Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    Nernst voltage losses in planar fuel cells caused by changes in chemical composition: effects of operating parameters

    Access Status
    Fulltext not available
    Authors
    Sharma, Ashwini Kumar
    Ahmed, Khaliq
    Birgersson, E.
    Date
    2018
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Sharma, A.K. and Ahmed, K. and Birgersson, E. 2018. Nernst voltage losses in planar fuel cells caused by changes in chemical composition: effects of operating parameters. Ionics.24 (7): pp. 2047–2054.
    Source Title
    Ionics
    DOI
    10.1007/s11581-018-2454-1
    ISSN
    0947-7047
    School
    Department of Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/68010
    Collection
    • Curtin Research Publications
    Abstract

    Conventionally, the reversible potential at inlet conditions is considered to be the ideal voltage for a fuel cell. However, the reversible potential in planar cells varies along the cell length due to changes in gas composition caused by consumption of fuel and oxidant. This contributes to voltage losses, referred to as Nernst losses, compared to the reversible potential at the inlet of the cell. In the conventional breakdown of cell voltage losses, the variation of reversible potential is not accounted for. To estimate the “true” losses, this needs to be accounted for by employing calculations of the reversible potential with changing composition. This paper quantifies such losses in the context of solid oxide fuel cells (SOFCs) for which they are found to contribute significantly, in the range of 25 to 33% of the total voltage losses. The Nernst equation for fuel cell operation is analyzed and analytical expressions for Nernst losses are derived. The latter allows prediction of the effects of operating parameters which are later verified with an isothermal model of the SOFC.

    Related items

    Showing items related by title, author, creator and subject.

    • Bus voltage ranking and voltage stability enhancement for unbalanced multiphase networks
      Juanuwattanakul, Parachai (2012)
      Voltage instabilities and subsequent system collapses are considered as growing concerns in modern multiphase distribution networks as they are progressively forced to operate closer to their stability limits due to many ...
    • Cyclic polarization enhances the operating stability of La0.57Sr0.38Co0.18Fe0.72Nb0.1O3-δ oxygen electrode of reversible solid oxide cells
      He, Z.; Zhang, L.; He, S.; Ai, N.; Chen, K.; Shao, Y.; Jiang, San Ping (2018)
      Reversing the direction of polarization current is essential for reversible solid oxide cells technologies, but its effect on cobaltite based perovskite oxygen electrodes is largely unknown. Herein, we report the operating ...
    • Ethylene glycol as a new sustainable fuel for solid oxide fuel cells with conventional nickel-based anodes
      Qu, J.; Wang, Wei; Chen, Y.; Wang, F.; Ran, Ran; Shao, Zongping (2015)
      In this study, renewable ethylene glycol (EG) was exploited as a potential fuel for solid oxide fuel cells (SOFCs) with conventional nickel yttria-stabilized zirconia (Ni–YSZ) cermet anodes for sustainable electric power ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.