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Platinum Coating on Titanium PTL

Platinum Coating on Titanium PTL

Coated titanium contributes to a higher level of performance in PEM water electrolysis compared to non-coated titanium. Our titanium Porous Transport Layer can feature a platinum coating for optimal durability - as shown in the white layer on the image here. Noble metals like platinum reduce contact resistance while keeping conductivity elevated in acidic environments - even in thin layers. This ensures the stability and conductivity of PTLs, resulting in high connectivity and improved resistance to corrosion and oxidation.
 

Over time, the acidic environment of PEM causes the buildup of an added oxide layer. This will lead to the degradation of the component. But the addition of a platinum coating can prevent the formation of insulating Ti-oxide layers. This coating results in a direct contact between PTL and catalyst. By increasing connectivity, the platinum coated titanium offers enhanced conductivity and performance.

 

  • Titanium fiber structures maintain shape under pressure changes
  • Coated titanium performs well in acidic environments
  • Platinum coating protects against degradation

 

 
 
Thickness (mm / inch)
Porosity (%)

Pt Coated Titanium Product Portfolio

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Sparking innovation by forming bonds that last

Sparking innovation by forming bonds that last

Optimal catalyst activity is vital to the hydrogen production process. This requires near complete contact between the PTL and all active areas in the catalyst layer. Doing so produces an ideal electrical connection between the two. As such, it is crucial for the PTL’s surface to be smooth with small, even pore sizes. Pt-coatings improve interface characteristics by more homogeneous current distributions.

 

  • Coated titanium increases electrical connectivity with catalyst
  • Felt features smooth surface area and even pore sizes
  • Structural integrity maintains shape under irregular pressure
Features
  • Light platinum coating increases conductivity
  • Lends the outstanding corrosion resistance of noble metals 
  • Saves time, money and maintenance: no pre-stretching and fewer posts needed
  • Delivers on 15 years of production consistency

 

Advantages
  • Resistant to corrosion and oxidation
  • Coating reduces electrical contact resistance
  • Improved durability and lifespan
  • Coating reduces iridium dependency
Applications
  • Proton Exchange Membrane (PEM)
  • Acidic environments with a low pH

 

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Sintered metal fiber media have pore sizes in the µm-range.

  • Compared to sintered metal powder, higher porosity, and thus permeability, can be achieved at similar pore size.
  • Compared to metal foam, sintered metal fiber media enable a stepwise reduction in pore size and corresponding increase in surface area.
Product sheet - Currento® - Porous transport layer