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Related Concept Videos

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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Membrane electrodes, also known as p-ion electrodes, use membranes that selectively interact with free analyte ions, generating a potential difference across the membrane. The resulting membrane potential, known as the asymmetry potential, is not zero even when analyte concentrations on both sides of the membrane are equal. The membrane's response is typically not selective to a single analyte but proportional to the concentration of all ions in the sample solution capable of interacting at...
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Electrodeposition01:08

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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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Spontaneous Chemical Reactions
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Updated: May 22, 2025

Zinc-Sponge Battery Electrodes that Suppress Dendrites
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Biomimetic Localized Gel Electrolyte for Practical Zinc Anode.

Yibo Zhu1, Shengyong Gao2, Shuangbin Zhang2

  • 1State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials Technology, National Engineering Research Center for Fuel Cell and Hydrogen Source, Beijing University of Chemical Technology, Beijing, 100029, P.R. China.

Angewandte Chemie (International Ed. in English)
|March 12, 2025
PubMed
Summary

Researchers developed a biomimetic antifreeze protein localized gel electrolyte (ALGE) to stabilize zinc anodes. This innovation suppresses dendrite growth and corrosion, significantly extending battery life for advanced energy storage.

Keywords:
Hydrogen bond networkInterfacial gelationLocalized gel electrolyteSolvation structureZinc anode

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Area of Science:

  • Electrochemistry
  • Materials Science
  • Biomaterials

Background:

  • Zinc anodes face challenges like dendrite growth, parasitic reactions, and corrosion due to incompatible electrode/electrolyte interfaces.
  • These issues hinder the widespread application of zinc anodes in energy storage systems.

Purpose of the Study:

  • To introduce a multifunctional biomimetic antifreeze protein localized gel electrolyte (ALGE).
  • To address challenges in zinc anode stability by combining electrolyte modification and interface optimization.

Main Methods:

  • Developing a localized gel electrolyte incorporating antifreeze proteins.
  • Investigating the modification of Zn2+ solvation structure and hydrogen-bond network.
  • Analyzing protein-zinc surface interactions to promote controlled zinc deposition.
  • Evaluating ALGE performance in symmetric zinc cells and pouch cells.

Main Results:

  • ALGE effectively suppresses hydrogen evolution and promotes dendrite-free zinc deposition dominated by the (002)Zn crystal plane.
  • The ALGE-modified zinc anode demonstrated a lifespan of 610 hours in symmetric cells at 10 mA cm-2.
  • Pouch cells with ALGE-modified anodes retained 75.8% capacity after 200 cycles at 1 A g-1.
  • ALGE significantly inhibited corrosion and prevented by-product formation.

Conclusions:

  • The biomimetic antifreeze protein localized gel electrolyte (ALGE) offers a practical and scalable strategy for stabilizing zinc anodes.
  • ALGE enhances zinc anode performance by modifying the electrolyte and optimizing the electrode interface.
  • This approach holds promise for advancing next-generation energy storage systems.