Synchrotron Radiation: Instrumentation in Condensed Matter

Itié, Jean‐Paul; Baudelet, F.; Briois, Valérie; Elkaïm, E.; Nadji, A.; Thiaudière, Dominique

doi:10.1002/9781118562888.ch1

Cited by 2 publications

(2 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…30 For the Rietveld analysis, 31 high-resolution PXRD data were collected on the beamline CRISTAL at the Synchrotron Soleil (France). 32,33 A monochromatic beam with a wavelength of 0.7294 Å was selected from the undulator beam using a double crystal Si(111) monochromator. Calibration of the wavelength was performed by measuring the diffraction pattern of the Standard Reference Material LaB 6 (SRM660a).…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

Multidimensional Disorder in Zeolite IM-18 Revealed by Combining Transmission Electron Microscopy and X-ray Powder Diffraction Analyses

Cichocka

Lorgouilloux

Smeets

et al. 2018

Crystal Growth & Design

View full text Add to dashboard Cite

A new medium-pore germanosilicate, denoted IM-18, with a three-dimensional 8 × 8 × 10-ring channel system, has been prepared hydrothermally using 4-dimethylaminopyridine as an organic structure-directing agent (OSDA). Due to the presence of stacking disorder, the structure elucidation of IM-18 was challenging, and a combination of different techniques, including electron diffraction, high-resolution transmission electron microscopy (HRTEM), and Rietveld refinement using synchrotron powder diffraction data, was necessary to elucidate the details of the structure and to understand the nature of the disorder. Rotation electron diffraction data were used to determine the average structure of IM-18, HRTEM images to characterize the stacking disorder, and Rietveld refinement to locate the Ge in the framework and the OSDA occluded in the channels.

show abstract

Section: ■ Experimental Sectionmentioning

confidence: 99%

Multidimensional Disorder in Zeolite IM-18 Revealed by Combining Transmission Electron Microscopy and X-ray Powder Diffraction Analyses

Cichocka

Lorgouilloux

Smeets

et al. 2018

Crystal Growth & Design

View full text Add to dashboard Cite

show abstract

“…For Faradaic reactions, this would need to be accompanied by an equivalent electrochemical reduction of the elements present in the electrode to ensure charge neutrality. These changes in the oxidation state were determined to make conclusive statements as to whether Na + insertion into the Na 6 [108][109][110][111][112][113][114][115]…”

Section: X-ray Photoelectron Spectroscopymentioning

confidence: 99%

Vanadium-based materials as electrode materials in sodium-ion batteries

Hartung¹

View full text Add to dashboard Cite

Natrium-Ionen-Batterien haben Vorteile gegenüber Lithium-Ionen-Batterien hinsichtlich Kosten und Kinetik. Jedoch sind die Identifikation neuer Elektrodenmaterialien sowie ein besseres Verständnis der Ladungsspeicherung notwendig, um die Zyklenstabilität zu verbessern. Diese Arbeit beschreibt die Untersuchung Vanadium-basierter Elektrodenmaterialien. Der beobachtete Kapazitätsverlust von Alkali-Vanadaten während des Zyklisierens wird erklärt und erfolgreich umgesetzte Strategien zur Verbesserung der Zyklenstabilität werden beschrieben. Sodium-ion batteries have advantages over the widespread lithium-ion batteries with regard to cost and kinetics. However, low cycling stability is still a common problem for many electrode materials. Thus, identification of suitable materials and understanding of the respective charge-storage mechanisms are necessary. This work presents investigations on vanadium-based electrode materials in sodium-ion batteries. Reasons for the observed decrease in capacity during cycling are identified and successful strategies to improve cycling stability are presented. This doctoral thesis comprises the scientific publications resulting from my work as a research associate at TUM CREATE. After an introduction to sodium-ion batteries, the main experimental methods employed in this work are described. Subsequently, my four scientific publications, as well as one further publication in which my contribution was crucial, are presented. The thesis is concluded with a discussion of the described results.

show abstract

Synchrotron Radiation: Instrumentation in Condensed Matter

Cited by 2 publications

References 16 publications

Multidimensional Disorder in Zeolite IM-18 Revealed by Combining Transmission Electron Microscopy and X-ray Powder Diffraction Analyses

Multidimensional Disorder in Zeolite IM-18 Revealed by Combining Transmission Electron Microscopy and X-ray Powder Diffraction Analyses

Vanadium-based materials as electrode materials in sodium-ion batteries

Contact Info

Product

Resources

About