KLiS

ceramic

· KLiS

KLiS is a potassium lithium sulfide ceramic compound belonging to the family of solid-state ionic conductors. This material is primarily of research interest for its potential as a solid electrolyte in next-generation battery systems, where its ionic conductivity properties could enable safer, higher-energy-density electrochemical devices compared to conventional liquid electrolytes. The relatively low density combined with ceramic rigidity makes it a candidate for applications requiring ion transport with structural integrity.

solid-state battery electrolytesenergy storage systemsionic conductor researchadvanced battery developmentelectrochemical devices

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	4,486	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2100	-	DFT · OptB88vdW
Shear Modulus(G)	3,251.7	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.06958	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	3.347	eV	DFT · OptB88vdW
↳	4.889	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)3 entries	7.923	-	DFT · OptB88vdW
↳	8.680	-	DFT · PBE
↳	5.979 range 3.744–8.215median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	4.047	-	DFT · OptB88vdW
↳	3.299	-	DFT · TBmBJ
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	DFT · PBE
Total Dielectric Tensor(ε)	Matrix (redacted)	-	DFT · PBE
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.000	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000561	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00135	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-95.44	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	375.5	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	0.000	%	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.

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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.04960	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-1.351	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.

KLiS — Properties & Data | MatWorld

KLiS

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental