Co9 S8
semiconductor· Co9 S8
Co₉S₈ is a cobalt sulfide compound belonging to the metal chalcogenide semiconductor family, characterized by a mixed-valence cobalt structure that gives it unique electronic and catalytic properties. This material has emerged primarily in electrochemistry and energy storage research, where it serves as an active catalyst for water splitting, oxygen evolution reactions, and as a component in battery electrodes; it is notable for combining earth-abundant cobalt with sulfur to achieve catalytic performance comparable to precious-metal catalysts while offering cost advantages and improved stability in alkaline environments.
water electrolysis catalystsoxygen evolution electrodesenergy storage deviceshydrogen production systemselectrochemical sensorsresearch-phase materials
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.