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Related Experiment Video

Updated: Jun 14, 2026

$In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries$

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Patterning Planar, Flexible Li-S Battery Full Cells on Laser-Induced Graphene Traces.

Irene Lau¹, Adam I O Campbell¹, Debasis Ghosh²

¹Quantum Nano Centre, Department of Chemical Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada.

Nanomaterials (Basel, Switzerland)

|January 10, 2025

Summary

Researchers developed a laser-induced graphene (LIG) approach for flexible lithium-sulfur (Li-S) batteries. This method enables high sulfur loading and efficient lithium deposition for promising energy storage applications.

Keywords:

Li-S batteries Li-electroplating flexible batteries laser-induced graphene planer-interdigitated electrodes

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Preparation of Graphene Liquid Cells for the Observation of Lithium-ion Battery Material

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Published on: February 5, 2019

Area of Science:

Materials Science
Electrochemistry
Energy Storage

Background:

Laser-induced graphene (LIG) is a versatile material for rapid prototyping of electronic and electrochemical devices using CO2 lasers.
Existing LIG applications primarily focus on supercapacitors, with limited development for battery technologies, especially full cells.
Developing efficient methods for patterning battery components is crucial for advancing flexible energy storage.

Purpose of the Study:

To report a novel LIG-based approach for fabricating planar, interdigitated lithium-sulfur (Li-S) batteries.
To demonstrate the selective deposition of sulfur onto LIG cathode fingers and lithium metal onto LIG anode fingers.
To evaluate the performance characteristics of the resulting binder/separator-free flexible Li-S battery.

Main Methods:

Sulfur deposition via selective nucleation and growth on LIG cathode fingers from a supersaturated solution, followed by melt imbibition.
Lithium metal anode electrodeposition onto LIG anode fingers using a silver-seeded, pulse-reverse-pulse method.
Fabrication of a planar, interdigitated, binder/separator-free flexible Li-S battery structure.

Main Results:

Achieved high sulfur loadings of 3.9 mg/cm² and 75 wt% sulfur on LIG cathode fingers.
Enabled lithium metal anode loadings up to 10.5 mAh/cm² without short-circuiting.
The flexible Li-S battery demonstrated a capacity exceeding 1 mAh/cm² and an energy density of 200 mWh/cm³.

Conclusions:

The LIG-based approach successfully enables the fabrication of interdigitated Li-S batteries with high performance metrics.
The binder/separator-free design and flexible nature show potential for advanced energy storage solutions.
The interdigitated structure is suitable for future in-depth studies of Li-S battery degradation and related chemistries.