Berkeley Lab

Advanced Diagnostics in Fuel Cells

Of particular interest is developing diagnostics for the various transport and material properties for fuel-cell components.  Such techniques allow for better understanding and providing phenomenological and parameters for the modeling activities.  Recent developments and capabilities include:

  1. Capillary pressure – saturation curves for fuel-cell diffusion media and catalyst layers
  2.  Effective gas-phase diffusivities of diffusion media as a function of saturation
  3. Droplet adhesion force measurements of fuel-cell gas-diffusion layers
  4. Thermal conductivity
  5. Freeze kinetics in fuel-cell materials
  6. Water uptake in fuel-cell membranes and catalyst-layer ionomer
  7. X-ray analysis of membrane and ionomer, including
    a. Grazing-incidence small-angle x-ray scattering (GISAXS) for ionomer thin films
    b. Small-angle x-ray scattering (SAXS) for membrane structure
    c. Wide-angle x-ray scattering (WAXS) for membrane crystallinity
  8. Computed x-ray tomography for membrane water content and liquid-water in gas-diffusion layers
  9. Conducting atomic force microscopy
  10. Material mechanical properties
  11. Traditional analytical techniques including electron microscopy, elemental analysis, etc.

For more information, contact Adam Weber.