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Grain-growth mediated hydrogen sorption kinetics and compensation effect in single Pd nanoparticles

Author

Listed:
  • Svetlana Alekseeva

    (Chalmers University of Technology)

  • Michal Strach

    (Chalmers University of Technology)

  • Sara Nilsson

    (Chalmers University of Technology)

  • Joachim Fritzsche

    (Chalmers University of Technology)

  • Vladimir P. Zhdanov

    (Chalmers University of Technology
    Boreskov Institute of Catalysis, Russian Academy of Sciences)

  • Christoph Langhammer

    (Chalmers University of Technology)

Abstract

Grains constitute the building blocks of polycrystalline materials and their boundaries determine bulk physical properties like electrical conductivity, diffusivity and ductility. However, the structure and evolution of grains in nanostructured materials and the role of grain boundaries in reaction or phase transformation kinetics are poorly understood, despite likely importance in catalysis, batteries and hydrogen energy technology applications. Here we report an investigation of the kinetics of (de)hydriding phase transformations in individual Pd nanoparticles. We find dramatic evolution of single particle grain morphology upon cyclic exposure to hydrogen, which we identify as the reason for the observed rapidly slowing sorption kinetics, and as the origin of the observed kinetic compensation effect. These results shed light on the impact of grain growth on kinetic processes occurring inside nanoparticles, and provide mechanistic insight in the observed kinetic compensation effect.

Suggested Citation

  • Svetlana Alekseeva & Michal Strach & Sara Nilsson & Joachim Fritzsche & Vladimir P. Zhdanov & Christoph Langhammer, 2021. "Grain-growth mediated hydrogen sorption kinetics and compensation effect in single Pd nanoparticles," Nature Communications, Nature, vol. 12(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-25660-x
    DOI: 10.1038/s41467-021-25660-x
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    Cited by:

    1. Ferry Anggoro Ardy Nugroho & Ping Bai & Iwan Darmadi & Gabriel W. Castellanos & Joachim Fritzsche & Christoph Langhammer & Jaime Gómez Rivas & Andrea Baldi, 2022. "Inverse designed plasmonic metasurface with parts per billion optical hydrogen detection," Nature Communications, Nature, vol. 13(1), pages 1-10, December.

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