Li4Mn5O9F

ceramic

· JVASP-47298· Li4Mn5O9F

Li₄Mn₅O₉F is a mixed-valence lithium manganese oxide fluoride ceramic compound under investigation as a cathode material for lithium-ion batteries. This fluorine-substituted oxide belongs to the family of layered manganese oxides, which are attractive for energy storage applications due to their potential for high capacity and tunable electrochemical properties. The fluorine doping modifies the crystal structure and redox behavior compared to non-fluorinated analogs, making it relevant for researchers developing next-generation battery cathodes with improved cycle life, thermal stability, or cost advantages over conventional lithium transition-metal oxides.

lithium-ion battery cathodesenergy storage researchelectrochemical devicessolid-state battery developmentthermal battery applications

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1474	lb/in³	DFT · OptB88vdW

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

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	0.5250	eV	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	109.6	-	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000302	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.0000540	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-385.9	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	318.4	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)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-1.988	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.

Li4Mn5O9F — Properties & Data | MatWorld

Li4Mn5O9F

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental