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Iron Oxide (Fe3O4) Nanopowder

CAS Number 1317-61-9

Anode Materials, Battery Materials, Green Energy Materials, Materials

Product Code M2439A1-25g
Price £80 ex. VAT

Iron Oxide Nanopowder Containing Iron (II) and Iron (III) Ions

Used in a wide range of applications including magnetic sealing, magnetic healthcare, catalysts, pigments, batteries, supercapacitors, nanomedicine and hydrogen evolution

Overview | Product Information | Related Products

Iron oxide (Fe3O4), CAS number 1317-61-9, is a type of iron oxide containing both iron (II) and iron (III) ions, also written as FeO·Fe2O3. Fe3O4. It occurs in nature as the mineral magnetite, exhibiting ferrimagnetism.

Iron oxide powder has been used as pigments, catalysts, and contrast agents in MRI scanning. More recently, iron oxide nanopowder is used as anode materials with carbon-based materials. These composite anode materials demonstrate a specific capacity of 980 mAh/g at a fast-charging rate of 4C with outstanding cycling stability.

Also used as a catalyst in hydrogen evolution reaction (HER), this Cu-FeOOH/Fe3O4 exhibits excellent stability and a low overpotential of 285 mV at 500 mA/cm2 for alkaline HER. Density functional theory (DFT) calculations show that the catalyst decreases the energy barrier of water dissociation and hydrogen generation, enabling efficient HER.

green energy material

Green Energy Material

For battery research

anode material for high performance

High Performance Anode Material

Demonstrating a specific capacity of 980 mAh/g at 4C charging rate

Worldwide shipping

Worldwide Shipping

Quick and reliable shipping

High purity

High Purity

>98.45% High purity

General Information

CAS Number 1317-61-9
Chemical Formula Fe3O4
Full Name Iron (II,III) oxide
Molecular Weight 231.53 g/mol
Synonyms Triiron tetraoxide, Ferrous ferric oxide, Black iron oxide, Magnetite, Triiron tetroxide
Classification or Family Supercapacitors, Batteries, Anode materials, Iron oxides, Lithium-ion batteries, Hydrogen evolutions

Product Details

Particle Size 18 – 28 nm
Purity > 98.45%
Melting Point Tm = 1538 °C
Appearance Dark orange/brown powder

MSDS Documentation

Iron oxide (Fe3O4) powderIron oxide (Fe3O4) powder MSDS Sheet


  1. Electrochemically reconstructed Cu-FeOOH/Fe3O4 catalyst for efficient hydrogen evolution in alkaline media, C. Yang et al., Adv. Energy Mater., 12, 2200077 (2022); DOI: 10.1002/aenm.202200077.
  2. Recycling microplastics to fabricate anodes for lithium-ion batteries: from removal of environmental troubles via electrocoagulation to useful resources, J. Lee et al., Adv. Sci., 10, 2205675 (2023); DOI: 10.1002/advs.202205675.
  3. Fe3O4 nanoparticles: structures, synthesis, magnetic properties, surface functionalization, and emerging applications, M. Nguyen et al., Appl. Sci., 11, 11301 (2021); DOI: 10.3390/app112311301.

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