MnO2 — Properties & Data | MatWorld

MnO2

Name: MnO2
Brand: MatWorld

semiconductor

· MnO2

Manganese dioxide (MnO2) is a ceramic oxide semiconductor with a layered crystal structure commonly found in the pyrolusite mineral form. It is widely used in battery technologies (particularly alkaline and lithium-ion cells), water treatment systems, and catalytic applications where its redox properties and surface reactivity are exploited. Engineers select MnO2 for energy storage and environmental remediation because of its low cost, abundance, electrochemical stability, and ability to facilitate both oxidation and reduction reactions—making it particularly valuable in consumer electronics and industrial-scale water purification.

alkaline battery cathodeswater purification and treatmentcatalysts for chemical synthesisenergy storage systemsoxygen evolution reactionsair filtration media

Compliance & Regulations

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

Units:

si imperial

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Method

Property	Value	Unit	Conditions
Bulk Modulus(K)2 entries	107.0	GPa	DFT
↳	195.2	GPa	DFT · OptB88vdW
Exfoliation Energy(Eexf)	54.23	meV/atom	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2500	-	DFT · OptB88vdW
Shear Modulus(G)2 entries	28.86	GPa	DFT
↳	123.7	GPa	DFT · OptB88vdW

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.

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

Property	Value	Unit	Conditions	Source
Density(ρ)	4.907	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	1.300	eV	Measured
↳	0.1570	eV	DFT · OptB88vdW
Dielectric Constant (Relative Permittivity)(εr)2 entries	27.50	-	DFT · OptB88vdW
↳	17.32	-	DFT · PBE
High-Frequency Dielectric Constant (ε∞)(ε∞)	155	-	DFT · OptB88vdW
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	DFT · PBE
Total Dielectric Tensor(ε)	Matrix (redacted)	-	DFT · PBE
Magnetic Moment(μB)	5.968	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.000	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00146	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.0000620	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-195.2	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	-1.673	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.

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

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Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.00940	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-1.796	eV/atom	DFT · OptB88vdW
↳	-1.800	eV/atom	Measured

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.

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.

MnO2

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

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