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Related Concept Videos

Voltammetry: Stripping Methods01:13

Voltammetry: Stripping Methods

202
Anodic Stripping Voltammetry (ASV), Cathodic Stripping Voltammetry (CSV), and Adsorptive Stripping Voltammetry (AdSV) are electrochemical techniques used to determine trace amounts of analytes in solution. These methods involve applying a potential to an electrode and measuring the resulting current.
Anodic Stripping Voltammetry (ASV)
ASV is used to determine metals and metalloids at trace levels. It involves two steps: deposition and stripping. First, a negative potential is applied to the...
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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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Standard Electrode Potentials03:02

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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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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Corrosion02:49

Corrosion

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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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Related Experiment Video

Updated: Jun 23, 2025

Simultaneous Multi-surface Anodizations and Stair-like Reverse Biases Detachment of Anodic Aluminum Oxides in Sulfuric and Oxalic Acid Electrolyte
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Oriented Metal Stripping for Highly Reversible Zinc Anode.

Shimeng Zhang1, Yu Wu1, Jianxiong Gao1

  • 1State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China.

Small (Weinheim an Der Bergstrasse, Germany)
|June 17, 2024
PubMed
Summary

This study introduces an oriented metal stripping strategy to stabilize zinc anodes in aqueous zinc batteries. By using sodium citrate, the strategy enhances cycling efficiency and battery lifespan, paving the way for advanced energy storage.

Keywords:
aqueous zinc metal batterieselectrolyte additivesoriented metal strippingtexture engineeringzinc metal anodes

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Storage

Background:

  • Aqueous zinc metal batteries are promising for next-generation energy storage.
  • Poor cycling efficiency of zinc anodes, particularly dendrite formation, hinders their practical application.
  • Current strategies primarily focus on zinc plating, neglecting the stripping process.

Purpose of the Study:

  • To develop an oriented metal stripping strategy for stabilizing zinc anodes.
  • To improve the cycling efficiency and lifespan of aqueous zinc metal batteries.
  • To investigate the role of anionic additives in controlling zinc stripping and plating.

Main Methods:

  • Addition of anionic additive sodium citrate (SC) to regulate zinc stripping.
  • Utilizing high-index facets that coordinate with SC for preferential stripping.
  • Exposing the stable (002) plane for enhanced epitaxial plating.
  • Characterization of zinc anode morphology and electrochemical performance in symmetric cells and Zn//I2 batteries.

Main Results:

  • Achieved an ultra-high proportion of 93% for the (002) plane and large-size grains (≈100 µm).
  • Demonstrated continuous cycling for 25,000 cycles with low overpotential at 100 mA cm⁻².
  • Maintained stable operation for over 70 hours at an ultra-high depth of discharge of 92.3%.
  • Achieved a long lifespan of 12,000 cycles at 10 A g⁻¹ with 89% capacity retention in a Zn//I2 battery.

Conclusions:

  • The oriented metal stripping strategy effectively stabilizes the zinc anode by controlling facet exposure.
  • Preferential stripping of high-index facets using sodium citrate promotes uniform zinc plating.
  • This approach significantly enhances the cycling stability and energy density of aqueous zinc metal batteries.
  • The findings offer a novel strategy for designing high-performance zinc anodes for future energy storage applications.