Through independent technological innovation, YHKC has developed a novel porous IrO₂ nanonetwork. The continuous network structure facilitates electron transport within lowiridiumloading membraneelectrode assemblies (MEAs), successfully reducing the iridium loading on PEM MEAs to 0.5 mg·cm⁻².

At a low Ir loading of 0.5 mg·cm⁻², the MEA fabricated with YHKCIrO₂ nanonetwork catalyst delivers comparable activity to that with a high Ir loading of 1 mg·cm⁻², with merely a 4 mV difference in cell voltage at 2 A·cm⁻² current density. Notably, during a 2000hour galvanostatic durability test, the YHKCIrO₂ nanonetwork catalyst achieves an extremely low degradation rate of only 2.3 μV·h⁻¹. It has also demonstrated outstanding activity and stability in customer trial evaluations.

Without compromising reliability, YHKCIrO₂ nanonetwork cuts the MEA iridium loading by 50 %, marking a major technical breakthrough combining low iridium loading and superior longterm stability.