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Updated: Apr 18, 2026

Zinc-Sponge Battery Electrodes that Suppress Dendrites
Published on: September 29, 2020
Electrochemical performance of electrodeposited Zn4Sb3 films for sodium-ion secondary battery anodes
E D Jackson1, S Green1, A L Prieto1
1Department of Chemistry, Colorado State University, Fort Collins, Colorado, United States.
Abstract:
We report the electrodeposition of zinc-antimony composite films from aqueous solution. We show that it is possible to produce Zn4Sb3 films on zinc substrates by low-temperature annealing and we evaluate their performance as sodium-ion battery anodes. Near complete utilization of the antimony (>90%) during cycling, good cycle life (>250 cycles), and high rate performance is demonstrated for Zn4Sb3 thin films. Interestingly, when Zn4Sb3 transforms in situ to an amorphous zinc-antimony composite, it shows superior performance to zinc-antimony composites that are initially amorphous. This demonstrates the importance of the initial electrode structure on promoting the sodium alloying reaction.
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