Cobalt(II,III) oxide
- 1 min read
- 4 chapters
Related on Lably
Through Chemical formula, Crystal structure and Oxide
Structure
Co3O4 adopts the normal spinel structure, with Co2+ ions in tetrahedral interstices and Co3+ ions in the octahedral interstices of the cubic close-packed lattice of oxide anions.
Sign in to keep reading
3 more chapters are free with a Lably account.
Synthesis
Cobalt(II) oxide, CoO, converts to Co3O4 upon heating at around 600–700 °C in air. Above 900 °C, CoO is stable. These reactions are described by the following equilibrium:
- 2 Co3O4 ⇌ 6 CoO + O2
Applications
Cobalt(II,III) oxide is used as a blue coloring agent for pottery enamel and glass, as an alternative to cobalt(II) oxide.
Cobalt(II,III) oxide is used as an electrode in some lithium-ion batteries, possibly in the form of cobalt oxide nanoparticles.
Safety
Cobalt compounds are potentially poisonous in large amounts.