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Platinum Cryoaerogel as a Low Loading Cathode Catalyst in PEM Water Electrolysis: An Initial Concept Evaluation

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Original languageEnglish
Pages (from-to)194-207
Number of pages14
JournalACS Applied Energy Materials
Volume8
Issue number1
Early online date2 Jan 2025
Publication statusPublished - 13 Jan 2025

Abstract

Proton exchange membrane water electrolysis (PEMWE) gained significant focus among the scientific community as a promising solution for green hydrogen production. Noble metals, platinum (Pt) and iridium in particular, play a significant role in the case of large-scale implementation due to limited availability. Recently, aerogel materials have been integrated into the PEMWE cell designs to enhance durability and reduce the high catalyst noble metal loadings. In this work, we present for the first time a Pt nanoparticle-based (NP-based) cryoaerogel as an active catalyst layer directly applied on the carbon support gas diffusion layer (GDL) at the cathode side. Some challenges were successfully overcome during the manufacturing process (i.e., wettability and mechanical connection issues). A pyrolysis step is employed to improve the connection between the Pt cryoaerogel and the carbon GDL. The structure of the synthesized Pt cryoaerogel is found to be greatly influenced by the pyrolysis temperature as confirmed by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). The electrochemical characterization of the Pt cryoaerogel involves polarization curves, impedance measurements, and voltage loss breakdown as well as a 500 h durability test. The results show that the cryoaerogel catalyst layer has stable and reproducible performance with a high mass activity reached at a low Pt loading of 0.15

Keywords

    cathode catalyst, cryoaerogel, PEM, platinum, water electrolysis

ASJC Scopus subject areas

Sustainable Development Goals

Cite this

Platinum Cryoaerogel as a Low Loading Cathode Catalyst in PEM Water Electrolysis: An Initial Concept Evaluation. / Stein, Lukas; Borg, Hadir; Wesemann, Christoph et al.
In: ACS Applied Energy Materials, Vol. 8, No. 1, 13.01.2025, p. 194-207.

Research output: Contribution to journalArticleResearchpeer review

Stein, L, Borg, H, Wesemann, C, Zhao, Z, Moß, C, Trinke, P, Ismael, M, Bensmann, B, Bigall, NC, Dorfs, D & Hanke-Rauschenbach, R 2025, 'Platinum Cryoaerogel as a Low Loading Cathode Catalyst in PEM Water Electrolysis: An Initial Concept Evaluation', ACS Applied Energy Materials, vol. 8, no. 1, pp. 194-207. https://doi.org/10.1021/acsaem.4c02255
Stein, L., Borg, H., Wesemann, C., Zhao, Z., Moß, C., Trinke, P., Ismael, M., Bensmann, B., Bigall, N. C., Dorfs, D., & Hanke-Rauschenbach, R. (2025). Platinum Cryoaerogel as a Low Loading Cathode Catalyst in PEM Water Electrolysis: An Initial Concept Evaluation. ACS Applied Energy Materials, 8(1), 194-207. https://doi.org/10.1021/acsaem.4c02255
Stein L, Borg H, Wesemann C, Zhao Z, Moß C, Trinke P et al. Platinum Cryoaerogel as a Low Loading Cathode Catalyst in PEM Water Electrolysis: An Initial Concept Evaluation. ACS Applied Energy Materials. 2025 Jan 13;8(1):194-207. Epub 2025 Jan 2. doi: 10.1021/acsaem.4c02255
Stein, Lukas ; Borg, Hadir ; Wesemann, Christoph et al. / Platinum Cryoaerogel as a Low Loading Cathode Catalyst in PEM Water Electrolysis : An Initial Concept Evaluation. In: ACS Applied Energy Materials. 2025 ; Vol. 8, No. 1. pp. 194-207.
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AU - Stein, Lukas

AU - Borg, Hadir

AU - Wesemann, Christoph

AU - Zhao, Zhijun

AU - Moß, Christopher

AU - Trinke, Patrick

AU - Ismael, Mohammed

AU - Bensmann, Boris

AU - Bigall, Nadja C.

AU - Dorfs, Dirk

AU - Hanke-Rauschenbach, Richard

N1 - Publisher Copyright: © 2025 The Authors. Published by American Chemical Society.

PY - 2025/1/13

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