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.
Compliance & Regulations
| 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 | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 9.944 | kg/m³ | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 0.000 | eV | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Seebeck Coefficient(S) | 5.647 | µV/K | — |
| 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 | — |