Magnesium hydride (MgH2) is an ionic ceramic compound and hydrogen storage material composed of magnesium and hydrogen. It is primarily investigated as a solid-state hydrogen storage medium for energy applications, where its high volumetric hydrogen density makes it attractive for fuel cell systems and portable power generation. MgH2 remains largely in the research and development phase rather than widespread industrial production, but represents a promising alternative to liquid hydrogen storage and other hydride materials due to its relatively abundant constituent elements and potential for reversible hydrogen release through thermal decomposition.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 56.83 | GPa | — | ||
Poisson's Ratio(ν) | 0.2100 | - | — | ||
Shear Modulus(G) | 40.82 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 1.570 | kg/m³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 2.921 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr)2 entries | 11.04 | - | — | ||
| ↳ | 10.71 | - | — | ||
Electronic Dielectric Tensor(ε∞) | Matrix (redacted) | - | — | ||
Total Dielectric Tensor(ε) | Matrix (redacted) | - | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Piezoelectric Modulus(eij)2 entries | 1.398 | C/m² | — | ||
| ↳ | 0.000 | C/m² | — | ||
Piezoelectric Stress Tensor(eij) | Matrix (redacted) | C/m² | — | ||
Seebeck Coefficient(S) | -270.7 | µV/K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.03880 | eV/atom | — | ||
Formation Energy(ΔHf)2 entries | -0.2629 | eV/atom | — | ||
| ↳ | -0.2580 | eV/atom | — |