Parameter Optimization in the Drying Process of Catalyst Ink for PEFC Electrode Films with Few Cracks

Kohei Nagai, Keisuke Nagato, Takayuki Osa, Takuto Araki, Gen Inoue, Takuya Tsujiguchi, Yoshiyuki Kuroda, Morio Tomizawa, Masato Kurosu

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

Abstract

Fabrication of the catalytic layers in polymer electrolyte fuel cells (PEFCs) typically involves a powder-film drying process, in which material ink is prepared, coated, and then dried. The process exhibits complex phenomena and requires adjustments of a huge number of parameters to control each phenomenon. We applied Bayesian optimization to determine the temperature profile during the drying process, to obtain electrodes with smooth surfaces. The results suggest that pulsed heat treatments were more effective in smoothening of surface than in maintaining a low temperature. Further, we investigated the effect of pulsed heat treatments and discussed the mechanism of ink drying.

Original languageEnglish
Title of host publication240th ECS Meeting - Materials for Low Temperature Electrochemical Systems 7
PublisherIOP Publishing Ltd.
Pages17-23
Number of pages7
Edition9
ISBN (Electronic)9781607685395
DOIs
Publication statusPublished - 2021
Event240th ECS Meeting - Orlando, United States
Duration: Oct 10 2021Oct 14 2021

Publication series

NameECS Transactions
Number9
Volume104
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Conference

Conference240th ECS Meeting
Country/TerritoryUnited States
CityOrlando
Period10/10/2110/14/21

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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