Related Experiment Video
Updated: May 9, 2026
05:33
Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
Published on: August 12, 2013
Granular Creep and Its Role in Optimizing Solid Electrolyte Fabrication for All-Solid-State Batteries
Joseph M Vazquez Mercado1, Fernando D Cúñez2, Alhamdu Nuhu Bage3
1Department of Mechanical Engineering, Rochester Institute of Technology, Rochester, New York, USA.
Small Methods
|May 8, 2026
Summary
Low strain rates enhance solid electrolyte densification through granular creep, improving all-solid-state battery performance. This processing optimizes microstructure and ionic transport for next-generation batteries.
Area of Science:
- Materials Science
- Chemical Engineering
- Electrochemistry
Background:
- Solid electrolyte (SE) densification is vital for all-solid-state battery (ASSB) performance and stability.
- Understanding the mechanisms governing SE densification is key to fabricating high-performance batteries.
Purpose of the Study:
- Investigate the role of granular creep in SE densification.
- Analyze the impact of strain rate and cohesion on SE microstructure and properties.
- Validate numerical findings with experimental results.
Main Methods:
- Discrete element method (DEM) simulations to model granular creep.
- Experimental validation using Li6PS5Cl separators.
- Microstructural analysis via X-ray computed tomography (XCT) and scanning electron microscopy (SEM).
- Electrochemical testing, including critical current density (CCD) measurements.
Main Results:
- Low strain rates promote granular creep, leading to better particle rearrangement, stress relaxation, and reduced porosity.
- Experimental results confirm that lower strain rates yield a more homogeneous microstructure.
- Samples processed at the lowest strain rate demonstrated a 3x higher critical current density (CCD) compared to those processed faster.
Conclusions:
- Strain-rate-controlled processing is crucial for optimizing SE microstructure, mechanical integrity, and electrochemical performance.
- Granular creep plays a significant role in achieving high packing density and enhanced ionic transport.
- Findings provide insights for fabricating high-density, high-performance separators for advanced ASSBs.
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