K2NiF4 — Properties & Data | MatWorld

K2NiF4

metal

· K2NiF4

K2NiF4 is an inorganic fluoride compound belonging to the layered perovskite family, combining potassium, nickel, and fluorine in a crystalline structure. This material is primarily investigated in research contexts for solid-state ionics and advanced ceramics applications, particularly as a potential fluoride ion conductor for electrolyte membranes and energy storage systems. Its layered structure and ionic mobility make it of interest for next-generation solid-state batteries and fuel cells, where engineers seek alternatives to conventional electrolyte materials with improved thermal stability and ion transport properties.

solid-state electrolytesfluoride ion conductorsresearch ceramicsenergy storage systemsionic membrane materialsadvanced battery development

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

Units:

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Method

Property	Value	Unit	Conditions
Bulk Modulus(K)2 entries	46.79	GPa	DFT
↳	54.94	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.3200	-	DFT · OptB88vdW
Shear Modulus(G)2 entries	24.03	GPa	DFT
↳	22.89	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.

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Property	Value	Unit	Conditions	Source
Density(ρ)	3.358	kg/m³	DFT · OptB88vdW

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	0.4160	eV	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	17.98	-	DFT · OptB88vdW
Magnetic Moment(μB)	1.998	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000817	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000815	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-200.7	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	394.3	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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.00400	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-2.505	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

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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.

K2NiF4

Mechanical Properties

Physical Properties

Electrical Properties

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