Sigracet 22 BB

Brand: SGL Carbon
Product Code: 1592022


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Sigracet 22 BB is a non-woven carbon paper gas diffusion media.  It has a total thickness of 165 um (microns).  SGL BB is a great low-cost alternative to conventional woven carbon paper Gas Diffusion Layer (GDL) and Gas Diffusion Media materials.

The Sigracet Carbon Fiber Paper 22 Series is intended to combine the required production robustness and the excellent performance properties.  Stack developers and assemblers are benefiting from the following greatly improved characteristics:

  • Greatly improved homogeneity inter-lot and intra-lot.  The overall variability has been shown to be better than +/- 10% (2 sigma)
  • Greatly improved surface flatness
  • Greatly reduced occurrence of faulty spots on a roll
  • Best performance under various operating conditions

Sigracet 22 BB is currently only available in 45 x 40 cm sheets and has a current lead time of approximately 3 weeks.

Gas Diffusion Layer Properties
Material Type Carbon Fiber Paper
Thickness 165 microns +/- 20 microns
Areal Weight 75 +/- 15 g/m²
Electrical Resistivity < 10 mΩcm² (milliohms cm²)
IP Pressure Drop < 1 bar

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