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Smoltek’s low-iridium PTE reach target of 0.1 mg iridium/cm2

Smoltek Hydrogen has produced hydrogen with only 0.1 mg of iridium per square centimeter in a 250-hour durability test – making our PTE a breakthrough technology for PEM electrolyzers.

Smoltek has developed a porous transport electrode (PTE) that reduces the amount of iridium catalysts in PEM electrolyzers to a minimal 0.1 mg/cm2, thus reaching the level that is considered to make large-scale production of PEM electrolyzers profitable.

In addition to the limited availability of the scarce precious metal (global supply only 9 tons/year), the high costs of iridium have also been a source of limited investment willingness for PEM electrolyzers.In a recent durability test over 250 hours of continuous operation (at 2 A/cm2), Smoltek Hydrogen’s PTE produced hydrogen with a catalyst loading of only 0.1 mg iridium/cm2 – without any degradation of the nanostructure of the electrolyzer cell. The test results demonstrate that the company’s anode electrode technology is durable and efficient, while reducing iridium usage by 95 percent compared to conventional technology.

Photo of Smoltek

Press release https://tinyurl.com/5n8muper

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