---
_id: '7329'
abstract:
- lang: eng
  text: A novel measurement principle for measuring the current distribution in polymer
    electrolyte fuel cells (PEFCs) is introduced. It allows, in contrast to all other
    known techniques, for the first time for a resolution smaller than the channel/rib
    scale of the flow field in PEFCs. The current density is obtained by considering
    the electron conductors in the cell as a two-dimensional resistor with the voltage
    drop caused by the current. The method was applied to a cell operated on oxygen
    up to high current densities. The results show that the ohmic resistances govern
    the current distribution in the low current regime, whereas mass transport limitations
    hamper the current production under the land at high loads.
article_processing_charge: No
article_type: original
author:
- first_name: Stefan Alexander
  full_name: Freunberger, Stefan Alexander
  id: A8CA28E6-CE23-11E9-AD2D-EC27E6697425
  last_name: Freunberger
  orcid: 0000-0003-2902-5319
- first_name: Mathias
  full_name: Reum, Mathias
  last_name: Reum
- first_name: Alexander
  full_name: Wokaun, Alexander
  last_name: Wokaun
- first_name: Felix N.
  full_name: Büchi, Felix N.
  last_name: Büchi
citation:
  ama: Freunberger SA, Reum M, Wokaun A, Büchi FN. Expanding current distribution
    measurement in PEFCs to sub-millimeter resolution. <i>Electrochemistry Communications</i>.
    2006;8(9):1435-1438. doi:<a href="https://doi.org/10.1016/j.elecom.2006.05.032">10.1016/j.elecom.2006.05.032</a>
  apa: Freunberger, S. A., Reum, M., Wokaun, A., &#38; Büchi, F. N. (2006). Expanding
    current distribution measurement in PEFCs to sub-millimeter resolution. <i>Electrochemistry
    Communications</i>. Elsevier. <a href="https://doi.org/10.1016/j.elecom.2006.05.032">https://doi.org/10.1016/j.elecom.2006.05.032</a>
  chicago: Freunberger, Stefan Alexander, Mathias Reum, Alexander Wokaun, and Felix
    N. Büchi. “Expanding Current Distribution Measurement in PEFCs to Sub-Millimeter
    Resolution.” <i>Electrochemistry Communications</i>. Elsevier, 2006. <a href="https://doi.org/10.1016/j.elecom.2006.05.032">https://doi.org/10.1016/j.elecom.2006.05.032</a>.
  ieee: S. A. Freunberger, M. Reum, A. Wokaun, and F. N. Büchi, “Expanding current
    distribution measurement in PEFCs to sub-millimeter resolution,” <i>Electrochemistry
    Communications</i>, vol. 8, no. 9. Elsevier, pp. 1435–1438, 2006.
  ista: Freunberger SA, Reum M, Wokaun A, Büchi FN. 2006. Expanding current distribution
    measurement in PEFCs to sub-millimeter resolution. Electrochemistry Communications.
    8(9), 1435–1438.
  mla: Freunberger, Stefan Alexander, et al. “Expanding Current Distribution Measurement
    in PEFCs to Sub-Millimeter Resolution.” <i>Electrochemistry Communications</i>,
    vol. 8, no. 9, Elsevier, 2006, pp. 1435–38, doi:<a href="https://doi.org/10.1016/j.elecom.2006.05.032">10.1016/j.elecom.2006.05.032</a>.
  short: S.A. Freunberger, M. Reum, A. Wokaun, F.N. Büchi, Electrochemistry Communications
    8 (2006) 1435–1438.
date_created: 2020-01-15T12:23:22Z
date_published: 2006-09-01T00:00:00Z
date_updated: 2021-01-12T08:13:06Z
day: '01'
doi: 10.1016/j.elecom.2006.05.032
extern: '1'
intvolume: '         8'
issue: '9'
language:
- iso: eng
month: '09'
oa_version: None
page: 1435-1438
publication: Electrochemistry Communications
publication_identifier:
  issn:
  - 1388-2481
publication_status: published
publisher: Elsevier
quality_controlled: '1'
status: public
title: Expanding current distribution measurement in PEFCs to sub-millimeter resolution
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 8
year: '2006'
...