Wet Chemistry Route to Li<sub>3</sub>InCl<sub>6</sub>: Microstructural Control Render High Ionic Conductivity and Enhanced All‐Solid‐State Battery Performance

Bonsu, Jacob Otabil; Bhadra, Abhirup; Kundu, Dipan

Wet Chemistry Route to Li₃InCl₆: Microstructural Control Render High Ionic Conductivity and Enhanced All‐Solid‐State Battery Performance

Mark

Bonsu, Jacob Otabil ; Bhadra, Abhirup ^LU

and Kundu, Dipan (2024) In Advanced Science 11(34).

Abstract: Thanks to superionic conductivity and compatibility with >4 V
cathodes, halide solid electrolytes (SEs) have elicited tremendous
interest for application in all-solid-state lithium batteries (ASSLBs).
Many compositions based on groups 3, 13, and divalent metals, and
substituted stoichiometries have been explored, some displaying
requisite properties, but the Li⁺ conductivity still falls
short of theoretical predictions and appealing sulfide-type SEs. While
controlling microstructural characteristics, namely grain boundary
effects and microstrain, can boost ionic conductivity, they have rarely
been considered. Moving away from the standard solid-state route, here a
scalable and... (More); Thanks to superionic conductivity and compatibility with >4 V
cathodes, halide solid electrolytes (SEs) have elicited tremendous
interest for application in all-solid-state lithium batteries (ASSLBs).
Many compositions based on groups 3, 13, and divalent metals, and
substituted stoichiometries have been explored, some displaying
requisite properties, but the Li⁺ conductivity still falls
short of theoretical predictions and appealing sulfide-type SEs. While
controlling microstructural characteristics, namely grain boundary
effects and microstrain, can boost ionic conductivity, they have rarely
been considered. Moving away from the standard solid-state route, here a
scalable and facile wet chemical approach for obtaining highly
conductive (>2 mS cm⁻¹) Li₃InCl₆ is
presented, and it is shown that aprotic solvents can reduce grain
boundaries and microstrain, leading to very high ionic conductivity of
over 4 mS cm⁻¹ (at 22 °C). Minimized grain boundary area
renders improved moisture stability and enhances solid–solid interfacial
contact, leading to excellent LiNi_0.6Mn_0.2Co_0.2O₂-based full-cell performance, exemplified by stable room temperature (22 °C) cycling at a 0.2 C rate with 155 mAh g⁻¹
capacity and 85% retention after 1000 cycles at 60 °C with a high
99.75% Coulombic efficiency. The findings showcase the viability of the
aprotic solvent-mediated route for producing high-quality Li₃InCl₆ for all-solid-state batteries. (Less)

Please use this url to cite or link to this publication: https://lup.lub.lu.se/record/a448dd49-7d31-486e-b4ca-467b74af74a2

author

Bonsu, Jacob Otabil ; Bhadra, Abhirup ^LU

and Kundu, Dipan

publishing date

2024-09-01

type

Contribution to journal

publication status

published

in

Advanced Science

volume

11

issue

34

article number

2403208

publisher

John Wiley & Sons Inc.

external identifiers

scopus:85197704222

ISSN

2198-3844

DOI

10.1002/advs.202403208

language

English

LU publication?

no

id

a448dd49-7d31-486e-b4ca-467b74af74a2

date added to LUP

2026-03-04 09:48:02

date last changed

2026-03-10 11:16:10

@article{a448dd49-7d31-486e-b4ca-467b74af74a2,
  abstract     = {{Thanks to superionic conductivity and compatibility with &gt;4 V <br>
cathodes, halide solid electrolytes (SEs) have elicited tremendous <br>
interest for application in all-solid-state lithium batteries (ASSLBs). <br>
Many compositions based on groups 3, 13, and divalent metals, and <br>
substituted stoichiometries have been explored, some displaying <br>
requisite properties, but the Li<sup>+</sup> conductivity still falls <br>
short of theoretical predictions and appealing sulfide-type SEs. While <br>
controlling microstructural characteristics, namely grain boundary <br>
effects and microstrain, can boost ionic conductivity, they have rarely <br>
been considered. Moving away from the standard solid-state route, here a<br>
 scalable and facile wet chemical approach for obtaining highly <br>
conductive (&gt;2 mS cm<sup>−1</sup>) Li<sub>3</sub>InCl<sub>6</sub> is <br>
presented, and it is shown that aprotic solvents can reduce grain <br>
boundaries and microstrain, leading to very high ionic conductivity of <br>
over 4 mS cm<sup>−1</sup> (at 22 °C). Minimized grain boundary area <br>
renders improved moisture stability and enhances solid–solid interfacial<br>
 contact, leading to excellent LiNi<sub>0.6</sub>Mn<sub>0.2</sub>Co<sub>0.2</sub>O<sub>2</sub>-based full-cell performance, exemplified by stable room temperature (22 °C) cycling at a 0.2 C rate with 155 mAh g<sup>−1</sup><br>
 capacity and 85% retention after 1000 cycles at 60 °C with a high <br>
99.75% Coulombic efficiency. The findings showcase the viability of the <br>
aprotic solvent-mediated route for producing high-quality Li<sub>3</sub>InCl<sub>6</sub> for all-solid-state batteries.}},
  author       = {{Bonsu, Jacob Otabil and Bhadra, Abhirup and Kundu, Dipan}},
  issn         = {{2198-3844}},
  language     = {{eng}},
  month        = {{09}},
  number       = {{34}},
  publisher    = {{John Wiley & Sons Inc.}},
  series       = {{Advanced Science}},
  title        = {{Wet Chemistry Route to Li<sub>3</sub>InCl<sub>6</sub>: Microstructural Control Render High Ionic Conductivity and Enhanced All‐Solid‐State Battery Performance}},
  url          = {{http://dx.doi.org/10.1002/advs.202403208}},
  doi          = {{10.1002/advs.202403208}},
  volume       = {{11}},
  year         = {{2024}},
}

Lund University Publications

LUND UNIVERSITY LIBRARIES

Wet Chemistry Route to Li₃InCl₆: Microstructural Control Render High Ionic Conductivity and Enhanced All‐Solid‐State Battery Performance