Ossila M2439A2 is an iron (II,III) oxide (Fe3O4) nanopowder with a particle size of 30 – 50 nm and 99% purity. Also known as magnetite or black iron oxide (CAS 1317-61-9), this compound holds both iron (II) and iron (III) ions and can be written as FeO·Fe2O3. It is ferrimagnetic and appears as a dark orange/brown to black powder.
Fe3O4 has a long history as a pigment, a catalyst and an MRI contrast agent. In energy storage research, the nanopowder is combined with carbon-based materials to form composite anodes; such composites have reached a specific capacity of 980 mAh/g at a fast-charging rate of 4C while keeping outstanding cycling stability.
The material also serves in electrocatalysis. A Cu-FeOOH/Fe3O4 catalyst showed excellent stability and a low overpotential of 285 mV at 500 mA/cm2 for alkaline hydrogen evolution, with DFT calculations indicating a reduced energy barrier for water dissociation and hydrogen generation.
- Preparation of Fe3O4/carbon composite anodes for fast-charging lithium-ion batteries.
- Electrode material studies for supercapacitors.
- Development of catalysts for the alkaline hydrogen evolution reaction (HER).
- Research into magnetic sealing, magnetic healthcare and nanomedicine.
- Use as a pigment and as a general catalyst material.
| Brand | Ossila |
|---|---|
| CAS number | 1317-61-9 |
| Molecular formula | Fe3O4 |
| Purity | 99% |
| Category | — |
| Pack sizes | — |
| Physical form | Dark orange/brown to black powder |
| Storage | — |
- Product code: M2439A2
- Product Code: M2439A2
- Full Name: Iron (II,III) oxide
- Molecular Weight: 231.53 g/mol
- Particle Size: 30 – 50 nm
- Melting Point: 1538 °C
- Synonyms: Triiron tetraoxide, Ferrous ferric oxide, Black iron oxide, Magnetite, Triiron tetroxide
- Classification: Supercapacitors, Batteries, Anode materials, Iron oxides, Lithium-ion batteries, Hydrogen evolutions
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