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Corrosion02:49

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The degradation of metals due to natural electrochemical processes is known as corrosion. Rust formation on iron, tarnishing of silver, and the blue-green patina that develops on copper are examples of corrosion. Corrosion involves the oxidation of metals. Sometimes it is protective, such as the oxidation of copper or aluminum, wherein a protective layer of metal oxide or its derivatives forms on the surface, protecting the underlying metal from further oxidation. In other cases, corrosion is...
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On comparing the reactivity of silver and lead, it is observed that the two ionic species, Ag+ (aq) and Pb2+ (aq), show a difference in their redox reactivity towards copper: the silver ion undergoes spontaneous reduction, while the lead ion does not. This relative redox activity can be easily quantified in electrochemical cells by a property called cell potential. This property is commonly known as cell voltage in electrochemistry, and it is a measure of the energy which accompanies the charge...
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Electrodeposition is a technique used to separate an analyte from interferents by electrochemical processes. Here, the analyte is a metal ion that can be deposited on an electrode immersed in the sample solution. The electrochemical setup consists of an anode and a cathode. When an electric current is applied to the setup, oxidation occurs at the anode. At the cathode, which consists of a large metal surface, metal ions undergo reduction and deposit onto the surface.
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EDTA titrations are usually carried out in highly basic conditions, where the fully deprotonated form of EDTA, Y4−, actively complexes with the free metal ions in the solution. Several metal ions precipitate as hydrous oxide (hydroxides, oxides, or oxyhydroxides) under these conditions, lowering the concentration of free metal ions in the solution. For this reason, auxiliary complexing agents or ligands such as ammonia, tartrate, citrate, or triethanolamine are used in EDTA titrations to...
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Updated: Mar 30, 2026

Zinc-Sponge Battery Electrodes that Suppress Dendrites
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Claw-Like Macromolecular Engineering for Stabilizing Zinc Anodes Under High-Current Operation.

Xiao Yu1, Jiaming Li1, Jiaqi Li1

  • 1Hunan Province Key Laboratory of Chemical Power Source, College of Chemistry and Chemical Engineering, Central South University, Changsha, China.

Small Methods
|March 28, 2026
PubMed
Summary

This study introduces Tris(3,6-dioxaheptyl)amine (TDA-1) as a novel electrolyte additive to stabilize zinc anodes. TDA-1 promotes uniform zinc deposition and enhances battery cycling performance under high-current conditions.

Keywords:
3D macromolecule additiveselectrode/electrolyte interface regulationsteric hindrancezinc anodeszinc dendrite

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Area of Science:

  • Electrochemistry
  • Materials Science
  • Energy Storage

Background:

  • High-current operation in zinc batteries causes uneven deposition and side reactions due to mass transport limitations.
  • Stabilizing the electrolyte/electrode interface (EEI) is crucial for high-performance zinc-based energy storage.

Purpose of the Study:

  • To develop an electrolyte modification strategy for stabilizing zinc anodes under high-current conditions.
  • To investigate the role of Tris(3,6-dioxaheptyl)amine (TDA-1) in enhancing zinc deposition and battery stability.

Main Methods:

  • Theoretical calculations and experimental validation were employed.
  • Electrolyte modification using Tris(3,6-dioxaheptyl)amine (TDA-1) additive.
  • Fabrication and testing of Zn||Zn symmetric and Zn||VNNC full batteries.

Main Results:

  • TDA-1, with its claw-like structure and polar groups, effectively stabilizes the EEI by reconstructing the electric double layer (EDL).
  • The additive reduces Zn2+ desolvation energy and optimizes ion migration, enabling uniform zinc deposition.
  • Zn||Zn batteries cycled stably for 1000 hours at 20 mA·cm-2; Zn||VNNC batteries showed improved capacity retention.

Conclusions:

  • Macromolecular additives with specific spatial structures can significantly enhance zinc anode stability.
  • TDA-1 offers a promising approach for developing high-current density zinc batteries.
  • The findings pave the way for advanced electrolyte engineering in next-generation energy storage systems.