Iridium(IV)_oxide

Iridium(IV) oxide

Iridium(IV) oxide

Chemical compound

Iridium(IV) oxide, IrO2, is the only well-characterised oxide of iridium. It is a blue-black solid. The compound adopts the TiO2 rutile structure, featuring six coordinate iridium and three coordinate oxygen.[1]

Quick Facts Names, Identifiers ...

It is used with other rare oxides in the coating of anode-electrodes for industrial electrolysis and in microelectrodes for electrophysiology research.[2]

As described by its discoverers, it can be formed by treating the green form of iridium trichloride with oxygen at high temperatures:

2 IrCl3 + 2 O2 → 2 IrO2 + 3 Cl2

A hydrated form is also known.[3]

Application

Iridium dioxide can be used as an anode electrode for industrial electrolysis and as a microelectrode for electrophysiological studies.[4]

Iridium dioxide can be used to make coated electrodes.[5]

References

  1. [1]
    Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.
  2. [2]
    Cogan, Stuart F. (August 2008). "Neural Stimulation and Recording Electrodes". Annual Review of Biomedical Engineering. 10 (1): 275–309. doi:10.1146/annurev.bioeng.10.061807.160518. PMID 18429704.
  3. [3]
    H. L. Grube (1963). "The Platinum Metals". In G. Brauer (ed.). Handbook of Preparative Inorganic Chemistry, 2nd Ed. NY: Academic Press. p. 1590.
  4. [4]
    Cogan, Stuart F. (August 2008). "Neural Stimulation and Recording Electrodes". Annual Review of Biomedical Engineering. 10 (1): 275–309. doi:10.1146/annurev.bioeng.10.061807.160518. ISSN 1523-9829. PMID 18429704.
  5. [5]
    "改性二氧化铱电极研制--《无机盐工业》1998年03期". www.cnki.com.cn. Retrieved 2021-05-21.
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