Li5FeF8 — Properties & Data | MatWorld

Li5FeF8

metal

· JVASP-43556· Li5FeF8

Li5FeF8 is a lithium iron fluoride compound being investigated as a solid-state electrolyte and cathode material for next-generation lithium-ion batteries. This ionic compound combines lithium's high electrochemical potential with iron and fluoride constituents to achieve enhanced ionic conductivity and electrochemical stability, positioning it as a research material for high-energy-density battery systems. The material remains largely in the experimental phase, with potential applications in automotive electric powertrains and grid-scale energy storage where conventional liquid electrolytes present thermal or safety limitations.

solid-state battery electrolyteslithium-ion battery cathodeselectric vehicle energy storagegrid-scale battery systemshigh-temperature battery applicationsionic conductor research

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	50.17	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2600	-	DFT · OptB88vdW
Shear Modulus(G)	30.74	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	2.974	kg/m³	DFT · OptB88vdW

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

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.01900	eV	DFT · OptB88vdW
↳	0.000	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)	2.543	-	DFT · OptB88vdW
Magnetic Moment(μB)	1.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.0000400	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.0000396	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	47.00	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	43.71	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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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.1083	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-2.818	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.

Li5FeF8

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