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Direct visualization of hydrogen absorption dynamics in individual palladium nanoparticles

Author

Listed:
  • Tarun C. Narayan

    (Stanford University)

  • Fariah Hayee

    (Stanford University)

  • Andrea Baldi

    (Stanford University
    DIFFER—Dutch Institute for Fundamental Energy Research)

  • Ai Leen Koh

    (Stanford Nano Shared Facilities, Stanford University)

  • Robert Sinclair

    (Stanford University)

  • Jennifer A. Dionne

    (Stanford University
    Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory)

Abstract

Many energy storage materials undergo large volume changes during charging and discharging. The resulting stresses often lead to defect formation in the bulk, but less so in nanosized systems. Here, we capture in real time the mechanism of one such transformation—the hydrogenation of single-crystalline palladium nanocubes from 15 to 80 nm—to better understand the reason for this durability. First, using environmental scanning transmission electron microscopy, we monitor the hydrogen absorption process in real time with 3 nm resolution. Then, using dark-field imaging, we structurally examine the reaction intermediates with 1 nm resolution. The reaction proceeds through nucleation and growth of the new phase in corners of the nanocubes. As the hydrogenated phase propagates across the particles, portions of the lattice misorient by 1.5%, diminishing crystal quality. Once transformed, all the particles explored return to a pristine state. The nanoparticles’ ability to remove crystallographic imperfections renders them more durable than their bulk counterparts.

Suggested Citation

  • Tarun C. Narayan & Fariah Hayee & Andrea Baldi & Ai Leen Koh & Robert Sinclair & Jennifer A. Dionne, 2017. "Direct visualization of hydrogen absorption dynamics in individual palladium nanoparticles," Nature Communications, Nature, vol. 8(1), pages 1-8, April.
  • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms14020
    DOI: 10.1038/ncomms14020
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    Cited by:

    1. Luca Pasquini, 2020. "Design of Nanomaterials for Hydrogen Storage," Energies, MDPI, vol. 13(13), pages 1-28, July.
    2. Ahmed M. Abdellah & Fatma Ismail & Oliver W. Siig & Jie Yang & Carmen M. Andrei & Liza-Anastasia DiCecco & Amirhossein Rakhsha & Kholoud E. Salem & Kathryn Grandfield & Nabil Bassim & Robert Black & G, 2024. "Impact of palladium/palladium hydride conversion on electrochemical CO2 reduction via in-situ transmission electron microscopy and diffraction," Nature Communications, Nature, vol. 15(1), pages 1-15, December.

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