The effect of CCH bubble distribution on power generation performance of a direct formic acid fuel cell

K. Watanabe, T. Araki, G. Inoue, R. Mochizuki, T. Tsujiguchi

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

Abstract

Direct formic acid fuel cells (DFAFCs) have received considerable attention because they can generate higher power density compared with other direct liquid fuel cells. However, when the generated CO2 bubbles are retained in the anode porous transport layer (PTL), the performance of DFAFCs deteriorates. In this study, power generation characteristics of DFAFCs using two types of PTL, viz. carbon paper and carbon cloth, were investigated. It was found that the maximum current density is about 60 mA/cm2 higher with the carbon cloth than with the carbon paper. The CO2 bubble distributions in anode PTLs were visualized during the operation using X-ray computed tomography, and the visualized images showed that the PTL structure affected the CO2 bubble distribution, and that the transport paths of formic acid through liquid phase are tortured. Thus, it could be concluded that the transport characteristics of CO2 bubbles affect the power generation characteristics of DFAFCs.

Original languageEnglish
Title of host publicationPolymer Electrolyte Fuel Cells and Electrolyzers 19, PEFC and E 19
EditorsK. Swider-Lyons, H. Uchida, F. Buechi, W. E. Mustain, B. S. Pivovar, P. N. Pintauro, A. Z. Weber, D. Jones, H. Gasteiger, C. A. Rice, P. Strasser, E. Kjeang, K. Shinohara, S. Mitsushima, Y.-T. Kim, T. J. Schmidt, J. M. Fenton, R. A. Mantz, B. Lakshmanan, H. Xu
PublisherElectrochemical Society Inc.
Pages335-340
Number of pages6
Edition8
ISBN (Electronic)9781607685395
DOIs
Publication statusPublished - Jan 1 2019
EventSymposium on Polymer Electrolyte Fuel Cells and Electrolyzers 19, PEFC and E 2019 - 236th ECS Meeting - Atlanta, United States
Duration: Oct 13 2019Oct 17 2019

Publication series

NameECS Transactions
Number8
Volume92
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Conference

ConferenceSymposium on Polymer Electrolyte Fuel Cells and Electrolyzers 19, PEFC and E 2019 - 236th ECS Meeting
CountryUnited States
CityAtlanta
Period10/13/1910/17/19

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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