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Coating Technologies for PTLs

When it comes to hydrogen generation via water electrolysis, performance depends on more than just materials. One critical factor is coating technology applied to key components. In PEM and AEM electrolyzers, coatings are essentials for not only protecting materials, but enhancing performance, and extending operational life under demanding conditions.

 

Without proper coatings, electrolyzer components begin to degrade quickly. This leads to reduced efficiency, higher maintenance costs, and shorter lifespans. But with advanced technologies, coatings can do more than protect - they can improve electrical conductivity, reduce contact resistance, enhance corrosion resistance, and optimize surface properties for enhanced gas and liquid management.

 

At Bekaert, we specialize in precision-engineered coatings tailored for the unique challenges of modern electrolyzers. Applied to our metal fiber-based PTLs, our coating technology is developed to withstand harsh chemical environments, high temps, and long-term operational stress. All while maintaining optimal performance.

 

Our portfolio supports PEM and AEM systems, with coating materials and processes selected for chemical compatibility, cost efficiency, and durability. In acidic, oxidative PEM environments, a noble metal coating, such as platinum, is often used to protect titanium PTLs.

Platinum offers exceptional corrosion resistance to ensure that titanium PTLs retain their structural integrity under aggressive conditions, over prolonged operation. But beyond that, platinum also enhances the electrochemical performance of the PTL by improving contact resistance and maintaining stable conductivity throughout the electrolyzer's lifetime. This dual role, safeguarding substrate and boosting overall efficiency, makes plantinum coatings a key enabler of long-term, high performance hydrogen generation.

 

As electrolyzer technology advances, so do the requirements for coatings. From reducing precious metal loading to enabling higher current densities and longer lifetimes, the future of hydrogen production depends on innovative surface engineering. At Bekaert, we deliver coating technologies designed for today's demands - ready for the challenges of tomorrow.