Sweden’s Smoltek, Heraeus to test low-iridium PTE for hydrogen

Smoltek Hydrogen and Heraeus Precious Metals will start a 3,000-hour autumn durability test of ultra-low iridium PTEs for PEM water electrolysis.
The work targets a PEM scaling bottleneck: high iridium cost, with Smoltek aiming for below 0.1 mg/cm² loading while maintaining efficiency.
Heraeus will run testing and material analysis under realistic operating conditions to support industrialisation.