CoI2

Name: CoI2
Brand: MatWorld

metal

· CoI2

Cobalt iodide (CoI₂) is an intermetallic compound combining cobalt and iodine, belonging to the transition metal halide family. While not a mainstream structural material in conventional engineering, CoI₂ is of significant interest in materials research for layered crystal structures and two-dimensional material applications, particularly as a candidate for exfoliation into thin-film devices. Its notable low exfoliation energy makes it attractive for emerging technologies in electronics, photonics, and energy storage where atomically thin materials are engineered for enhanced properties.

2D materials researchthin-film electronicsexfoliated nanosheetscatalysis applicationsenergy storage devicesexperimental/research compound

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	3,889.9	ksi	DFT · OptB88vdW
Exfoliation Energy(Eexf)	85.11	meV/atom	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2900	-	DFT · OptB88vdW
Shear Modulus(G)	1,921.8	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2154	lb/in³	DFT · OptB88vdW

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

Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.000	eV	DFT · OptB88vdW
↳	0.02800	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	425.2	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	83.17	-	DFT · TBmBJ
Magnetic Moment(μB)	2.264	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.000	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000931	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000924	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	42.33	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	41.78	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.

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

Filter by

Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.02120	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	0.01733	eV/atom	DFT · OptB88vdW
↳	-0.2964	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

Regulatory Screening

Environmental

Export Control

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.

CoI2 — Properties & Data | MatWorld

CoI2

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control