KFeS2 — Properties & Data | MatWorld

KFeS2

metal

· JVASP-15271· KFeS2

KFeS2 is an iron sulfide compound that belongs to the pyrite family of minerals, potentially useful as a semiconductor or catalyst material. This material is primarily studied in research contexts for applications in energy storage, photovoltaics, and heterogeneous catalysis due to iron sulfides' low cost and earth-abundant composition. Engineers consider iron sulfide compounds as alternatives to precious-metal catalysts and in emerging battery chemistries, though KFeS2 itself remains less established in mainstream industrial use compared to simpler iron sulfide phases.

research and developmentheterogeneous catalysisphotovoltaic semiconductorsenergy storage systemselectrochemical applicationscost-effective metal sulfides

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	33.74	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2900	-	DFT · OptB88vdW
Shear Modulus(G)	19.35	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	2.931	kg/m³	DFT · OptB88vdW

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.000	eV	DFT · OptB88vdW
↳	0.000	eV	DFT · TBmBJ
Magnetic Moment(μB)	1.859	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.0000729	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.0000726	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	20.34	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	21.20	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.

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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.00850	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.8767	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

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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.

KFeS2

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

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