TY - JOUR
T1 - Enhancing Hydrogen Storage Capacity of Pd Nanoparticles by Sandwiching between Inorganic Nanosheets
AU - Ament, Kevin
AU - Kobayashi, Hirokazu
AU - Kusada, Kohei
AU - Breu, Josef
AU - Kitagawa, Hiroshi
N1 - Funding Information:
This work was supported by the Deutsche Forschungsgemeinschaft (SFB 840, TP A2). K.A. thanks the Elite Network of Bavaria for a PhD fellowship. We thank Marco Schwarzmann for preparing samples for cross-sectional TEM and SEM-EDS measurements. We appreciate the support of the Keylab for Optical and Electron Microscopy of the Bavarian Polymer Institute (BPI). The XPS/UPS facility (PHI 5000 VersaProbe III system) at the Device Engineering Keylab of BPI is acknowledged. Open Access funding enabled and organized by Projekt DEAL.
Funding Information:
This work was supported by the Deutsche Forschungsgemeinschaft (SFB 840, TP A2). K.A. thanks the Elite Network of Bavaria for a PhD fellowship. We thank Marco Schwarzmann for preparing samples for cross‐sectional TEM and SEM‐EDS measurements. We appreciate the support of the Keylab for Optical and Electron Microscopy of the Bavarian Polymer Institute (BPI). The XPS/UPS facility (PHI 5000 VersaProbe III system) at the Device Engineering Keylab of BPI is acknowledged. Open Access funding enabled and organized by Projekt DEAL.
Publisher Copyright:
© 2022 The Authors. Zeitschrift für anorganische und allgemeine Chemie published by Wiley-VCH GmbH.
PY - 2022/5/25
Y1 - 2022/5/25
N2 - 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.
AB - 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.
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U2 - 10.1002/zaac.202100370
DO - 10.1002/zaac.202100370
M3 - Article
AN - SCOPUS:85124909226
VL - 648
JO - Zeitschrift fur Anorganische und Allgemeine Chemie
JF - Zeitschrift fur Anorganische und Allgemeine Chemie
SN - 0044-2313
IS - 10
M1 - e202100370
ER -