Na5 Co2 S5
semiconductor· Na5 Co2 S5
Na5Co2S5 is a mixed-valence sodium cobalt sulfide compound belonging to the quaternary sulfide semiconductor family, composed of sodium, cobalt, and sulfur elements in a layered or framework crystal structure. This material is primarily of research and development interest for energy storage and photovoltaic applications, particularly in emerging battery chemistries and thin-film solar devices where layered sulfides offer potential advantages in ion conductivity and charge transport. As a cobalt-containing sulfide semiconductor, it represents an alternative to conventional cathode materials and represents active investigation in materials science rather than established industrial production.
battery cathode materials (research phase)solid-state ion conductorsthin-film photovoltaics (developmental)energy storage systemssemiconductor heterostructuresmaterials research and synthesis
Compliance & Regulations
?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | — | eV | — | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Formation Energy(ΔHf) | — | 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.