MgH2 — Properties & Data | MatWorld

MgH2

Name: MgH2
Brand: MatWorld

ceramic

· MgH2

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.

hydrogen storage systemsfuel cell applicationsportable energy storagethermal energy managementresearch hydrogen carriers

Compliance & Regulations

?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	56.83	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2100	-	DFT · OptB88vdW
Shear Modulus(G)	40.82	GPa	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Density(ρ)	1.570	kg/m³	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	4.085	eV	DFT · OptB88vdW
↳	5.806	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)2 entries	10.71	-	DFT · OptB88vdW
↳	11.04	-	DFT · PBE
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	3.784	-	DFT · OptB88vdW
↳	2.771	-	DFT · TBmBJ
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	DFT · PBE
Total Dielectric Tensor(ε)	Matrix (redacted)	-	DFT · PBE
Electron Effective Mass(m*e)	0.5300	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	2.613	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)2 entries	0.000	C/m²	DFT · OptB88vdW
↳	1.398	C/m²	DFT · PBE
Piezoelectric Stress Tensor(eij)	Matrix (redacted)	C/m²	DFT · PBE
Thermoelectric Power Factor(PF)2 entries	0.00331	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00350	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-270.7	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	408.1	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	0.000	%	DFT · TBmBJ

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

Verified Unverified Low confidence (<80%) Link to source

Filter by

Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.03880	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-0.2580	eV/atom	DFT · OptB88vdW
↳	-0.2629	eV/atom	Measured

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

Verified Unverified Low confidence (<80%) Link to source

Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data

Regulatory Screening

Environmental

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.

MgH2

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental