Full Content is available to subscribers

Subscribe/Learn More  >

An Impedance Spectroscopy Study of a Micro PEMFC With Different Flow Fields

[+] Author Affiliations
Sheng-Huang Yang, Shou-Shing Hsieh, Chih-Lun Feng

National Sun Yat-Sen University, Kaohsiung, Taiwan, R.O.C.

Paper No. FUELCELL2006-97134, pp. 1123-1127; 5 pages
  • ASME 2006 4th International Conference on Fuel Cell Science, Engineering and Technology
  • ASME 2006 Fourth International Conference on Fuel Cell Science, Engineering and Technology, Parts A and B
  • Irvine, California, USA, June 19–21, 2006
  • Conference Sponsors: Nanotechnology Institute
  • ISBN: 0-7918-4247-9 | eISBN: 0-7918-3780-7
  • Copyright © 2006 by ASME


The H2 /air micro PEMFCs with three different flow fields were designed and fabricated in-house through a deep UV lithography technique. SU-8 photoresist was used as microstructure material for fuel cell flow-field plates. Different operational parameters were examined by electrochemical impedance spectroscopy (EIS). The operational parameters include cell operating temperature (25°C, 35°C, and 50°C), back pressures (1atm, 1.5atm, and 2atm) of reactant gases on anode site, and three different flow fields configurations (mesh, interdigitated, and serpentine). The effect of the above parameters on high frequency, medium frequency, and low frequency arc were found. The influence in terms of impedance on dynamic response of the present H2 /air micro fuel cell under different operating conditions and flow geometry can be quantitatively measured. Results are presented in the form of the polarization VI curves, PI curves, and impedance spectra under different operating conditions. The possible transport mechanisms associated with the parametric effects were discussed. In addition, it was found that, among the three flow patterns considered, significant improvements can be reached with a specified flow geometry.

Copyright © 2006 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In