Characterization of Thermal and Electronic Conductivities of Catalyst Layers of Polymer Electrolyte Membrane Fuel Cells

This work proposes new and accurate systematic methodologies for ex situ measurements of through‐plane thermal and in‐plane electronic conductivities of catalyst layers (CLs) of polymer electrolyte membrane fuel cells (PEMFC). The developed methods are based on measurements of different thicknesses/...

Full description

Saved in:
Bibliographic Details
Published in:Fuel cells (Weinheim an der Bergstrasse, Germany) Germany), 2019-10, Vol.19 (5), p.550-560
Main Authors: Ahadi, M., Jankovic, J., Tam, M., Zahiri, B., Saha, M. S., Stumper, J., Bahrami, M.
Format: Article
Language:English
Subjects:
Catalyst Layer, Electronic Conductivity
Catalysts
Conductivity
Electrolytes
Electrolytic cells
Fuel Cells
Hot‐pressing
Measurement methods
Microstructure
Polymer Electrolyte Membrane Fuel Cell
Polymers
Porous materials
Proton exchange membrane fuel cells
Substrate
Substrates
Thermal Conductivity
Thermodynamic properties
Thin Films
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This work proposes new and accurate systematic methodologies for ex situ measurements of through‐plane thermal and in‐plane electronic conductivities of catalyst layers (CLs) of polymer electrolyte membrane fuel cells (PEMFC). The developed methods are based on measurements of different thicknesses/lengths of a CL on different substrates. Suitability of the proposed methods is confirmed through a set of microstructural properties measurements on a typical CL design to ensure the measured CLs would be representative of CLs in a real fuel cell product. Conductivity measurements of two CL designs with different compositions and microstructures confirm capability of the developed procedures to track structural changes in CLs. The present characterization platform is not limited to CLs and may be used for other composite porous materials with similar structures.
ISSN:1615-6846
1615-6854
DOI:10.1002/fuce.201800173