CoS2

Name: CoS2
Brand: MatWorld

metal

· CoS2

Cobalt disulfide (CoS₂) is a transition metal chalcogenide compound that belongs to the pyrite family of materials. It is primarily investigated as an electrode material in energy storage and catalysis applications, particularly for electrochemical devices requiring sulfide-based active materials. CoS₂ is notable for its potential in lithium-ion batteries, supercapacitors, and hydrogen evolution catalysis, where its mixed-valence cobalt centers and layered electronic structure offer advantages over traditional carbon or oxide alternatives.

battery electrodeshydrogen evolution catalystssupercapacitorselectrochemical storagecatalytic surfacesresearch materials

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

Units:

si imperial

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Method

Property	Value	Unit	Conditions
Bulk Modulus(K)2 entries	18,025.7	ksi	DFT
↳	4,088.6	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2900	-	DFT · OptB88vdW
Shear Modulus(G)2 entries	10,617.5	ksi	DFT
↳	2,014.6	ksi	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.

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1291	lb/in³	DFT · OptB88vdW

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	0.000	eV	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000798	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000827	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-33.08	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	-33.97	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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Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.3014	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-0.1485	eV/atom	DFT · OptB88vdW
↳	-0.5289	eV/atom	Measured

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

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.

CoS2 — Properties & Data | MatWorld

CoS2

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