The Proceedings of the Thermal Engineering Conference
Online ISSN : 2424-290X
2018
Session ID : 0071
Conference information

Ionomer Distribution Formation in PEFC Catalyst Layer by Pulse Injection and Dry Atmosphere Control
*Shogo IrikawaTakahiro SuzukiShohji Tsushima
Author information
CONFERENCE PROCEEDINGS FREE ACCESS

Details
Abstract

A pulse injection method was demonstrated to control ionomer distribution in catalyst layers of polymer electrolyte fuel cells (PEFCs). Ionomer dispersion was intermittently sprayed onto the catalyst layers and then was dried in a controlled atmosphere in order to fabricate structurally-controlled catalyst layers. Through-plane ionomer distributions of the catalyst layers analyzed by energy dispersive X-ray spectroscopy revealed that formation of an ionomer layer on the catalyst layer was controlled by adjusting an injection time. It was also shown that spayed ionomer could diffuse into the catalyst layer primarily filled with n-propyl alcohol, resulting in a graded ionomer distribution in the catalyst layer.

Content from these authors
© 2018 The Japan Society of Mechanical Engineers
Previous article Next article
feedback
Top