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  1. Home
  3. Multifunctional Core-shell Structured Interface Layer Regulate Zn Deposition Behavior And Anti-polyiodide Ions Towards Ultralong-life Zn-i2 Battery.
  1. Home
  3. Multifunctional Core-shell Structured Interface Layer Regulate Zn Deposition Behavior And Anti-polyiodide Ions Towards Ultralong-life Zn-i2 Battery.

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Multifunctional Core-Shell Structured Interface Layer Regulate Zn Deposition Behavior and Anti-Polyiodide Ions

Yueyue Qiao1, Zixun Zhou1, Qiushao Yang1

  • 1Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, College of Materials Science and Engineering, Nanjing Tech University, Nanjing, China.

Small (Weinheim an Der Bergstrasse, Germany)
|June 16, 2026

View abstract on PubMed

Summary
This summary is machine-generated.

A novel core-shell structured InHCF@ZIF-8 (IHZ) interface layer effectively suppresses zinc dendrites and polyiodide shuttling in zinc-iodine (Zn-I2) batteries. This innovation significantly enhances battery lifespan and performance for advanced energy storage.

Keywords:
Zn deposition behaviorZn‐I2 batterieselectrostatic repulsion I3−long cycling lifemultifunctional interface layer

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Storage

Background:

  • Zinc-iodine (Zn-I2) batteries offer high voltage and abundant resources but suffer from zinc dendrite growth and polyiodide shuttling.
  • These issues limit the practical application and cycle life of Zn-I2 batteries.

Purpose of the Study:

  • To develop a multifunctional interface layer for zinc anodes to overcome the limitations of Zn-I2 batteries.
  • To enhance the stability, efficiency, and lifespan of Zn-I2 batteries through improved zinc anode performance.

Main Methods:

  • A core-shell structured InHCF@ZIF-8 (IHZ) material was synthesized using electrostatic self-assembly.
  • The IHZ layer was applied to zinc anodes to investigate its effect on zinc deposition and battery performance.
  • Symmetric cells and full Zn-I2 batteries with the modified anode were tested for cycling stability, rate capability, and self-discharge.

    • Main Results:

    • The IHZ layer induced uniform zinc deposition and homogeneous distribution of the electric field and Zn2+ flux via a dual coordination mechanism.
    • IHZ effectively suppressed zinc dendrite nucleation and growth by directing horizontal zinc deposition and mitigated self-discharge through electrostatic repulsion of I3-.
    • Symmetric cells achieved an ultralong cycle life of 6490 h, and Zn-I2 batteries demonstrated a lifespan exceeding 14800 cycles with excellent capacity and rate capability.

    Conclusions:

    • The developed InHCF@ZIF-8 interface layer is a promising strategy for stabilizing zinc anodes in Zn-I2 batteries.
    • This approach significantly enhances the cycle life, capacity, and rate performance, paving the way for practical applications of high-energy-density zinc batteries.