Investigating Anion Ordering in Sulfide Argyrodite Solid Electrolytes
Solid-state batteries (Li-SSBs) can address the poor range, slow charging, and safety issues associated with current Li-ion batteries by utilizing lithium metal anodes. However, commercial Li-SSBs are plagued by the poor conductivities of current solid Li-ion electrolytes. We have utilised a novel spark plasma sintering (SPS) process to produce a commercially viable Li6PS5Cl solid electrolyte with significant improvement in ionic conductivity (increasing from 1 to 14 mS/cm). Using NMR relaxometry, we have evidence that the SPS process induces local structural change which contributes to the improved Li-ion conduction. We believe the local change is increased anion ordering, with some evidence of this coming from NMR spectroscopy and X-ray PDF measurements. However, due to the similar electron configuration of S2- and Cl- exact site occupancies cannot be obtained using X-rays or neutrons at D20. Therefore, we require high-res neutron PDF to calculate these occupancies and accurately determine the site disorder. We request a total of 2 hours of nPDF access, for the normal Li6PS5Cl material. These are the final experiments required before publication.
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The recommended format for citing this dataset in a research publication is in the following format:
PAYNE Bartholomew and SUARD Emmanuelle. (2023). Investigating Anion Ordering in Sulfide Argyrodite Solid Electrolytes. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.EASY-1133
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