Development and evaluation of ir based anode electrocatalysts for water electrolysis

Marika Muto, Mayumi Nagayama, Kazunari Sasaki, Akari Hayashi

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

2 Citations (Scopus)

Abstract

Development of a durability protocol against the potential fluctuation derived by renewable energy is targeted in this paper. We have studied the effect of various potential fluctuations, by simulating practical operating conditions derived from the use of solar and wind powers. The durability of IrOi and the corresponding degradation mechanism were studied in order to suggest an appropriate durability protocol. We have found that relatively slow fluctuation without cycling back to the low potential like 0 V leads to serious degradation of IrOi catalyst. We have also investigated degradation mechanism of I1O2 and have found that IrOi is further oxidized to Ir02(OH) above 1.8 V, and then Ir02(OH) is converted into soluble Ir(OH)3 or InO} species, leading to loss of Ir02 electrocatalyst.

Original languageEnglish
Title of host publicationECS Transactions
EditorsC. Coutanceau, S. Narayan, Y.-T. Kim, Y. Gochi-Ponce, B.S. Pivovar, T.F. Fuller, R.A. Mantz, P. Shirvanian, D.J. Jones, F. Buechi, V.K. Ramani, J.M. Fenton, K.E. Swider-Lyons, T.J. Schmidt, K.E. Ayers, A.Z. Weber, P.N. Pintauro, P. Strasser, H. Xu, S. Mitsushima, H. Gasteiger, H. Uchida
PublisherElectrochemical Society Inc.
Pages719-726
Number of pages8
Edition13
ISBN (Electronic)9781607685395
DOIs
Publication statusPublished - Jan 1 2018
EventSymposium on Polymer Electrolyte Fuel Cells and Electrolyzers 18, PEFC and E 2018 - AiMES 2018, ECS and SMEQ Joint International Meeting - Cancun, Mexico
Duration: Sep 30 2018Oct 4 2018

Publication series

NameECS Transactions
Number13
Volume86
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Other

OtherSymposium on Polymer Electrolyte Fuel Cells and Electrolyzers 18, PEFC and E 2018 - AiMES 2018, ECS and SMEQ Joint International Meeting
CountryMexico
CityCancun
Period9/30/1810/4/18

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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    Muto, M., Nagayama, M., Sasaki, K., & Hayashi, A. (2018). Development and evaluation of ir based anode electrocatalysts for water electrolysis. In C. Coutanceau, S. Narayan, Y-T. Kim, Y. Gochi-Ponce, B. S. Pivovar, T. F. Fuller, R. A. Mantz, P. Shirvanian, D. J. Jones, F. Buechi, V. K. Ramani, J. M. Fenton, K. E. Swider-Lyons, T. J. Schmidt, K. E. Ayers, A. Z. Weber, P. N. Pintauro, P. Strasser, H. Xu, S. Mitsushima, H. Gasteiger, ... H. Uchida (Eds.), ECS Transactions (13 ed., pp. 719-726). (ECS Transactions; Vol. 86, No. 13). Electrochemical Society Inc.. https://doi.org/10.1149/08613.0719ecst