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Related Concept Videos

Standard Electrode Potentials03:02

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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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Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
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Leveling the Zn Anode by Crystallographic Orientation Manipulation.

Jinqiu Zhou1, Baojiu Hao1, Yuan Meng1

  • 1School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China.

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|November 3, 2023
PubMed
Summary

A novel leveling agent (1,4-butynediol) effectively suppresses dendrite growth and corrosion in aqueous zinc metal batteries (ZMBs). This innovation enhances battery stability and reversibility for large-scale energy storage applications.

Keywords:
Zn metal anodecrystallographic orientationleveling agentpreferential adsorptiontraditional electroplating industry

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Area of Science:

  • Electrochemistry
  • Materials Science
  • Energy Storage

Background:

  • Aqueous zinc metal batteries (ZMBs) face challenges with dendrite growth and corrosion at Zn anodes, limiting their reversibility and scalability.
  • These issues hinder the widespread adoption of ZMBs for large-scale energy storage solutions.

Purpose of the Study:

  • To investigate the use of a low-cost leveling agent (LEA), 1,4-butynediol, to mitigate dendrite formation and corrosion in Zn metal anodes.
  • To enhance the stability and reversibility of aqueous ZMBs through surface modification of the zinc electrode.

Main Methods:

  • Theoretical calculations and in situ experimental characterizations to study LEA adsorption and its effect on Zn deposition.
  • Utilizing 1,4-butynediol as an electrolyte additive in symmetric and full ZMB cells.

Main Results:

  • Preferential adsorption of LEA molecules on specific lattice planes guided crystallographic orientation, inhibiting Zn dendrite growth.
  • LEA adsorption effectively prevented undesirable corrosion on the Zn metal surface.
  • Symmetric and full ZMB cells with LEA additive demonstrated significantly improved stability and reversibility.

Conclusions:

  • 1,4-butynediol acts as an effective additive for leveling Zn deposition, suppressing dendrites, and preventing corrosion in aqueous ZMBs.
  • This study offers a new strategy for introducing electroplating additives into ZMBs, guiding electrolyte additive selection.
  • The findings have potential implications for improving other metal anode systems in batteries.