Enhanced Catalytic Activity of Pt Nanostructured Electrodes Deposited by Spark Ablation for Proton Exchange Membrane Fuel Cells
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F25%3A00617984" target="_blank" >RIV/61388998:_____/25:00617984 - isvavai.cz</a>
Alternative codes found
RIV/68378271:_____/25:00617984
Result on the web
<a href="https://pubs.acs.org/doi/10.1021/acsami.4c22587" target="_blank" >https://pubs.acs.org/doi/10.1021/acsami.4c22587</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acsami.4c22587" target="_blank" >10.1021/acsami.4c22587</a>
Alternative languages
Result language
angličtina
Original language name
Enhanced Catalytic Activity of Pt Nanostructured Electrodes Deposited by Spark Ablation for Proton Exchange Membrane Fuel Cells
Original language description
Catalyst layers play a crucial role in determining the performance of proton exchange membrane fuel cells (PEMFCs). However, the deposition of catalystnlayers poses challenges in PEMFC stack production due to the complexity of the fabrication steps. Herein, we present a simplified approach to synthesize Ptnnanostructures via spark ablation and simultaneously deposit them onto gas diffusion layers (GDL). The in situ deposited catalyst layers on GDL serve as electrodes fornmembrane electrode assembly (MEA) fabrication. Moreover, the carrier gas in the spark ablation process significantly influences the nucleation and growth of the Ptnnanostructures. Pt nanostructures produced in forming gas (Pt_FG, 95% nitrogen, and 5% hydrogen) exhibit dendritic morphology distinct from those obtained in purenN2 (Pt_N2). Investigating the catalytic activity of Pt synthesized in different carrier gases reveals that the Pt_FG catalyst demonstrates enhanced half-wave potential, massnactivity, and durability compared to those of Pt_N2 and commercial Pt-black catalysts. Single-cell measurements evaluate the electrocatalytic activity of the ionomer-free, in situ deposited catalyst layers. The Pt_FG MEA (0.2 mgPt cm−2) achieves a power density of 1285 mW cm−2 at 70 °C, 200 kPa, approximately 1.8 and 2 times higher than Pt_N2 and Pt-black MEAs, respectively. Further reduction of the catalyst loading to 0.1 mgPt cm−2 results in the Pt_FG MEA delivering 961 mW cm−2, indicating enhanced catalytic activity and Pt utilization efficiency. This study provides insights into fabricating catalytic layers using a facile strategy, circumventing the need for catalyst synthesis, ink formation, and electrode coating techniques.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
21001 - Nano-materials (production and properties)
Result continuities
Project
<a href="/en/project/TM03000034" target="_blank" >TM03000034: Development of high performance extend ranger EV boat</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ACS Applied Materials and Interfaces
ISSN
1944-8244
e-ISSN
1944-8252
Volume of the periodical
17
Issue of the periodical within the volume
11
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
17295-17306
UT code for WoS article
001437955400001
EID of the result in the Scopus database
2-s2.0-105001063476