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Updated: May 11, 2025
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Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
Published on: November 11, 2013
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Revealing Irradiation-Induced Dynamic Structural Failure in LiCoO2 Cathodes via Electron-Temperature-Dependent Deep
Pengfei Liu1, Yuanyuan Liu2, Xiaoya Zhang1
1School of Mathematics and Statistics, Zhengzhou University, Zhengzhou 450001, China.
The Journal of Physical Chemistry Letters
|April 18, 2025
Summary
Lithium-ion battery cathode materials degrade in space radiation. This study reveals irradiation causes structural changes and ion migration in LiCoO2 over nanoseconds, offering insights for more durable batteries.
Area of Science:
- Materials Science
- Battery Technology
- Radiation Effects
Background:
- Lithium-ion batteries (LIBs) are crucial for deep-space exploration.
- LiCoO2 cathode materials in LIBs suffer structural degradation and ion migration under high-radiation conditions.
Purpose of the Study:
- To investigate the dynamic structural evolution of LiCoO2 under irradiation.
- To understand the mechanisms of structural changes and ion migration in LiCoO2 during irradiation.
Main Methods:
- Utilized the electron-temperature-dependent deep potential (ETD-DP) model for simulations.
- Extended spatial and temporal scales compared to traditional ab initio molecular dynamics (AIMD).
- Validated simulation results with high-energy electron beam experiments and aberration-corrected electron microscopy.
Main Results:
- LiCoO2's response to irradiation occurs on the nanosecond time scale.
- Identified three stages: ion traversal, intense local structural adjustment, and structure relaxation.
- Observed transition metal ion migration to lithium layers and cobalt ion dumbbell formation.
Conclusions:
- The study provides critical insights into the irradiation tolerance of LIB cathode materials.
- Highlights the potential of advanced electron microscopy techniques for battery research.
- Offers strategies for developing more robust LIBs for extreme environments like deep space.
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