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Molecule-Interhalogen Soft Colloidal Electrode for High-Voltage Stable Aqueous Zinc-Ion Batteries
Kaiqiang Zhang1, Chao Wu1, Qinhan Yang1
1School of Energy Sciences and Engineering, Nanjing Tech University, Nanjing, Jiangsu, 211816, China.
Small (Weinheim an Der Bergstrasse, Germany)
|July 27, 2025
Summary
Molecule-based interhalogens in aqueous zinc batteries significantly improve performance by shifting redox reactions. This approach suppresses side reactions, achieving near 100% Coulombic efficiency for practical applications.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Halogen anion-based interhalogens are promising for aqueous zinc batteries.
- High operating voltages cause parasitic reactions, reducing efficiency and hindering application.
Purpose of the Study:
- To introduce a molecule-based interhalogen (M-interhalogen) for aqueous zinc batteries.
- To investigate its interactions as a cathode material.
- To enhance battery performance by suppressing side reactions.
Main Methods:
- Incorporation of M-interhalogen within a soft colloidal host.
- Electrochemical characterization of the cathode material.
- Performance evaluation of aqueous zinc batteries.
Main Results:
- A significant shift in redox reactions to a 1.2–1.6 V window versus Zn/Zn2+ was achieved.
- Parasitic side reactions were greatly suppressed.
- Coulombic efficiencies approaching 100% and stable cycling were demonstrated.
Conclusions:
- M-interhalogen within a soft colloidal host effectively enhances aqueous zinc battery performance.
- This design strategy suppresses parasitic reactions, improving efficiency and stability.
- Provides insights for the practical deployment of aqueous zinc-halogen batteries.
Keywords:
aqueous zinc batterieshigh working voltagelong lifespanmolecule‐interhalogenssoft colloidal electrodesMore Related Videos
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