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Updated: Jul 9, 2025
06:58
Zinc-Sponge Battery Electrodes that Suppress Dendrites
Published on: September 29, 2020
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Inert Group-Containing Electrolyte Additive Enabling Stable Aqueous Zinc-Ion Batteries.
Hanhao Liang1,2, Jian Wu1,2, Jiancheng Xu1,2
1Hunan Province Key Laboratory of Chemical Power Source, College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China.
Small (Weinheim an Der Bergstrasse, Germany)
|November 30, 2023
Summary
Trisodium methylglycine diacetate (Na3MGDA) with a methyl group improves aqueous zinc ion battery (AZIB) anode stability by preventing side reactions and dendrite growth. This enhances cycle life for energy storage applications.
Area of Science:
- Electrochemistry
- Materials Science
- Energy Storage
Background:
- Aqueous zinc ion batteries (AZIBs) offer high energy density and cost-effectiveness.
- Challenges include side reactions and zinc dendrite growth, hindering practical use.
Purpose of the Study:
- To investigate the role of a methyl group in trisodium methylglycine diacetate (Na3MGDA) for Zn anode protection.
- To enhance the interfacial stability of AZIBs.
Main Methods:
- Introduction of Na3MGDA additive with a methyl group for Zn anode.
- Analysis of the interaction between the additive and the Zn anode.
- Electrochemical testing of Zn||Zn symmetric and Zn||V6O13 full batteries.
Main Results:
- The methyl group enhances Na3MGDA interaction with the Zn anode.
- A hydrophobic electrical double layer (EDL) with steric hindrance is formed, improving Zn deposition selectivity.
- Na3MGDA significantly inhibits parasitic reactions.
Conclusions:
- The methyl group in Na3MGDA plays a crucial role in stabilizing the Zn anode interface.
- Na3MGDA additive enables high-performance AZIBs with extended cycle life.
- This highlights the importance of inert groups in additives for interfacial engineering.
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