Li4HfO4

ceramic

· JVASP-50434· Li4HfO4

Li₄HfO₄ is a lithium hafnium oxide ceramic compound that belongs to the family of mixed-metal oxides with potential applications in solid-state ionic conductors and advanced ceramic materials. This material is primarily of research interest rather than established commercial use, studied for its ionic transport properties and thermal stability in environments requiring hafnium-based ceramics. It represents an exploratory composition within the broader class of lithium-containing oxides being investigated for next-generation energy storage, thermal barrier coatings, and specialized refractory applications where hafnium's high melting point and chemical inertness are valued.

solid-state battery electrolytesthermal barrier coatingshigh-temperature ceramicsrefractory materialsionic conductor researchexperimental aerospace components

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1702	lb/in³	DFT · OptB88vdW

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	4.626	eV	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	3.438	-	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000924	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000729	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-160.7	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	336	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)	0.06520	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-2.660	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.

Li4HfO4 — Properties & Data | MatWorld

Li4HfO4

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental