Papers

Dec 1, 2023

Analyzing elementary electrode reactions for protonic ceramic fuel cells by proton/deuteron isotope effect

Journal of Power Sources
  • Yuji Okuyama
  • ,
  • Keita Kasuga
  • ,
  • Masaki Shimomura
  • ,
  • Yuichi Mikami
  • ,
  • Kosuke Yamauchi
  • ,
  • Tomohiro Kuroha
  • ,
  • Hirofumi Sumi

Volume
586
Number
Language
Publishing type
Research paper (scientific journal)
DOI
10.1016/j.jpowsour.2023.233647

This study elucidates the elementary reactions occurring within the electrode impedance of proton-conducting ceramic fuel cells, using the distribution of relaxation times and the relaxation process involved in proton/deuteron substitution. We identified impedance components attributable to the steam production reaction of protons crossing the electrolyte on the triple phase boundary by observing the change in these components when the gas on the anode was switched from light hydrogen to heavy hydrogen during the power generation and shutdown phases of the fuel cell. It was noted that the steam formation reaction presents the highest resistance in proton-conducting ceramic fuel cells, implying the need for a catalyst to enhance this reaction within the electrode.

Link information
DOI
https://doi.org/10.1016/j.jpowsour.2023.233647
Scopus
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85173161442&origin=inward
Scopus Citedby
https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85173161442&origin=inward
ID information
  • DOI : 10.1016/j.jpowsour.2023.233647
  • ISSN : 0378-7753
  • SCOPUS ID : 85173161442

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