalum Foil (CAS 7440-25-7) is an electrode and current-collector material for battery cells. NanoLithium supplies it for current collectors, electrode substrates and cell assembly. Full specifications are shown below, and bulk or custom quantities can be quoted on request. We ship from Canada to the USA, Europe, South Korea and worldwide.
Tantalum Foil Properties (Theoretical)
| Molecular Weight | 180.94 |
|---|---|
| Appearance | Silvery-gray solid |
| Melting Point | 3017 °C |
| Boiling Point | 5458 °C |
| Density | 16.69 g/cm3 (20 °C) |
| Solubility in H2O | N/A |
| Crystal Phase / Structure | α: body-centered cubic (bcc) / β: tetragonal |
| Electrical Resistivity | 131 nΩ·m (20 °C) |
| Electronegativity | 1.5 Paulings |
| Heat of Fusion | 36.57 kJ/mol |
| Heat of Vaporization | 753 kJ/mol |
| Poisson’s Ratio | 0.34 |
| Specific Heat | 140 J/kg·K |
| Thermal Conductivity | 57.5 W/m·K |
| Thermal Expansion | 6.3 µm/m·K |
| Vickers Hardness | 870–1200 MPa |
| Young’s Modulus | 186 GPa |











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