KUKU

KU ScholarWorks

  • myKU
  • Email
  • Enroll & Pay
  • KU Directory
    • Login
    View Item 
    •   KU ScholarWorks
    • Engineering
    • Chemical & Petroleum Engineering Scholarly Works
    • View Item
    •   KU ScholarWorks
    • Engineering
    • Chemical & Petroleum Engineering Scholarly Works
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Effect of electrode configuration and electronic conductivity on current density distribution measurements in PEM fuel cells

    Thumbnail
    View/Open
    revised paper - contact resistance.pdf (612.2Kb)
    Issue Date
    2004-09-03
    Author
    Natarajan, Dilip
    Van Nguyen, Trung
    Publisher
    ELSEVIER SCIENCE BV
    Format
    626972 bytes
    Type
    Article
    Metadata
    Show full item record
    Abstract
    Current density and potential distribution measurements were conducted using a segmented current collector and flow field setup on membrane electrode assemblies prepared with segmented and unsegmented electrodes made from two different types of commercially available gas diffusion layers. Both galvanostatic and potentiostatic discharge modes were employed. Irrespective of the type of gas diffusion layer, when a common electrode was employed, significant performance variations were encountered between current collector segments in the constant voltage mode, while the segment to segment variations were minimal in the constant current mode. Both types of discharge modes showed negligible variations between segments in the case of segmented electrode. A simple mathematical model was developed to assist in the interpretation of the experimental results. The differences in contact resistances between the current collectors and the gas diffusion layer, especially on the cathode side have been identified as the primary reason for the experimentally observed behavior. Based on the results presented here, segmenting the electrode along with the current collector is recommended for current distribution studies. When using a common electrode, only the galvanostatic mode is preferred to minimize contact artifacts. (C) 2004 Elsevier B.V. All rights reserved.
    URI
    http://hdl.handle.net/1808/298
    DOI
    https://doi.org/10.1016/j.jpowsour.2004.03.063
    Collections
    • Chemical & Petroleum Engineering Scholarly Works [177]
    Citation
    Natarajan, D; Van Nguyen, T. Effect of electrode configuration and electronic conductivity on current density distribution measurements in PEM fuel cells. JOURNAL OF POWER SOURCES. September 3 2004. 135:95-109

    Items in KU ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.


    We want to hear from you! Please share your stories about how Open Access to this item benefits YOU.


    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

    Browse

    All of KU ScholarWorksCommunities & CollectionsThis Collection

    My Account

    LoginRegister

    Statistics

    View Usage Statistics

    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

    The University of Kansas
      Contact KU ScholarWorks
    Lawrence, KS | Maps
     
    • Academics
    • Admission
    • Alumni
    • Athletics
    • Campuses
    • Giving
    • Jobs

    The University of Kansas prohibits discrimination on the basis of race, color, ethnicity, religion, sex, national origin, age, ancestry, disability, status as a veteran, sexual orientation, marital status, parental status, gender identity, gender expression and genetic information in the University’s programs and activities. The following person has been designated to handle inquiries regarding the non-discrimination policies: Director of the Office of Institutional Opportunity and Access, IOA@ku.edu, 1246 W. Campus Road, Room 153A, Lawrence, KS, 66045, (785)864-6414, 711 TTY.

     Contact KU
    Lawrence, KS | Maps