Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 31, Issue 7, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.202006771
Keywords
direct transfer; electrospinning; high temperature PEM fuel cell; oxygen reduction reaction; platinum‐ cobalt
Categories
Funding
- Danish Research Council [8022-00237B]
- National Natural Science Foundation of China [51702221]
- EU framework program for research and innovation H2020 under the Marie Sklodowska-Curie Actions Individual Fellowship [H2020-MSCA-IF-2017] [796272]
- National Natural Science Foundation of China-Research Fund for International Young Scientists [21850410453]
- China Postdoctoral Science Foundation [2018M643193]
- Basic Science Research Program through the National Research Foundation of Korea - Ministry of Education [2019R1A6A3A03033012]
- National Science Foundation of China [51872204, 52072261]
- National Research Foundation of Korea [2019R1A6A3A03033012] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- Marie Curie Actions (MSCA) [796272] Funding Source: Marie Curie Actions (MSCA)
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The expedited conversion of O-2 to H2O with minimal amounts of Pt is crucial for the wide applicability of PEM fuel cells. Developing a process for catalyst management is essential to avoid unnecessary catalyst loss while enhancing Pt utilization, catalytic activity, and durability. The fabrication of self-standing nanofiber electrodes using electrospinning simplifies the operation of cell devices and reduces Pt loss, showing excellent performance due to the synergistic interaction between Pt-Co and Co-N-x nanoparticles.
Expedited conversion of O-2 to H2O with minimal amounts of Pt is essential for wide applicability of PEM fuel cells (PEMFCs). Therefore, it is imperative to develop a process for catalyst management to circumvent unnecessary catalyst loss while improving the Pt utilization, catalytic activity, and durability. Here, the fabrication of a self-standing nanofiber electrode is demonstrated by employing electrospinning. This film-type catalyst simultaneously contains Pt-Co alloy nanoparticles and Co embedded in an N-doped graphitized carbon (Co-N-x) support derived from the electrospun zeolitic imidazolate frameworks. Notably, the flexible electrode is directly transferrable for the membrane-electrode assembly of high temperature PEMFC. In addition, the electrodes exhibit excellent performance, maybe owing to the synergistic interaction between the Pt-Co and Co-N-x as revealed by the computational modeling study. This method simplifies the fabrication and operation of cell device with negligible Pt loss, compared to ink-based conventional catalyst coating methods.
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