Li2BeF4 — Properties & Data | MatWorld

Li2BeF4

Name: Li2BeF4
Brand: MatWorld

ceramic

· Li2BeF4

Li₂BeF₄ is a lithium beryllium fluoride ceramic compound that functions as a solid electrolyte and optical material in specialized high-performance applications. This material is primarily investigated in research contexts for molten salt reactor fuels (as a component of flibe—fluoride lithium beryllium eutectic mixtures) and as a potential solid-state electrolyte for advanced lithium-ion battery systems, where its ionic conductivity and thermal stability are of interest. Engineers select this material class for applications requiring exceptional chemical inertness, high-temperature stability, and ionic transport properties in extreme environments where conventional polymeric or oxide electrolytes degrade.

molten salt reactor fuelssolid-state battery electrolyteshigh-temperature ionic conductorsnuclear fuel systemsresearch-phase energy storage

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	2.147	kg/m³	DFT · OptB88vdW

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

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	7.862	eV	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	1.810	-	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00114	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000193	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-175.5	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	432	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C

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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Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-3.299	eV/atom	DFT · OptB88vdW
↳	-3.366	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.

Li2BeF4

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental