oxygen evolution reaction schematic of iridium catalyst on titanium nitride (IMAGE)

DOE/Brookhaven National Laboratory

oxygen evolution reaction schematic of iridium catalyst on titanium nitride

Caption

This schematic shows how a catalyst composed of a few layers of iridium oxide (IrOx) over a support made of titanium nitride (TiN) can efficiently produce oxygen (O2), hydrogen ions (H+), and electrons (e-) from water molecules (H2O) in an acidic electrolyte. This "oxygen evolution reaction" is the more challenging of two reactions needed to split water to produce hydrogen gas (H2).

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Tianyou Mou/Brookhaven National Laboratory

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