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Electrodeposition01:08

Electrodeposition

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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.
Electrodeposition can...
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Extraction: Advanced Methods00:56

Extraction: Advanced Methods

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Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
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Formation of Complex Ions03:45

Formation of Complex Ions

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A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...
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Colloidal precipitates01:09

Colloidal precipitates

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The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
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Batteries and Fuel Cells

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A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
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Updated: Mar 10, 2026

Zinc-Sponge Battery Electrodes that Suppress Dendrites
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Dynamic Alloying Codeposition/Costripping for Dendrite-Less Multivalent Metal Batteries.

Lujun Zhu1, Zhitong Xiao1, Jiashen Meng1

  • 1Beijing Key Laboratory for Theory and Technology of Advanced Battery Materials, School of Materials Science and Engineering, Peking University, Beijing 100871, China.

Journal of the American Chemical Society
|March 8, 2026
PubMed
Summary
This summary is machine-generated.

A new dynamic alloying strategy suppresses aluminum dendrites in multivalent metal batteries. This method enables stable, high-rate aluminum anodes for advanced energy storage, overcoming key limitations for practical applications.

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Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Storage

Background:

  • Multivalent metal batteries offer sustainable, low-cost energy storage solutions.
  • Aluminum metal batteries face challenges with dendritic growth at practical operating conditions.

Purpose of the Study:

  • To develop a strategy for suppressing aluminum dendrites in aluminum metal batteries.
  • To enable stable and high-performance aluminum anodes for large-scale energy storage.

Main Methods:

  • An electrochemically driven dynamic alloying codeposition/costripping strategy was employed.
  • The strategy utilizes Al-Mn-Cl-active clusters in a chloroaluminate electrolyte.
  • This facilitates dynamic Al-Mn codeposition and reversible costripping.

Main Results:

  • A smooth, dendrite-free aluminum anode was achieved under practical conditions.
  • The aluminum anode demonstrated over 1000 hours of cycling stability at 10 mA cm-2 and 20 mA h cm-2.
  • Aluminum|graphite cells reached a 4000-cycle lifespan at 24.6 mA cm-2.

Conclusions:

  • The dynamic alloying strategy effectively suppresses aluminum dendrites.
  • This approach paves the way for stable, high-rate, dendrite-less multivalent metal anodes.
  • The findings are crucial for advancing next-generation large-scale energy storage systems.