Phase evolution during lithium–indium halide superionic conductor dehydration
| Autor: | Andrew Robert Drews, Tyler H. Bennett, Melanie J. Kirkham, Robert L. Sacci, Jagjit Nanda, Venkataramani Anandan, Luke L. Daemen |
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| Rok vydání: | 2021 |
| Předmět: |
Phase transition
Materials science Renewable Energy Sustainability and the Environment Analytical chemistry chemistry.chemical_element 02 engineering and technology General Chemistry Conductivity Neutron scattering 010402 general chemistry 021001 nanoscience & nanotechnology Alkali metal 01 natural sciences 0104 chemical sciences Crystal chemistry Phase (matter) Fast ion conductor General Materials Science Lithium 0210 nano-technology |
| Zdroj: | Journal of Materials Chemistry A. 9:990-996 |
| ISSN: | 2050-7496 2050-7488 |
| DOI: | 10.1039/d0ta10012a |
| Popis: | Select rare-earth alkali halides have demonstrated high lithium ion conductivity. The conductivity appears to be related to the stability of the crystal phase, ordering of the lithium sublattice and the amount of residual H2O. Li3InCl6 can be synthesized from concentrated aqueous solution through controlled dehydration. Here, we track Li3InCl6 dehydration using a multimodal approach that combines thermogravimetric, spectroscopic, X-ray diffraction, and neutron scattering techniques. In situ X-ray diffraction suggests a single phase transition caused by dehydration, in disagreement with spectroscopic and thermodynamic measurements. Neutron scattering, being sensitive toward the H2O and Li sublattices, reveals multiple phase transitions. We show that the loss of the final trace H2O leads to strain and grain boundary formation. Thus, controlled dehydration may be a viable strategy for high-throughput processing for roll-to-roll manufacturing of REAH solid electrolytes. |
| Databáze: | OpenAIRE |
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