Respective Influence of Ionomer Content on Local and Bulk Oxygen Transport Resistance in the Catalyst Layer of PEMFCs with Low Pt Loading
Year: 2019
Type: article
Abstract: Ionomer is a key material of proton exchange membrane fuel cells, not simply as it is responsible for proton conduction but as it affects both the local and bulk oxygen transport process in catalyst layers. In this work, a dual-layer cathode design is used to measure the local and bulk transport resistances in the catalyst layer with various ionomer contents in order to provide quantitative details about the effect of ionomer on oxygen transport process. The results reveal that both local and bulk resistances would enlarge with an increase in ionomer content which can be attributed to the variation of ionomer morphology.
DOI: 10.1149/2.0401904jes
Institution: Shanghai Jiao Tong University
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2917992605