Na1 Cu4 S4

semiconductor

· Na1 Cu4 S4

Na₁Cu₄S₄ is a mixed-valence copper sulfide semiconductor compound containing sodium, belonging to the sulfide-based solid-state material family. This is a research-phase material of interest for ionic conductivity and energy storage applications, where the sodium content suggests potential use in sodium-ion battery chemistries or solid electrolyte systems. Unlike conventional copper sulfides, the sodium incorporation creates opportunities for tuning electronic and ionic transport properties, making it relevant for next-generation battery and thermoelectric device development.

sodium-ion batteriessolid electrolyte materialschalcogenide semiconductorsenergy storage researchthermoelectric devicesionic conductors

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.02270	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-0.4490	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.

Na1 Cu4 S4

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control