Grain-Growth Mediated Hydrogen Sorption Kinetics and Compensation Effect in Single Pd Nanoparticles Full article
| Journal |
Nature Communications
ISSN: 2041-1723 |
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| Output data | Year: 2021, Volume: 12, Number: 1, Article number : 5427, Pages count : 10 DOI: 10.1038/s41467-021-25660-x | ||||
| Tags | nanocrystalline Pd; entropy; thermodynamics; spectroscopy; hysteresis; absorption; diffusion; oxidation; dynamics; defects | ||||
| Authors |
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| Affiliations |
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Funding (4)
| 1 | European Commission | 678941 ERC-StG-2015 SINCAT |
| 2 | Knut and Alice Wallenberg Foundation | 2015.0055 |
| 3 | Knut and Alice Wallenberg Foundation | 2016.0210 |
| 4 | Ministry of Science and Higher Education of the Russian Federation | 0239-2021-0011 |
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.
Cite:
Alekseeva S.
, Strach M.
, Nilsson S.
, Fritzsche J.
, Zhdanov V.P.
, Langhammer C.
Grain-Growth Mediated Hydrogen Sorption Kinetics and Compensation Effect in Single Pd Nanoparticles
Nature Communications. 2021. V.12. N1. 5427 :1-10. DOI: 10.1038/s41467-021-25660-x WOS Scopus РИНЦ ANCAN PMID OpenAlex OpenAlex
Grain-Growth Mediated Hydrogen Sorption Kinetics and Compensation Effect in Single Pd Nanoparticles
Nature Communications. 2021. V.12. N1. 5427 :1-10. DOI: 10.1038/s41467-021-25660-x WOS Scopus РИНЦ ANCAN PMID OpenAlex OpenAlex
Dates:
| Submitted: | Feb 5, 2021 |
| Accepted: | Aug 19, 2021 |
| Published print: | Sep 14, 2021 |
| Published online: | Sep 14, 2021 |
Identifiers:
| Web of science: | WOS:000696024700011 |
| Scopus: | 2-s2.0-85115277280 |
| Elibrary: | 47060479 |
| Chemical Abstracts: | 2021:2045282 |
| Chemical Abstracts (print): | 176:482823 |
| PMID: | 34521841 |
| OpenAlex: | W3138461606 | W4229608484 |