Related Experiment Video
Updated: Jul 28, 2025
11:25
In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries
Published on: November 10, 2014
15.8K
Unique Li deposition behavior in Li3PS4 solid electrolyte observed via operando X-ray computed tomography
Jaehee Park1, Toshiki Watanabe1, Kentaro Yamamoto1,2
1Graduate School of Human and Environmental Studies, Kyoto University, Kyoto, Kyoto 606-8501, Japan.
Chemical Communications (Cambridge, England)
|June 2, 2023
Summary
Lithium dendrites are a key challenge for solid-state batteries. This study observed lithium deposition within Li3PS4 electrolytes, identifying electronic conduction and interfaces as causes.
Area of Science:
- Materials Science
- Electrochemistry
- Battery Technology
Background:
- Lithium metal batteries are promising for high energy density storage.
- Lithium dendrite formation remains a critical obstacle to their practical application.
- Solid-state electrolytes offer potential safety and performance benefits.
Purpose of the Study:
- To investigate the morphological changes and lithium deposition mechanisms within Li3PS4 solid electrolytes.
- To understand the root causes of dendrite formation in lithium metal all-solid-state batteries.
Main Methods:
- Utilized operando X-ray computed tomography to observe 3D morphological evolution.
- Analyzed the Li3PS4 electrolyte and the anode-electrolyte interface during battery operation.
Main Results:
- Observed significant three-dimensional morphological changes within the Li3PS4 electrolyte, away from the anode.
- Identified electronic conduction from decomposition products and the electrolyte/void interface as key drivers of lithium deposition.
Conclusions:
- The findings elucidate the detrimental processes leading to lithium dendrite growth in Li3PS4 solid electrolytes.
- Understanding these mechanisms is crucial for designing stable lithium metal all-solid-state batteries.
