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Cited by 478

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Is iridium demand a potential bottleneck in the realization of large-scale PEM water electrolysis?

Open access
Minke, Christine, Suermann, Michel, Bensmann, Boris, Hanke-Rauschenbach, Richard·2021·International Journal of Hydrogen Energy

Abstract

Proton exchange membrane water electrolysis (PEMWE) is a key technology for future sustainable energy systems. Proton exchange membrane (PEM) electrolysis cells use iridium, one of the scarcest elements on earth, as catalyst for the oxygen evolution reaction. In the present study, the expected iridium demand and potential bottlenecks in the realization of PEMWE for hydrogen production in the targeted GW a−1 scale are assessed in a model built on three pillars: (i) an in-depth analysis of iridium reserves and mine production, (ii) technical prospects for the optimization of PEM water electrolyzers, and (iii) PEMWE installation rates for a market ramp-up and maturation model covering 50 years. As a main result, two necessary preconditions have been identified to meet the immense future iridium demand: first, the dramatic reduction of iridium catalyst loading in PEM electrolysis cells and second, the development of a recycling infrastructure for iridium catalysts with technical end-of-life recycling rates of at least 90%.

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Metadata

Authors
Minke, C., Suermann, M., Bensmann, B., & Hanke-Rauschenbach, R.
Venue
International Journal of Hydrogen Energy
Publisher
Elsevier BV
Published
2021-07
Volume
46
Issue
46
Pages
23581-23590
ISSN
0360-3199 (ISSN-L)
OpenAlex
W3164354139
Cited by
478
References
16
FWCI
15.88
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: Is iridium demand a potential bottleneck in the realization of large-scale PEM water electrolysis? https://app.cochat.ai/papers/10.1016/j.ijhydene.2021.04.174
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Minke, C., Suermann, M., Bensmann, B., & Hanke-Rauschenbach, R. (2021). Is iridium demand a potential bottleneck in the realization of large-scale PEM water electrolysis? International Journal of Hydrogen Energy. https://doi.org/10.1016/j.ijhydene.2021.04.174

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