11. On the nanoscale structural evolution of solid discharge products in lithium-sulfur batteries using operando scatteringChristian Prehal, Jean-Marc von Mentlen, Sara Drvarič Talian, Alen Vižintin, Robert Dominko, Heinz Amentisch, Lionel Porcar, Stefan A. Freunberger, Vanessa Wood, 2022, original scientific article Published in DiRROS: 14.11.2022; Views: 356; Downloads: 207
 Full text (4,04 MB)
This document has many files! More... |
12. Correlating structural properties with electrochemical behavior of non-graphitizable carbons in Na-ion batteriesBlaž Tratnik, Nigel Willy Van de Velde, Ivan Jerman, Gregor Kapun, Elena Tchernychova, Matija Tomšič, Andrej Jamnik, Boštjan Genorio, Alen Vižintin, Robert Dominko, 2022, original scientific article Published in DiRROS: 02.11.2022; Views: 662; Downloads: 356
Full text (7,28 MB)
This document has many files! More... |
13. Extending the conversion rate of sulfur infiltrated into microporous carbon in carbonate electrolytesMaría L. Para, Cecilia A. Calderón, Sara Drvarič Talian, Florent Fischer, Guillermina L. Luque, Daniel Barraco, Ezequiel Leiva, Robert Dominko, 2022, original scientific article Published in DiRROS: 10.03.2022; Views: 562; Downloads: 412
Full text (2,13 MB)
This document has many files! More... |
14. Effects of a mixed O/F ligand in the Tavorite-type LiVPO[sub]4O structureSorour Semsari Parapari, Jean-Marcel Ateba Mba, Elena Tchernychova, Gregor Mali, Iztok Arčon, Gregor Kapun, Mehmet Ali Gülgün, Robert Dominko, 2020, original scientific article Keywords: XRD, SEM, V XANES, Tavorite-type, electrochemical properties
Published in DiRROS: 25.11.2020; Views: 1614; Downloads: 893
Full text (3,10 MB)
This document has many files! More... |
15. |
16. |
17. |
18. Novel complex stacking of fully-ordered transition metal layers in Li [sub] 4 FeSbO [sub] 6 materialsEric McCalla, Bojan Budič, Robert Dominko, 2015, original scientific article Abstract: As part of a broad project to explore Li4MM′O6 materials (with M and M′ being selected from a wide variety of metals) as positive electrode materials for Li-ion batteries, the structures of Li4FeSbO6 materials with both stoichiometric and slightly deficient lithium contents are studied here. For lithium content varying from 3.8 to 4.0, the color changes from yellow to black and extra superstructure peaks are seen in the XRD patterns. These extra peaks appear as satellites around the four superstructure peaks affected by the stacking of the transition metal atoms. Refinements of both XRD and neutron scattering patterns show a nearly perfect ordering of Li, Fe, and Sb in the transition metal layers of all samples, although these refinements must take the stacking faults into account in order to extract information about the structure of the TM layers. The structure of the most lithium rich sample, where the satellite superstructure peaks are seen, was determined with the help of HRTEM, XRD, and neutron scattering. The satellites arise due to a new stacking sequence where not all transition metal layers are identical but instead two slightly different compositions stack in an AABB sequence giving a unit cell that is four times larger than normal for such monoclinic layered materials. The more lithium deficient samples are found to contain metal site vacancies based on elemental analysis and Mössbauer spectroscopy results. The significant changes in physical properties are attributed to the presence of these vacancies. This study illustrates the great importance of carefully determining the final compositions in these materials, as very small differences in compositions may have large impacts on structures and properties.
Keywords: materiali, elektrokemija, spektrografija
Published in DiRROS: 31.03.2015; Views: 4722; Downloads: 780
 Link to file
This document has many files! More... |
