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1H NMR study of the...
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Shastri, AnandaMinnesota State University Moorhead
(författare)
1H NMR study of the hydrogen dynamics in the (NaS)xGe(OH)4-x*y H2O ceramic proton conductors
- Artikel/kapitelEngelska2012
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Nummerbeteckningar
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LIBRIS-ID:oai:research.chalmers.se:57d600db-9613-4bc4-a23c-338b7d8084ca
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https://doi.org/10.1016/j.ssi.2012.09.017DOI
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https://research.chalmers.se/publication/164826URI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:art swepub-publicationtype
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Ämneskategori:ref swepub-contenttype
Anmärkningar
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1H NMR was performed on the ceramic proton conductor (NaS)xGe(OH)4-x*y H2O for x=2,3 and y≈1-4 over the temperature range of −100 °C to 400 °C. NMR spectra, nuclear spin-lattice relaxation rates (R1), spin-spin relaxation rates (R2), and rotating frame relaxation rates (R1ρ) were obtained for both hydrated and dehydrated samples. It was found that the low temperature NMR spectra were consistent with simulated H2O lineshapes, and the presence of H3O+ at low temperature was not detected within the experimental uncertainty. Short- and long-range hydrogen motion occurred together, a signature of Grotthuss conduction mechanisms. The long range motion was a combination of H+ and H2O diffusion, with H2O motion limiting H+ dynamics as the onset temperature was approached.
Ämnesord och genrebeteckningar
Biuppslag (personer, institutioner, konferenser, titlar ...)
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Shane, DavidWashington University in St. Louis
(författare)
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Nordström, Jonas,1980Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)k00nojo
(författare)
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Matic, Aleksandar,1968Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)matic
(författare)
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Martin, SteveIowa State University
(författare)
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Minnesota State University MoorheadWashington University in St. Louis
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Solid State Ionics: Elsevier BV228, s. 46-550167-2738
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