Enhancing Hydrogen Storage Capacity of Pd Nanoparticles by Sandwiching between Inorganic Nanosheets

Kevin Ament, Hirokazu Kobayashi, Kohei Kusada, Josef Breu, Hiroshi Kitagawa

Research output: Contribution to journalArticlepeer-review


H2 is regarded to play a crucial role in the transition from a fossil fuel-based energy economy towards an environmentally friendly one. However, storage of H2 is still challenging, but palladium (Pd) based materials show exciting properties. Therefore, nanoparticulate Pd has been intensely studied for hydrogen storage in the past years. Here, we stabilize Pd nanoparticles by intercalation between inorganic nanosheets of hectorite (NaHec). Compared to nanoparticles stabilized by the polymer polyvinylpyrrolidone (PVP), the H2 storage capacity was found to be 86 % higher for identical Pd nanoparticles being intercalated between nanosheets. We attribute this remarkably enhanced H2 storage capacity to the partial oxidation of Pd, as evidenced by X-ray photoelectron spectroscopy (XPS). The higher amount of holes in the 4d band leads to a higher amount of H2 that can be absorbed when Pd is stabilized between the nanosheets of hectorite compared to the PVP stabilized nanoparticles.

Original languageEnglish
Article numbere202100370
JournalZeitschrift fur Anorganische und Allgemeine Chemie
Issue number10
Publication statusPublished - May 25 2022
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Inorganic Chemistry


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