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This is a conceptual page intended for development purposes. The content is placeholder information that has not been verified. | |||
Overview | |||
== Overview == | == Overview == | ||
Graphite is a carbon-based material that is often used as a negative electrode active material, especially in Li-ion batteries. | Graphite is a carbon-based material that is often used as a negative electrode active material, especially in Li-ion batteries. | ||
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=== Qualitative Properties === | === Qualitative Properties === | ||
{| class="wikitable" | |||
|- | |||
!Property!!Value | |||
|- | |||
|[[Material Type]]||Graphite | |||
|- | |||
|[[Category]]||Native Mineral | |||
|- | |||
|[[Crystal System]]||Hexagonal or Rhombohedral | |||
|- | |||
|[[Crystal Habit]]||Tabular, six-sided foliated masses; granular to compacted masses | |||
|- | |||
|[[Color]]||Iron-black to steel-gray | |||
|- | |||
|[[Luster]]||Metallic, earthy | |||
|- | |||
|[[Cleavage]]||Basal – perfect on {0001} | |||
|- | |||
|[[Fracture]]||Flaky, otherwise rough when not on cleavage | |||
|- | |||
|[[Tenacity]]||Flexible non-elastic, sectile | |||
|- | |||
|[[Density]]||2.09–2.23 g/cm³ | |||
|- | |||
|[[Conductivity]]||High electrical and thermal conductivity | |||
|- | |||
|[[Optical Properties]]||Uniaxial (-) | |||
|- | |||
|[[Solubility]]||Soluble in molten nickel, warm chlorosulfuric acid | |||
|- | |||
|[[Other Characteristics]]||Strongly anisotropic, conducts electricity, greasy feel, readily marks | |||
|} | |||
===Quantitative Properties=== | |||
{| class="wikitable" | |||
|- | |||
! Property !! Value !! Unit | |||
|- | |||
| [[Density]] || 2.09–2.23 || g/cm³ | |||
|- | |||
| [[Electrical Conductivity]] || ~10⁴–10⁵ || S/m | |||
|- | |||
| [[Thermal Conductivity]] || 100–400 || W/m·K | |||
|- | |||
| [[Specific Surface Area]] || 5–25 || m²/g | |||
|- | |||
| [[Interlayer Spacing]] || ~0.335 || nm | |||
|- | |||
| [[Mohs Hardness]] || 1–2 || Dimensionless | |||
|- | |||
| [[Melting Point (under pressure)]] || ~3650–3697 || °C | |||
|- | |||
| [[Young's Modulus]] || ~10–15 || GPa | |||
|- | |||
| [[Shear Modulus]] || ~5 || GPa | |||
|- | |||
| [[Coefficient of Thermal Expansion]] || ~-1 × 10⁻⁶ (parallel to layers) || /°C | |||
|} | |||
== Links to Other Published Resources == | ==Links to Other Published Resources== | ||