Durability analysis on PEM water electrolyzers against the voltage fluctuation of wind power

Y. Honsho, M. Nagayama, K. Sasaki, A. Hayashi

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

Abstract

For the future combined system of the renewable and hydrogen energy, the actual voltage fluctuation from wind power was applied to a single PEM water electrolysis cell, whose durability was studied. I-V performance of the water electrolysis cell increased up to 96-hour voltage fluctuation and slightly decreased after that. One of the reasons for such initial increase was found to decrease in activation overvoltage owing to increase in electrochemical active surface area of IrO2 through redox cycles derived by voltage fluctuation. Regarding to decrease in I-V performance after 96 h, increase in concentration overvoltage derived by temporary accumulation of produced gas inside the small pores of the electrode was a main reason. Furthermore, suppression of degradation of IrO2 was found when the voltage fluctuates lower than 1.5 V, indicating a potential of the water electrolysis system directly using renewable energy in the future.

Original languageEnglish
Title of host publicationPRiME 2020
Subtitle of host publicationPolymer Electrolyte Fuel Cells and Electrolyzers 20 (PEFC and E 20)
EditorsK. Swider-Lyons, H. Uchida, P. N. Pintauro, W. Mustain, F. Buechi, B. S. Pivovar, C. A. Rice, J. M. Fenton, P. Strasser, K. E. Ayers, A. Z. Weber, R. A. Mantz, H. Xu, S. Mitsushima, E. Kjeang, T. J. Schmidt, B. Lakshmanan, A. Kusoglu, H. Jia, D. J. Jones, D. H. Ha, S. K. Kim
PublisherIOP Publishing Ltd.
Pages687-698
Number of pages12
Edition9
ISBN (Electronic)9781607685395
DOIs
Publication statusPublished - 2020
EventPacific Rim Meeting on Electrochemical and Solid State Science 2020, PRiME 200 - Honolulu, United States
Duration: Oct 4 2020Oct 9 2020

Publication series

NameECS Transactions
Number9
Volume98
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Conference

ConferencePacific Rim Meeting on Electrochemical and Solid State Science 2020, PRiME 200
CountryUnited States
CityHonolulu
Period10/4/2010/9/20

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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