Halogen-substituted Li3InCl6: Insights into the Evolved Structure, Composition, and Ionic Conductivity

28 March 2025, Version 1
This content is a preprint and has not undergone peer review at the time of posting.

Abstract

Ternary Li-containing halides have gained significant interest for all-solid-state batteries because they show high Li-ion conductivity, and their structures can be modified. In this study, halogen substitution in Li3InCl6 was attempted to form Li3InCl6–xXx (X = F, Br, I) samples whose phase compositions and Li+ conductivity were characterized by X-ray diffraction and impedance spectroscopy. Based on the evolution of cell parameters, Cl can be substituted completely by F within the experimental limit of x ≤ 1.2, while by other halogens up to a solid solubility limit of x = 0.6 for Br, and x < 0.1 for I. The Li-ion conductivity diminished with greater nominal compositions of X in the samples, especially as other phases exhibiting low conductivity are formed. These results suggest that increased polarizability of X is not a dominant factor influencing Li+ mobility in Li3InCl6–xXx.

Keywords

Ternary Li-containing halides
Halogen substitution
Ionic Conductivity
Solid solubility limit

Comments

Comments are not moderated before they are posted, but they can be removed by the site moderators if they are found to be in contravention of our Commenting Policy [opens in a new tab] - please read this policy before you post. Comments should be used for scholarly discussion of the content in question. You can find more information about how to use the commenting feature here [opens in a new tab] .
This site is protected by reCAPTCHA and the Google Privacy Policy [opens in a new tab] and Terms of Service [opens in a new tab] apply.