NaCoO2 — Properties & Data | MatWorld

NaCoO2

ceramic

· JVASP-1858· NaCoO2

NaCoO2 is a layered oxide ceramic compound belonging to the sodium cobalt oxide family, characterized by a sodium-cobalt-oxygen crystal structure with potential electrochemical and thermal properties. This material is primarily investigated in research contexts for energy storage applications, particularly as a cathode material in sodium-ion batteries and for thermoelectric devices where the layered structure can facilitate ion transport and charge carrier mobility. NaCoO2 represents an important alternative to lithium-based systems due to sodium's greater abundance and lower cost, making it notable for developers seeking scalable battery chemistries for stationary energy storage and emerging portable applications.

sodium-ion battery cathodesthermoelectric devicesenergy storage researchionic conductor applicationssolid-state electrolyte developmentadvanced ceramics research

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	151.6	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2400	-	DFT · OptB88vdW
Shear Modulus(G)	97.58	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	4.970	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)	0.8760	eV	DFT · OptB88vdW
Dielectric Constant (Relative Permittivity)(εr)	12.37	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	8.946	-	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.000	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00253	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000899	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-382.1	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	449.5	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	5.840	%	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)	0.000600	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-1.507	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.

NaCoO2

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental