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Updated: Jul 28, 2025

Zinc-Sponge Battery Electrodes that Suppress Dendrites

Zinc-Sponge Battery Electrodes that Suppress Dendrites

Published on: September 29, 2020

Heterostructured Interface Enables Uniform Zinc Deposition for High-Performance Zinc-Ion Batteries.

Zhenjing Jiang¹, Kuibo Yin¹, Rui Pan¹

¹SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of Ministry of Education, Southeast University, Nanjing, 210096, China.

Small (Weinheim an Der Bergstrasse, Germany)

|May 28, 2023

Summary

A novel heterostructured interface on zinc anodes prevents dendrite growth and parasitic reactions. This breakthrough enables stable, high-performance aqueous batteries with extended lifespans.

Keywords:

Zn metal anodes aqueous zinc-ion batteries electrostatic attraction effect heterostructured interfaces nucleation sites

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Area of Science:

Materials Science
Electrochemistry
Energy Storage

Background:

Zinc metal anodes offer high theoretical capacity and environmental benefits for aqueous batteries.
Dendrite formation and interfacial side reactions hinder the performance and safety of zinc anodes.
Developing stable and efficient zinc anodes is crucial for next-generation energy storage.

Purpose of the Study:

To engineer a heterostructured interface on zinc anodes to overcome dendrite growth and parasitic reactions.
To investigate the role of a ZnO rod array and CuZn5 layer in promoting uniform zinc deposition.
To evaluate the electrochemical performance and cycling stability of the modified zinc anode.

Main Methods:

Fabrication of a heterostructured interface (ZnCu@Zn) comprising a ZnO rod array and CuZn5 layer on a zinc substrate.
Electrochemical testing of symmetric zinc cells to assess cycling stability and dendrite suppression.
Assembly and testing of ZnCu@Zn||MnO2 full cells to evaluate performance in a practical battery configuration.

Main Results:

The ZnCu@Zn anode demonstrated dendrite-free zinc electrodeposition.
Symmetric cells exhibited an ultra-long lifespan of 2500 hours at 0.5 mA cm-2.
Full cells showed remarkable cyclability with 75% capacity retention over 2500 cycles at 2 A g-1.

Conclusions:

The heterostructured interface effectively suppresses dendrite growth and parasitic reactions in zinc anodes.
The developed ZnCu@Zn anode offers a promising strategy for high-performance and long-lasting aqueous batteries.
This approach provides a feasible pathway for designing advanced metal anodes for energy storage applications.