Details
Original language | English |
---|---|
Pages (from-to) | 194-207 |
Number of pages | 14 |
Journal | ACS Applied Energy Materials |
Volume | 8 |
Issue number | 1 |
Early online date | 2 Jan 2025 |
Publication status | Published - 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
- Chemical Engineering(all)
- Chemical Engineering (miscellaneous)
- Energy(all)
- Energy Engineering and Power Technology
- Chemistry(all)
- Electrochemistry
- Materials Science(all)
- Materials Chemistry
- Engineering(all)
- Electrical and Electronic Engineering
Sustainable Development Goals
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In: ACS Applied Energy Materials, Vol. 8, No. 1, 13.01.2025, p. 194-207.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Platinum Cryoaerogel as a Low Loading Cathode Catalyst in PEM Water Electrolysis
T2 - An Initial Concept Evaluation
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
Y1 - 2025/1/13
N2 - 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
AB - 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
KW - cathode catalyst
KW - cryoaerogel
KW - PEM
KW - platinum
KW - water electrolysis
UR - http://www.scopus.com/inward/record.url?scp=85215012948&partnerID=8YFLogxK
U2 - 10.1021/acsaem.4c02255
DO - 10.1021/acsaem.4c02255
M3 - Article
AN - SCOPUS:85215012948
VL - 8
SP - 194
EP - 207
JO - ACS Applied Energy Materials
JF - ACS Applied Energy Materials
IS - 1
ER -