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Updated: Jan 10, 2026
11:25
In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries
Published on: November 10, 2014
16.2K
Probing the Impact of Vacancy Diffusion on Void Dynamics at the Lithium Metal-Solid Electrolyte Interface.
Sourim Banerjee1, Bairav S Vishnugopi1, Partha P Mukherjee1
1School of Mechanical Engineering, Purdue University, West Lafayette, IN, 47907, USA.
Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|November 24, 2025
Summary
This study reveals how surface diffusion mechanisms and temperature control lithium metal anode stability in solid-state batteries. Understanding these factors is key to preventing void formation and improving battery performance.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Lithium metal solid-state batteries (SSBs) offer high energy density and safety.
- Interfacial void formation at the lithium-solid electrolyte interface hinders SSB performance.
Purpose of the Study:
- Investigate how electro-dissolution kinetics and surface diffusion affect lithium metal anode morphology during stripping.
- Explore mechanisms to maintain interfacial stability and overcome contact loss in SSBs.
Main Methods:
- Analyzed three surface diffusion modes: terrace, step, and interlayer diffusion.
- Quantified lithium metal anode surface roughness and examined dynamic interface evolution.
- Investigated the impact of temperature on lithium surface diffusivity.
Main Results:
- Identified distinct regimes of interface stability based on diffusion mechanisms and electrochemical dynamics.
- Demonstrated how dominant surface diffusion can mitigate contact loss caused by high reaction kinetics.
- Showcased the critical role of temperature in enhancing lithium diffusivity and stable contact.
Conclusions:
- Surface diffusion modes and temperature are crucial for stable lithium-solid electrolyte interfaces in SSBs.
- Understanding these dynamics provides principles for designing robust interfaces and improving battery longevity.
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