Li5SiP3 — Properties & Data | MatWorld

Li5SiP3

ceramic

· JVASP-52680· Li5SiP3

Li5SiP3 is a lithium-based ceramic compound belonging to the family of lithium phosphide and silicate ceramics, which are primarily explored as solid-state electrolyte materials and ion conductors. This is an experimental research compound rather than an established commercial material; it is investigated for applications requiring fast lithium-ion transport, particularly in next-generation solid-state battery systems where ionic conductivity and chemical stability are critical performance drivers. Engineers considering this material would be evaluating it as a component in advanced energy storage architectures where traditional liquid electrolytes present thermal, safety, or cycle-life limitations.

solid-state battery electrolyteslithium-ion conductorsadvanced energy storageresearch/prototype developmentthermal-stable separators

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	1.689	kg/m³	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	1.286	eV	DFT · OptB88vdW
↳	1.685	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	8.401	-	DFT · OptB88vdW
↳	7.215	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00154	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00104	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-325.9	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	335.3	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	29.43	%	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)	-0.6702	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.

Li5SiP3

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental