Li12Mn2O9 — Properties & Data | MatWorld

Li12Mn2O9

ceramic

· JVASP-47757· Li12Mn2O9

Li₁₂Mn₂O₉ is a lithium-manganese oxide ceramic compound belonging to the family of layered lithium metal oxides. This material is primarily investigated as a cathode component for lithium-ion batteries, where manganese oxides offer cost advantages and improved thermal stability compared to conventional cathode chemistries. While not yet established in high-volume production, compounds in this family are of significant research interest for next-generation battery systems seeking to balance energy density, safety, and manufacturing economics.

battery cathode materialslithium-ion energy storageelectric vehicle powertrainsstationary energy storage systemsresearch and developmentthermal stability applications

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	2.495	kg/m³	DFT · OptB88vdW

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	0.4110	eV	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	12.48	-	DFT · OptB88vdW
Electron Effective Mass(m*e)	0.9067	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.9133	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	8.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000110	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.0000286	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-272.8	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	245.3	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)	0.1105	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-1.973	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.

Li12Mn2O9

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental