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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

 

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

All your Questions Answered

  1. What product dimensions are available?

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    Limiting to standard products:

    • 210 x 290 mm
    • 430 x 580 mm

    You can request a quote on our website.

    Larger and custom sizes are available for industrial quantities. Please contact us with your questions.

  2. What are the tolerances on dimensions, length, width and thickness?

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    The standard tolerances which are applicable to the dimensions of our sample materials: ± 4mm.

    For commercial projects, we have custom cutting technologies with tolerances of ± 0,5 mm and a thickness tolerance of ± 10%.

  3. Does the coating affect porosity?

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    No, the platinum coating maintains porosity and surface characteristics.

  4. What is the new name of the materials I have ordered in the past?

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    We've changed our material codes in 2024. If you're looking for the old material codes, you can find them in this table, together with the new material codes.

    You can request a quote on our website.

    Material Code (before 2024)   Material Code (2024) Thickness Thickness Porosity Surface Area
    Currento® 2NI 06-0,100   Currento® PTL Ni-66/100 (215 x 290 mm) 0,10 mm 0.004 inch 66% Normal
      Currento® PTL Ni-66/100 (430 x 580 mm)
    Currento® 2NI 06-0,200   Currento® PTL Ni-83/200 (215 x 290 mm) 0,20 mm 0.008 inch 83%
      Currento® PTL Ni-83/200 (430 x 580 mm)
    Currento® 2NI 18-0,250   Currento® PTL Ni-60/250 (215 x 290 mm) 0,25 mm 0.010 inch 60%
      Currento® PTL Ni-60/250 (430 x 580 mm)
    Currento® 2NI 30-0,500   Currento® PTL Ni-66/500 (215 x 290 mm) 0,50 mm 0.020 inch 66%
      Currento® PTL Ni-66/500 (430 x 580 mm)
    Currento® 2NI 18-0,500   Currento® PTL Ni-80/500 (215 x 290 mm) 80%
      Currento® PTL Ni-80/500 (430 x 580 mm)
    Currento® 2NI 30-1,000   Currento® PTL Ni-83/1000 (215 x 290 mm) 1,00 mm 0.039 inch 83%
      Currento® PTL Ni-83/1000 (430 x 580 mm)
    -   Currento® PTL INC 79/600 (210 x 297 mm) 0,60 mm 0.024 inch 79% Medium
      Currento® PTL INC 79/600 (430 x 580 mm)
    -   Currento® PTL NI HR 78/300 (210 x 297 mm) 0,30 mm 0.012 inch 78% High
      Currento® PTL NI HR 78/300 (430 x 580 mm)
    -   Currento® PTL NI HR 82/500 (210 x 297 mm) 0,50 mm 0.020 inch 82%
      Currento® PTL NI HR 82/500 (430 x 580 mm)
    -   Currento® PTL INC 82/500 (210 x 297 mm)
      Currento® PTL INC 82/500 (430 x 580 mm)
                 
    Currento® 60 BL3   Currento® PTL SS-74/145 (210 x 297 mm) 0,15 mm 0.006 inch 74% Normal
    Currento® PTL SS-74/145 (430 x 580 mm)
    - Currento® PTL SS-85/1000 (210 x 297 mm) 1,00 mm 0.039 inch 85%
    Currento® PTL SS-85/1000 (430 x 580 mm)
    Currento® 20 AL3 Currento® PTL SS-82/500 (210 x 297 mm) 0,50 mm 0.020 inch 82% Medium
    Currento® PTL SS-82/500 (430 x 580 mm)
    Currento® 10 BL3 Currento® PTL SS-81/200 (210 x 297 mm) 0,20 mm 0.008 inch 81% High
    Currento® PTL SS-81/200 (430 x 580 mm)
    Currento® 10 FP3 Currento® PTL SS-71/260 (210 x 297 mm) 0,26 mm 0.010 inch 71%
    Currento® PTL SS-71/260 (430 x 580 mm)
    Currento® 10 AL3 Currento® PTL SS-78/300 (210 x 297 mm) 0,30 mm 0.012 inch 78%
    Currento® PTL SS-78/300 (430 x 580 mm)
    -   Currento® PTL SS-62/410 (210 x 297 mm) 0,41 mm 0.016 inch 62%
      Currento® PTL SS-62/410 (430 x 580 mm)
                 
    Currento® 2GDL6-0,150   Currento® PTL Ti-56/150 (215 x 290 mm) 0,15 mm 0.006 inch 56% Normal
      Currento® PTL Ti-56/150 (430 x 580 mm)
    Currento® 2GDL10-0,250   Currento® PTL Ti-56/250 (215 x 290 mm) 0,25 mm 0.010 inch
      Currento® PTL Ti-56/250 (430 x 580 mm)
    Currento® 2GDL20-0,500   Currento® PTL Ti-56/500 (215 x 290 mm) 0,50 mm 0.020 inch
      Currento® PTL Ti-56/500 (430 x 580 mm)
    Currento® 2GDL20-1,000   Currento® PTL Ti-56/1000 (215 x 290 mm) 1,00 mm 0.039 inch
      Currento® PTL Ti-56/1000 (430 x 580 mm)
    -   Currento® PTL Ti-66/200 (215 x 290 mm) 0,20 mm 0.008 inch 66%
      Currento® PTL Ti-66/200 (430 x 580 mm)
    -   Currento® PTL Ti-67/200 (215 x 290 mm) 0,20 mm 0.008 inch 67%
      Currento® PTL Ti-67/200 (430 x 580 mm)
    -   Currento® PTL Ti-68/350 (215 x 290 mm) 0,35 mm 0.014 inch 68%
      Currento® PTL Ti-68/350 (430 x 580 mm)
    -   Currento® PTL Ti-70/750 (215 x 290 mm) 0,75 mm 0.030 inch 70%
      Currento® PTL Ti-70/750 (430 x 580 mm)
    -   Currento® PTL Ti-77/2000 (215 x 290 mm) 2,00 mm 0.079 inch 77%
      Currento® PTL Ti-77/2000 (430 x 580 mm)
    -   Currento® PTL Ti-78/2000 (215 x 290 mm) 2,00 mm 0.079 inch 78%
      Currento® PTL Ti-78/2000 (430 x 580 mm)
                 
    No separate material code existed   Currento® PTL Ti-56/150 PT200 (220 x 290 mm) 0,15 mm 0.006 inch 56% Normal
      Currento® PTL Ti-56/150 PT200 (440 x 550 mm)
      Currento® PTL Ti-56/250 PT200 (220 x 290 mm) 0,25 mm 0.010 inch
      Currento® PTL Ti-56/250 PT200 (440 x 550 mm)
      Currento® PTL Ti-56/500 PT200 (220 x 290 mm) 0,50 mm 0.020 inch
      Currento® PTL Ti-56/500 PT200 (440 x 550 mm)

  5. Which coating technology is used for platinum (Pt) coating?

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    Currently we offer electroplating technology as the only option for platinum coating.

    Our R&D team is actively investigating the durability of Physical Vapor Deposition (PVD) technology.

  6. Can the Titanium products be coated with Platinum (Pt) or Gold (Au)?

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    We provide protective, double-sided platinum coatings with a standard coating thickness of 200 nm nominal.

    Custom coating specifications are available for industrial quantities.

    Find the more information on platinum coated titanium PTL.

  7. Why add platinum to titanium PTLs?

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    Platinum reduces contact resistance and protects against oxide buildup in acidic PEM environments.

  8. Can the titanium PTL be coated with platinum?

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    Yes, we offer platinum coatings (200 nm nominal thickness) to reduce contact resistance and improve performance.

  9. Can the thickness be adapted to fit the cell design?

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    Our standard portfolio is available in the following thickness range: (Pt coated) Titanium PTL: 0,15 - 0,50 mm | 5.9 - 19.7 µin

    You can request a quote on our website.

    For commercial projects the thickness can be adapted, but this will have an impact on porosity. 

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