Neutron Radiography Project

Project Description

We are using steady state imaging techniques based on neutron radiography for in situ fuel cell diagnostics. Through plane neutron radiography (neutron beam perpendicular to the membrane plane) can resolve the distribution of liquid water over the fuel cell area. This technique has been applied for several years at PSI. To resolve the distribution of water across the fuel cell structure, in plane imaging has to be used, which implies very high requirements on resolution. Recent improvements of the imaging method, pixel resolution of a low as 2.5 μm could be reached.

Research Team

  • Pierre Boillat, Head
  • Magali Cochet, Scientist
  • Antoni Forner Cuenca, PhD Student
  • Maria Victoria Manzi Orezzoli, PhD Student
  • Muriel Siegwart, PhD Student
  • Dirk Scheuble, Engineer

Publications (2011-2014)

For previous publications see Publications Annual

  • Evaluation of neutron imaging for measuring phosphoric acid distribution in high temperature PEFCs P. Boillat, J. Biesdorf, P. Oberholzer, A. Kaestner, T.J. Schmidt
    J. Electrochem. Soc. 161 (3), F192-F198 (2014)
    DOI: 10.1149/2.023403jesOG-5420
  • Local characterization of PEFCs by differential cells: systematic variations of current and asymmetric relative humidity P. Oberholzer, P. Boillat
    J. Electrochem. Soc. 161 (1), F139-F152 (2014)
    DOI: 10.1149/2.080401jesOG-5420
  • Mass transport in polymer electrolyte fuel cells F.N. Büchi, P. Boillat
    Encyclopedia of Applied Electrochemistry, Springer Science + Business Media LLC, New York, R.F. Savinell, K. Ota, G, Krysa (Eds.), (2013).
    DOI: 10.1007/SpringerReference_303651OG-5420 , OG-5422
  • In situ diffusimetry of porous media in polymer electrolyte fuel cells using transient 2H labeling and neutron imaging P. Oberholzer, P. Boillat
    J. Phys. Chem. C 117 (39), 19945–19954 (2013).
    DOI: 10.1021/jp4045435OG-5420
  • Characterizing Local O2 Diffusive Losses in GDLs of PEFCs Using Simplified Flow Field Patterns (“2D”,“1D”,“0D”) P. Oberholzer, P. Boillat, A. Kaestner, E. H. Lehmann, G. G. Scherer, T. J. Schmidt, and A. Wokaun
    Journal of The Electrochemical Society 160 (6), F659-F669 (2013).
    DOI: 10.1149/2.119306jesOG-5420
  • An electrochemical method for high accuracy measurements of water transfer in fuel cells P. Boillat, P. Oberholzer, F. Neuschütz, T.J. Schmidt, A. Wokaun
    Electrochemistry Communications 22 (2012) 12-15
    DOI: 10.1016/j.elecom.2012.05.019OG-5420
  • Impact of water onPEFC performance evaluated by neutron imaging combined with pulsed helox operation P. Boillat, P. Oberholzer, A. Kaestner, R. Siegrist, E.H. Lehmann, G.G. Scherer, A. Wokaun
    Journal of the Electrochemical Society 159 (7) F210-F218 (2012)
    DOI: 10.1149/2.017207jesOG-5420
  • Simultaneous neutron imaging of six operating PEFCs: experimental set-up and study of the MPL effect P. Oberholzer, P. Boillat, R. Siegrist, A. Kästner, E.H. Lehmann, G.G. Scherer, A. Wokaun
    Electrochem. Commun. 20, 67 (2012)
    DOI: 10.1016/j.elecom.2012.03.038OG-5420
  • Cold-start of a PEFC visualized with high resolution dynamic in-plane neutron imaging P. Oberholzer, P. Boillat, R. Siegrist, R. Perego, A. Kästner, E.H. Lehmann, G.G. Scherer, A. Wokaun
    J. Electrochem. Soc. 159, B235 (2012)
    DOI: 10.1149/2.085202jesOG-5420
  • Neutron Imaging P. Boillat, G.G. Scherer
    Chapter 12: in H. Wang, X.Z. Yuan, H.Li, Handbook of PEM Fuel Cell Durability, Volume 2: PEM Fuel Cell Diagnostic Tools, Taylor & Francis Group, LLC, CRC (2011).
    DOI: 10.1201/b11100-14OG-5420
  • Using 2H labeling with neutron radiography for the study of solid polymer electrolyte water transport properties P. Boillat, P. Oberholzer, B.C. Seyfang, A. Kästner, R. Perego, G.G. Scherer, E.H. Lehmann, A. Wokaun
    J. Phys.: Condens. Matter 23, 234108 (2011).
    DOI: 10.1088/0953-8984/23/23/234108OG-5420