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Related Experiment Video

Updated: Nov 2, 2025

Failure Analysis of Batteries Using Synchrotron-based Hard X-ray Microtomography

Failure Analysis of Batteries Using Synchrotron-based Hard X-ray Microtomography

Published on: August 26, 2015

Fast Li Plating Behavior Probed by X-ray Computed Tomography.

Hongyi Pan¹, Tianyu Fu², Guibin Zan³

¹Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.

|June 9, 2021

Summary

This summary is machine-generated.

Uneven lithium plating in lithium metal anodes causes battery failure. Observing this process in situ using X-ray computed tomography reveals how microstructure and large currents lead to porous lithium deposition and eventual cell breakdown.

Keywords:

X-ray computed tomography dendrite lithium metal anode lithium metal battery lithium plating

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Area of Science:

Materials Science
Electrochemistry
Battery Technology

Background:

Stable cycling of lithium metal anodes is critical for advanced batteries.
Uneven lithium plating and stripping remain a major obstacle to their practical application.
Observing lithium behavior in operating devices is experimentally challenging.

Purpose of the Study:

To visualize and analyze microscopic lithium plating behavior in situ.
To understand the evolution of lithium deposition under practical charging conditions.
To identify factors contributing to uneven lithium plating in lithium metal anodes.

Main Methods:

Utilized X-ray computed tomography (CT) for in situ observation.
Employed a close-to-practical cell setup for realistic testing.
Analyzed the spatial and temporal evolution of lithium microstructure during charging.

Main Results:

Successfully observed the formation and progression of porous lithium structures during plating.
Demonstrated that the microstructure of deposited lithium significantly influences subsequent plating.
Showed that large-current charging exacerbates structural inhomogeneity, leading to uneven plating.

Conclusions:

In situ X-ray CT is a powerful tool for studying lithium plating dynamics.
Microstructure and electrochemical conditions, especially under high current, are key to controlling lithium plating.
A codesign strategy is essential for developing stable lithium metal anodes for next-generation batteries.