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

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

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抄録

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.

本文言語英語
ホスト出版物のタイトルPRiME 2020
ホスト出版物のサブタイトルPolymer Electrolyte Fuel Cells and Electrolyzers 20 (PEFC and E 20)
編集者K. 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
出版社IOP Publishing Ltd.
ページ687-698
ページ数12
9
ISBN(電子版)9781607685395
DOI
出版ステータス出版済み - 2020
イベントPacific Rim Meeting on Electrochemical and Solid State Science 2020, PRiME 200 - Honolulu, 米国
継続期間: 10 4 202010 9 2020

出版物シリーズ

名前ECS Transactions
番号9
98
ISSN(印刷版)1938-6737
ISSN(電子版)1938-5862

会議

会議Pacific Rim Meeting on Electrochemical and Solid State Science 2020, PRiME 200
Country米国
CityHonolulu
Period10/4/2010/9/20

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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