MoH4O5 — Properties & Data | MatWorld

MoH4O5

ceramic

· JVASP-54725· MoH4O5

MoH4O5 is a molybdenum oxide hydrate ceramic compound, part of the mixed-valence molybdenum oxide family. This material is primarily of research interest for catalytic and electrochemical applications, where layered molybdenum oxides show promise in hydrogen evolution reactions, energy storage, and chemical sensing due to their variable oxidation states and structural flexibility. Industrial adoption remains limited; the material is not commonly found in mature engineering applications but represents an emerging class of materials for next-generation catalysts and functional ceramics where conventional oxides fall short.

electrocatalysis and hydrogen productionenergy storage deviceschemical sensorsresearch and development materialsadvanced ceramics

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	3.095	kg/m³	DFT · OptB88vdW

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	2.263	eV	DFT · OptB88vdW
↳	2.820	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	8.915	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	4.597	-	DFT · OptB88vdW
↳	3.832	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.2094	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00200	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00159	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-235.4	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	374.7	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	6.840	%	DFT · TBmBJ

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)	0.1529	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-1.288	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.

MoH4O5

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental