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Updated: Dec 31, 2025

Zinc-Sponge Battery Electrodes that Suppress Dendrites

Zinc-Sponge Battery Electrodes that Suppress Dendrites

Published on: September 29, 2020

A Sponge-Driven Elastic Interface for Lithium Metal Anodes.

Han Yu¹, Jian Xie¹, Na Shu¹

¹Hefei National Research Center for Physical Sciences at the Microscale and Department of Materials Science and Engineering and CAS Key Laboratory of Materials for Energy Conversion, University of Science and Technology of China, Hefei, Anhui 230026, China.

Research (Washington, D.C.)

|January 11, 2020

Summary

This summary is machine-generated.

Researchers developed an elastic interface using a melamine sponge for lithium metal anodes. This stabilizes the battery interface, improving cycling efficiency and suppressing dendrite formation for next-generation batteries.

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Last Updated: Dec 31, 2025

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Area of Science:

Materials Science
Electrochemistry
Energy Storage

Background:

Lithium metal anodes are crucial for high-energy-density batteries.
Instability arises from stress fluctuations and uneven lithium deposition.
Existing interfaces often lack elasticity and uniform ion transport.

Purpose of the Study:

To engineer a stable and elastic interface for lithium metal anodes.
To improve cycling stability and Coulombic efficiency.
To suppress lithium dendrite formation.

Main Methods:

Incorporating a melamine sponge between the lithium anode and separator.
Utilizing in situ compression-electrochemistry measurements.
Evaluating cycling performance and rate capability.

Main Results:

Achieved 98.8% Coulombic efficiency over 60 cycles.
Demonstrated stable cycling at 10 mA cm⁻² for 250 cycles with 10 mAh cm⁻² capacity.
Melamine sponge enhanced ion transport and lithium deposition uniformity.
Superior performance compared to conventional polypropylene separators.

Conclusions:

The elastic melamine sponge effectively stabilizes the lithium metal anode interface.
This approach significantly enhances battery cycling stability and rate performance.
The sponge's structure and properties enable uniform lithium deposition and dendrite suppression.