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Related Concept Videos

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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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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Standard Electrode Potentials

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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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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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Seed-Promoted Patch-Like Deposition for Dynamic Protection and Ion Transport Synergy to Achieve Stable Zinc-Powder

Dongshu Liu1, Shibo Meng1, Yuchao Chen1

  • 1State Key Laboratory of Advanced Separation Membrane Materials, College of Materials Science and Engineering, College of Chemical Engineering, Zhejiang University of Technology, 18 Chaowang Road, Hangzhou, Zhejiang, 310014, P. R. China.

Small (Weinheim an Der Bergstrasse, Germany)
|August 21, 2025
PubMed
Summary

A novel seed-promoted strategy creates a protective film for stable zinc powder anodes in rechargeable zinc-ion batteries. This innovation addresses dendrite growth and corrosion, enabling long-term, high-performance energy storage.

Keywords:
Zn depositiondynamic protection layerhigh depth of dischargezinc powder anode

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Storage

Background:

  • Zinc powder anodes are promising for rechargeable zinc-ion batteries due to cost and tunability.
  • Corrosion and uncontrolled dendrite growth limit the practical application of zinc powder anodes.
  • A key challenge is anchoring zincophilic sites on non-planar zinc particles during cycling.

Purpose of the Study:

  • To develop a stable zinc powder anode using a seed-promoted deposition strategy.
  • To address volume changes and structural instability during zinc deposition and stripping.
  • To enhance the performance and durability of zinc-ion batteries.

Main Methods:

  • A seed-promoted patch-like deposition strategy was employed to create a protective film on zinc powder.
  • Zincophilic nucleation sites were rationally implanted to induce a specific film morphology.
  • The engineered structure was analyzed for its protective and ion-transport capabilities.

Main Results:

  • A flexible, scale-armor-inspired protective layer with patch-like morphology was formed on zinc powder.
  • The engineered structure effectively buffered mechanical stress and stabilized zinc deposition/stripping.
  • Symmetrical cells demonstrated ultra-stable operation for ≈1,600 hours and excellent durability at 75% depth of discharge.

Conclusions:

  • The seed-promoted patch-like deposition strategy enables a stable and high-performance zinc powder anode.
  • The dynamic protective film addresses critical challenges in zinc anode development.
  • This work offers insights for designing cost-effective anodes for next-generation zinc-ion batteries.