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Visualize Electrolyte Dynamics in Lithium-ion Battery Heating Testing Without Sectioning 

Track thermal effects, gas evolution, and electrolyte movement in lithium-ion battery heating using non-destructive 4D imaging with Tescan UniTOM XL.

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Analyze Changes in Lithium-Ion Cells Under Thermal Stress with Non-Destructive Micro-CT 

Thermal cycling in lithium-ion cells often leads to gas formation, electrolyte redistribution, or material delamination. But these changes are easily missed or distorted when using destructive cross-sectioning techniques to facilitate analysis. Even minor intervention can shift internal components, obscure cause–effect relationships, or eliminate the ability to monitor change over time.

Tescan UniTOM XL provides a non-destructive, in situ workflow that captures structural evolution as it happens. Maintain geometry, perform electrolyte dynamics visualization, and assess thermal behavior using high-resolution, time-lapse 3D imaging while keeping the cell fully intact.

Why Analyze Lithium-ion Battery Heating Behavior

with Tescan UniTOM XL?

01
Root of the Problem

Why Traditional Methods Present Limitations for Analyzing Lithium-Ion Battery Heating Behavior

Thermal behavior inside lithium-ion batteries involves changes in electrolyte distribution, internal pressure, and material interfaces. These shifts occur throughout the cell volume, but traditional techniques rely on destructive sectioning that distorts structure and misses key transitions.

Mechanical preparation can displace components or release gases, making it difficult to track thermal effects like electrolyte redistribution and gas pocket formation. Early-stage internal changes often go undetected, despite their importance for understanding degradation and thermal runaway.

Tescan UniTOM XL delivers a non-destructive workflow for in situ battery heating analysis. Structural changes are captured in real time while the cell remains sealed and fully intact, enabling accurate interpretation of battery behavior under thermal stress.

  • Time-lapse 3D imaging during controlled heating
  • Full-volume visualization of electrolyte and electrode shifts
  • Automated scan routines synchronized with temperature input
  • Non-destructive analysis with preserved internal geometry
  • Clear detection of gas pockets and material movement
  • Scalable for pouch cells, cylindrical formats, and wearables

Investigate thermal behavior in lithium-ion batteries with Tescan UniTOM XL while maintaining internal geometry and consistent results.

02
Materials and Methods

How Lithium-Ion Battery Heating Behavior Is Analyzed Using Tescan UniTOM XL

Battery cells were scanned in their intact state, with no cutting, disassembly, or coating required. Samples were mounted inside a custom in situ heating stage, which was then placed on the experimental table of the Tescan UniTOM XL battery analysis system.

Heating and imaging were fully synchronized through automated protocols, allowing structural changes to be tracked under controlled conditions without introducing motion or distortion. Time-lapse datasets were acquired at multiple temperatures to monitor electrolyte shifts and gas formation across full volume.

3D reconstruction and analysis were carried out using Tescan’s volumetric imaging software. Researchers evaluated internal pressure buildup, electrode displacement, and performed electrolyte dynamics visualization while maintaining cell integrity.

As a result, this non-destructive workflow supports consistent thermal analysis across pouch cells, cylindrical formats, and wearable batteries.

03
Results and Discussion

Clear Structural Evidence of Heat-Driven Changes in Lithium-ion Cells

Tescan UniTOM XL enabled researchers to capture high-resolution 3D datasets from intact cells during micro-CT battery heating experiments. Non-destructive imaging combined with synchronized thermal protocols revealed internal changes—without altering geometry or compromising repeatability.

Electrolyte redistribution, gas formation, and electrode displacement were visualized across the full cell volume. These features remained detectable even in compact formats such as wearables, where structural tolerances are tight.

Time-lapse micro-CT provided stepwise imaging throughout the heating cycle, offering detailed insight into how thermal stress affects internal structure.

With this approach, researchers obtained consistent, high-fidelity data across battery formats. This supported evaluation of failure risks, observation of heat-driven shifts, and a clearer understanding of how structural changes affect performance and safety.

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Tescan Instruments & Technology

Used in This Workflow

Tescan UniTOM XL 

Tescan UniTOM XL combines in situ thermal control with high-resolution micro-CT to visualize internal battery behavior as it unfolds. Its advanced imaging workflow captures structural changes in intact cells across temperature cycles, making it a powerful tool for investigating failure mechanisms in lithium-ion batteries.

  • In situ heating integration: enables synchronized temperature control during scanning

  • Time-lapse micro-CT: allows electrolyte dynamics visualization and reveals shifts in gas and electrode structure

  • Non-destructive acquisition: preserves cell integrity for repeatable testing

  • Flexible voxel resolution: captures both macrostructure and fine internal features

  • Stable imaging platform: reduces motion artifacts during lengthy or high-temperature scans

  • Advanced reconstruction tools: supports full-volume analysis across formats and time points 

 

MICRO_UniTOM_XL_1-2

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Where can you find us: 

Tescan Brno
Libušina třída 21
623 00 Brno
Czech Republic

info@Tescan.com 

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