K2ReH9 — Properties & Data | MatWorld

K2ReH9

Name: K2ReH9
Brand: MatWorld

ceramic

· K2ReH9

K2ReH9 is a potassium-rhenium hydride ceramic compound, representing an experimental intermetallic hydride system combining rare refractory metal chemistry with ionic ceramic frameworks. This material belongs to the class of complex hydride ceramics and is primarily of research interest rather than established industrial production, with potential applications in hydrogen storage systems, catalysis, and advanced refractory applications where the thermal stability and chemical properties of rhenium-based compounds could be leveraged.

hydrogen storage researchcatalytic supportshigh-temperature refractoriesexperimental ceramicsmaterials researchadvanced composites development

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1151	lb/in³	DFT · OptB88vdW

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

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	5.049	eV	DFT · OptB88vdW
↳	5.710	eV	Measured
Dielectric Constant (Relative Permittivity)(εr)	643	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	3.321	-	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.1002	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00100	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000309	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-406.1	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	365.9	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)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.2837	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.

K2ReH9

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental