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Methods to Measure the Electrical Resistances of a Gas Diffusion Layer Under Mechanical Compression.
- Source :
- Fuel Cells; Jun2024, Vol. 24 Issue 3, p1-8, 8p
- Publication Year :
- 2024
-
Abstract
- In a proton exchange membrane fuel cell (FC), the gas diffusion layer (GDL) is identified as the component that is most affected by mechanical compression. In this article, a particular focus is provided on the methods to measure the three main electrical parameters—contact resistance, through‐plane resistance, and in‐plane resistance—of the GDL under compression. A nonlinear decrease of these resistances under compression is typically observed. In particular, an important decrease is observed from 0 to 2 MPa, then a lower one above 2 MPa. The smallest contact and in‐plane resistances are measured for the graphitized straight carbon papers analyzing GDL resistances under compression gives a first approach to explaining ohmic losses in FCs as a large part of these losses is related to the GDL. This review would be helpful for researchers in better understanding ohmic losses and establishing a database of main GDL electrical resistances and their variations according to several operating parameters. These data could be used in design models to optimize GDL properties. [ABSTRACT FROM AUTHOR]
- Subjects :
- CARBON paper
Subjects
Details
- Language :
- English
- ISSN :
- 16156846
- Volume :
- 24
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- Fuel Cells
- Publication Type :
- Academic Journal
- Accession number :
- 178132150
- Full Text :
- https://doi.org/10.1002/fuce.202200102