KMn4O8 — Properties & Data | MatWorld

KMn4O8

ceramic

· JVASP-52810· KMn4O8

KMn₄O₈ is a potassium-manganese oxide ceramic compound belonging to the mixed-valence metal oxide family. While not a widely commercialized engineering ceramic, compounds in this chemical system are investigated primarily for electrochemical and catalytic applications, where manganese oxides are valued for their variable oxidation states and redox activity. The material may serve in energy storage, heterogeneous catalysis, or as a precursor to more refined oxide ceramics, though practical engineering adoption remains limited compared to established alternatives like manganese dioxide (MnO₂) or spinel-structured oxides.

battery cathodes (research)catalytic converterswater treatment (oxidation)electrochemical applicationshigh-temperature ceramics (potential)solid-state energy storage

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	4.206	kg/m³	DFT · OptB88vdW

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	0.000	eV	DFT · OptB88vdW
Magnetic Moment(μB)	8.977	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000372	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000354	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-19.76	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	-11.93	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)	0.2603	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-1.637	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.

KMn4O8

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental