Investigation of a Correlation Between IV Performance and Cathode Structure for MEAs Using Mesoporous Carbon Supports

Daichi Yasufuku, Mayumi Nagayama, Kazunari Sasaki, Akari Hayashi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The cathode catalyst layer in PEFC plays an important role for further improvement of performance and durability toward heavy-duty vehicles. Since carbon is the main component to define the porous cathode structure, realization of optimal structure of carbon is desired. Therefore, in this study, using lab-made Pt/mesoporous carbon and Pt/mesoporous carbon fiber, and commercially available Pt/Ketjen Black as cathode materials, membrane electrode assemblies were made, and evaluated electrochemically and structurally. Then, a correlation between IV performance and three dimensional structure was investigated. From the three dimensionally reconstructed images, we found that large carbon particles most likely lead to higher ohmic resistance owing to interparticle resistance between the particles. Homogeneous distribution of large pores was found to lower concentration overvoltage.

Original languageEnglish
Title of host publicationECS Transactions
PublisherInstitute of Physics
Pages349-357
Number of pages9
Edition9
ISBN (Electronic)9781607685395
DOIs
Publication statusPublished - 2022
Event242nd ECS Meeting - Atlanta, United States
Duration: Oct 9 2022Oct 13 2022

Publication series

NameECS Transactions
Number9
Volume109
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Conference

Conference242nd ECS Meeting
Country/TerritoryUnited States
CityAtlanta
Period10/9/2210/13/22

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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