IrO2
ceramic· IrO2
Iridium dioxide (IrO₂) is a ceramic oxide compound combining iridium metal with oxygen, belonging to the transition metal oxide family. It is primarily employed as an electrocatalyst and anode material in electrochemical systems, including water electrolysis, chlor-alkali processes, and oxygen evolution reactions, valued for its exceptional chemical stability and catalytic activity in harsh aqueous environments. Engineers select IrO₂ over alternatives like RuO₂ when maximum corrosion resistance and long service life are critical despite higher material cost, making it the preferred choice for demanding industrial electrodes and fuel cell components.
electrochemical anodeswater electrolysis catalystschlor-alkali cell electrodesfuel cell componentsoxygen evolution catalystscorrosion-resistant coatings
Compliance & Regulations
?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)2 entries | 270.0 | GPa | — | ||
| ↳ | 285.7 | GPa | — | ||
Poisson's Ratio(ν) | 0.3400 | - | — | ||
Shear Modulus(G)2 entries | 103.6 | GPa | — | ||
| ↳ | 125.8 | GPa | — |
N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form / heat treatment / basis.
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 9.944 | kg/m³ | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 0.000 | eV | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Seebeck Coefficient(S) | 5.647 | µV/K | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.3097 | eV/atom | — | ||
Formation Energy(ΔHf)2 entries | -0.8616 | eV/atom | — | ||
| ↳ | -0.6392 | eV/atom | — |
N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form / heat treatment / basis.
Verified Unverified Low confidence (<80%) Link to source
Regulatory Screening
Environmental
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.