This title appears in the Scientific Report :
2008
Please use the identifier:
http://dx.doi.org/10.1016/j.jpowesour.2007.08.056 in citations.
Measurement of the current distribution in a direct methanol fuel cell - Confirmation of parallel galvanic and electrolytic operation within one cell
Measurement of the current distribution in a direct methanol fuel cell - Confirmation of parallel galvanic and electrolytic operation within one cell
Current production in fuel cells is typically unequally distributed along the cell surface due to inhomogeneous concentration of reactants and temperature. The inhomogeneities in fuel cells can result in reduced output power and accelerated ageing. To quantify the inhomogeneities a measurement syste...
Saved in:
Personal Name(s): | Sauer, D. U. |
---|---|
Sanders, T. / Fricke, B. / Baumhöfer, T. / Wippermann, K. / Kulikovsky, A. A. / Schmitz, H. / Mergel, J. | |
Contributing Institute: |
Brennstoffzellen; IEF-3 JARA-ENERGY; JARA-ENERGY |
Published in: | Journal of power sources, 176 (2008) S. 477 - 483 |
Imprint: |
New York, NY [u.a.]
Elsevier
2008
|
Physical Description: |
477 - 483 |
DOI: |
10.1016/j.jpowesour.2007.08.056 |
Document Type: |
Journal Article |
Research Program: |
Rationelle Energieumwandlung |
Series Title: |
Journal of Power Sources
176 |
Subject (ZB): | |
Publikationsportal JuSER |
Current production in fuel cells is typically unequally distributed along the cell surface due to inhomogeneous concentration of reactants and temperature. The inhomogeneities in fuel cells can result in reduced output power and accelerated ageing. To quantify the inhomogeneities a measurement system has been developed which allows measuring the local distribution of current and temperature in hydrogen and direct methanol fuel cells. With this system we are able to directly observe the coexistence of galvanic and electrolytic domains in a single channel direct methanol fuel cell (the electrolytic domain is the domain where electrolysis occurs in contrast to the galvanic domain where the fuel cell process takes place). The measurement device also allows for the measurement locally resolved impedance spectra. (c) 2007 Elsevier B.V. All rights reserved. |