Na4Ge2Se5 — Properties & Data | MatWorld

Na4Ge2Se5

ceramic

· JVASP-13381· Na4Ge2Se5

Na4Ge2Se5 is a quaternary chalcogenide ceramic composed of sodium, germanium, and selenium elements, belonging to the family of superionic conductors and solid electrolyte materials. This compound is primarily of research interest for solid-state battery applications and advanced thermal management systems, where its ion-conducting properties at elevated temperatures offer potential advantages over conventional liquid electrolytes in terms of safety, energy density, and operational range. While not yet widely commercialized, materials in this chalcogenide family are actively investigated as alternatives to oxide ceramics for next-generation energy storage and high-temperature electrochemical devices.

solid-state battery electrolytesion conductor researchthermal barrier coatings (exploratory)high-temperature electrochemical devicesadvanced semiconductor applications

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1363	lb/in³	DFT · OptB88vdW

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	1.617	eV	DFT · OptB88vdW
↳	2.861	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)	3.861	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000947	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000369	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-167.5	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	394	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	6.320	%	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)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.8552	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.

Na4Ge2Se5

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental