Lithium iodide (LiI) is an ionic ceramic compound belonging to the halide family, characterized by a simple rock-salt crystal structure with high ionic bonding. It is primarily used in solid-state electrolytes for lithium-ion batteries and as a precursor material in laboratory synthesis of advanced battery chemistries, where its ionic conductivity and chemical compatibility with lithium metal make it attractive for next-generation energy storage research. Engineers consider LiI when designing all-solid-state battery systems or studying lithium transport mechanisms, though it faces practical challenges including hygroscopicity and limited commercial deployment compared to oxide-based solid electrolytes.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 22.30 | GPa | — | ||
Poisson's Ratio(ν) | 0.2300 | - | — | ||
Shear Modulus(G) | 14.58 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 4.192 | kg/m³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg)2 entries | 5.620 | eV | — | ||
| ↳ | 4.581 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr)2 entries | 15.50 | - | — | ||
| ↳ | 9.122 range 4.349–13.89median of 2 measurements | - | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Piezoelectric Modulus(eij)2 entries | 0.1728 | C/m² | — | ||
| ↳ | 0.000 | C/m² | — | ||
Piezoelectric Stress Tensor(eij) | Matrix (redacted) | C/m² | — | ||
Seebeck Coefficient(S) | -302.9 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.04500 | eV/atom | — | ||
Formation Energy(ΔHf)2 entries | -1.400 | eV/atom | — | ||
| ↳ | -1.289 | eV/atom | — |