Related Experiment Video
Updated: Jun 23, 2025
06:58
Zinc-Sponge Battery Electrodes that Suppress Dendrites
Published on: September 29, 2020
4.3K
Switching Hydrophobic Interface with Ionic Valves for Reversible Zinc Batteries
Di Tang1,2,3, Xinyue Zhang4, Daliang Han1,2,3
1Nanoyang Group, Tianjin Key Laboratory of Advanced Carbon and Electrochemical Energy Storage, School of Chemical Engineering and Technology, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin, 300072, China.
Advanced Materials (Deerfield Beach, Fla.)
|June 20, 2024
Summary
Researchers developed an adaptive hydrophobic interface for aqueous zinc batteries. This interface controls water presence, enhancing zinc plating and stripping for improved battery performance and longevity.
Area of Science:
- Electrochemistry
- Materials Science
- Energy Storage
Background:
- Hydrophobic interfaces are crucial for suppressing dendrite growth in aqueous zinc (Zn) batteries.
- However, these interfaces hinder Zn2+ solvation and ionic transport during Zn stripping, limiting battery reversibility.
Purpose of the Study:
- To design an adaptive hydrophobic interface that dynamically adjusts water management during Zn plating and stripping.
- To improve the cycling stability and Coulombic efficiency of aqueous Zn batteries.
Main Methods:
- Utilizing octyltrimethyl ammonium bromide (C8TAB) as an ionic valve to control interface hydrophobicity.
- Implementing electric-field-directed switching of the hydrophobic interface during plating and stripping cycles.
Main Results:
- The adaptive interface successfully managed interfacial water, enabling efficient Zn plating and stripping.
- The Zn anode demonstrated extended cycling life (>2500 h) with high Coulombic efficiency (≈99.8%).
- Full cells achieved over 85% capacity retention after 1000 cycles at 5 A g-1.
Conclusions:
- The proposed adaptive hydrophobic interface offers a novel strategy for enhancing aqueous metal battery performance.
- This approach provides a new perspective on interface engineering for advanced energy storage systems.
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