K2Se5 — Properties & Data | MatWorld

K2Se5

ceramic

· JVASP-4912· K2Se5

K2Se5 is an inorganic ceramic compound composed of potassium and selenium, belonging to the metal chalcogenide family. This material is primarily of research interest rather than established industrial production, being studied for potential applications in energy storage, photovoltaic devices, and solid-state ionic conductors due to the favorable layered crystal structure characteristic of potassium selenides. Engineers considering K2Se5 would be working on early-stage development projects in battery technology, thermoelectrics, or optoelectronic systems where alternative selenium-based ceramics may be limited by cost or performance constraints.

solid-state batteriesphotovoltaic researchionic conductor materialsenergy storage (experimental)semiconductor compoundsthermal management research

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Exfoliation Energy(Eexf)	100.1	meV/atom	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1385	lb/in³	DFT · OptB88vdW

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

Filter by

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	0.7250	eV	DFT · OptB88vdW
Dielectric Constant (Relative Permittivity)(εr)	12.82	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	9.710	-	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.07042	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000893	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000534	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-215.9	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	315.4	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)	0.00250	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.6295	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.

K2Se5

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental