Direct Integration of Strained-Pt Catalysts into Proton-Exchange-Membrane Fuel Cells with Atomic Layer Deposition
Date
2021-07-28
Journal Title
Journal ISSN
Volume Title
Publisher
Advanced Materials
Abstract
The design and fabrication of lattice-strained platinum catalysts achieved by removing a soluble core from a platinum shell synthesized via atomic layer deposition, is reported. The remarkable catalytic performance for the oxygen reduction reaction (ORR), measured in both half-cell and full-cell configurations, is attributed to the observed lattice strain. By further optimizing the nanoparticle geometry and ionomer/carbon interactions, mass activity close to 0.8 A mgPt−1 @0.9 V iR-free is achievable in the membrane electrode assembly. Nevertheless, active catalysts with high ORR activity do not necessarily lead to high performance in the high-current-density (HCD) region. More attention shall be directed toward HCD performance for enabling high-power-density hydrogen fuel cells.
Description
This article was originally published in Advanced Materials. The version of record is available at: https://doi.org/10.1002/adma.202007885. © 2021 The Authors. Advanced Materials published by Wiley-VCH GmbH
Keywords
fuel cells, lattice strain, membrane electrode assembly, oxygen reduction reaction, rotating disk electrodes, affordable and clean energy
Citation
Xu, S., Wang, Z., Dull, S., Liu, Y., Lee, D. U., Pacheco, J. S. L., Orazov, M., Vullum, P. E., Dadlani, A. L., Vinogradova, O., Schindler, P., Tam, Q., Schladt, T. D., Mueller, J. E., Kirsch, S., Huebner, G., Higgins, D., Torgersen, J., Viswanathan, V., Jaramillo, T. F., Prinz, F. B., Direct Integration of Strained-Pt Catalysts into Proton-Exchange-Membrane Fuel Cells with Atomic Layer Deposition. Adv. Mater. 2021, 33, 2007885. https://doi.org/10.1002/adma.202007885