Li5 Fe1 S4

semiconductor

· Li5 Fe1 S4

Li₅FeS₄ is a lithium iron sulfide compound belonging to the sulfide semiconductor family, of primary interest as a cathode material and solid-state electrolyte component in advanced lithium-ion and all-solid-state battery research. This material is largely experimental and investigated for next-generation energy storage systems where its ionic conductivity, electrochemical stability, and structural compatibility with lithium metal anodes offer potential advantages over conventional oxide-based electrolytes, though commercialization remains in early development stages.

all-solid-state batteriessolid electrolyteslithium-ion battery cathodeshigh-energy-density storageelectric vehicle powertrainsresearch & development (energy storage)

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.00190	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-1.092	eV/atom	—

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

Regulatory Screening

Environmental

Export Control

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.

Li5 Fe1 S4

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control