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Updated: May 15, 2025

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

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Omnidirectionally Stretchable High-Performance Microbatteries Based on Nanocomposite Current Collectors.

Sisi Li¹, Ting Fang¹, Qianying Lu¹

¹College of Engineering and Applied Sciences, State Key Laboratory of Analytical Chemistry for Life Science, and Jiangsu Key Laboratory of Artificial Functional Materials, Nanjing University, Nanjing 210021, China.

|May 2, 2025

Summary

Researchers developed omnidirectionally stretchable zinc-manganese dioxide (Zn-MnO2) microbatteries. These innovative energy storage devices offer high capacity and robust performance for advanced wearables and robotics.

Keywords:

conductive nanocomposites microbattery stretchable batteries stretchable electronics wearable electronic devices

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Area of Science:

Materials Science
Electrochemistry
Wearable Technology

Background:

Stretchable electronics require compatible energy storage solutions.
Existing microbatteries often lack sufficient strain tolerance and omnidirectional flexibility.
Demand for high-performance, deformable power sources is increasing for wearables and robotics.

Purpose of the Study:

To develop omnidirectionally stretchable microbatteries with enhanced performance.
To introduce novel nanocomposite current collectors for improved strain dissipation.
To demonstrate the integration of these microbatteries into functional wearable systems.

Main Methods:

Fabrication of Zn-MnO2 microbatteries utilizing serpentine-patterned silver nanowire and carbon nanotube nanocomposite current collectors.
Embedding nanocomposites within a soft elastomer for strain management.
Electrochemical performance testing under various strain conditions.
Integration of microbattery cells with wireless charging and LED arrays.

Main Results:

Achieved high capacity (>1.5 mAh cm-2) and excellent rate capability (up to 5.0 mA cm-2).
Demonstrated robust electrochemical performance under omnidirectional and biaxial strains.
Successfully created a wearable system conforming to body movements.

Conclusions:

The novel nanocomposite current collectors enable omnidirectional stretchability in microbatteries.
The developed microbatteries offer a promising solution for energy storage in deformable electronic systems.
This work provides a new design paradigm for high-performance, stretchable energy storage devices.