Na2NiO2 — Properties & Data | MatWorld

Na2NiO2

ceramic

· Na2NiO2

Sodium nickel oxide (Na2NiO2) is an inorganic ceramic compound combining alkali metal and transition metal oxides, belonging to the family of mixed-metal oxides used in electrochemical and catalytic applications. This material is primarily investigated in research contexts for battery cathodes, solid-state electrolytes, and heterogeneous catalysis, where its mixed-valence nickel sites and ionic conductivity offer potential advantages in energy storage and chemical conversion processes. While not yet a mainstream engineering material like conventional lithium-ion cathode ceramics, Na2NiO2 represents an important exploration pathway for sodium-ion battery development and low-cost alternatives to lithium-based systems.

sodium-ion battery cathodessolid-state electrolytesheterogeneous catalysisoxygen reduction catalystsexperimental energy storageresearch electrochemistry

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	80.44	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.3500	-	DFT · OptB88vdW
Shear Modulus(G)	36.67	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	2.378	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)	0.8580	eV	DFT · OptB88vdW
Dielectric Constant (Relative Permittivity)(εr)	11.52	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	5.052	-	DFT · OptB88vdW
Magnetic Moment(μB)	2.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)2 entries	0.000	C/m²	DFT · OptB88vdW
↳	0.1341	C/m²	DFT · PBE
Piezoelectric Stress Tensor(eij)	Matrix (redacted)	C/m²	DFT · PBE
Thermoelectric Power Factor(PF)2 entries	0.00195	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00130	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-419.8	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	457.4	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)	0.1164	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-1.253	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.

Na2NiO2

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental