Li4FeSi2O7 — Properties & Data | MatWorld

Li4FeSi2O7

ceramic

· JVASP-47654· Li4FeSi2O7

Li4FeSi2O7 is a lithium iron silicate ceramic compound that belongs to the family of lithium-containing oxide ceramics under active research for energy storage and electrochemical applications. This material is primarily investigated as a potential solid-state electrolyte or cathode component in lithium-ion battery systems, where its mixed ionic-electronic properties and structural stability are of interest for next-generation battery architectures. Engineers consider this compound in advanced battery research contexts where traditional liquid electrolytes present thermal, safety, or energy density limitations, though it remains largely in the development phase rather than established commercial production.

solid-state battery electrolyteslithium-ion battery developmentenergy storage researchhigh-temperature electrochemistryceramic electrolyte materials

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1054	lb/in³	DFT · OptB88vdW

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

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	0.1180	eV	DFT · OptB88vdW
Dielectric Constant (Relative Permittivity)(εr)	7.426	-	DFT · OptB88vdW
Electron Effective Mass(m*e)	0.00333	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.00333	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	8.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.3877	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.0000210	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.0000285	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	67.35	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	67.06	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)	0.04470	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-2.453	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

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.

Li4FeSi2O7

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental