Mg2NiH4

metal

· JVASP-52912· Mg2NiH4

Mg2NiH4 is a magnesium-nickel metal hydride compound that belongs to the intermetallic hydride family, combining lightweight magnesium with nickel to form a hydrogen-storage material. This is primarily a research and development material studied for hydrogen storage applications, where it functions as a solid-state hydrogen carrier offering potential advantages in energy density and safety compared to conventional gas or liquid hydrogen storage systems. Engineers evaluate this compound for next-generation energy storage solutions, particularly in fuel cell vehicles and renewable energy systems where compact, safe hydrogen storage is critical.

hydrogen storage systemsfuel cell energy storagemetal hydride researchlightweight energy carriersadvanced battery/power applicationsclean energy infrastructure

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.09798	lb/in³	DFT · OptB88vdW

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	1.725	eV	DFT · OptB88vdW
↳	1.928	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	7.492	-	DFT · OptB88vdW
↳	6.327	-	DFT · TBmBJ
Electron Effective Mass(m*e)	1.917	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.853	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00204	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00163	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-299.4	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	371.1	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	24.58	%	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.

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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.2862	eV/atom	DFT · OptB88vdW

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

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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.

Mg2NiH4 — Properties & Data | MatWorld

Mg2NiH4

Physical Properties

Electrical Properties

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