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Updated: Sep 19, 2025
11:25
In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries
Published on: November 10, 2014
15.9K
Crystallinity-Induced Ion Rectification in Polymer/Zn Interphases for Stable Aqueous Zinc Batteries
Yalan Guo1, Zhengang Li2, Xin Wang1
1Songshan Lake Materials Laboratory, Dongguan, 523808, China.
Advanced Materials (Deerfield Beach, Fla.)
|June 17, 2025
Summary
A novel polymer interphase stabilizes aqueous zinc batteries by controlling crystal orientation, enhancing ion transport and cycle life. This breakthrough addresses dendrite formation and side reactions for improved energy storage.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Aqueous zinc metal batteries face challenges with energy density and cycle life due to unstable Zn/electrolyte interfaces.
- Uncontrolled dendrite formation and side reactions at the interface limit battery performance.
Purpose of the Study:
- To design and investigate an anisotropic crystalline polymer interphase for stabilizing the Zn/electrolyte interface.
- To optimize ion transport and electrochemical performance by tuning polymer chain crystallinity.
Main Methods:
- Fabrication of a hierarchical polymer interphase with controlled crystallinity.
- Characterization of the polymer interphase's structure and ion transport properties.
- Testing of symmetric zinc cells and Zn/AC hybrid ion supercapacitors.
Main Results:
- Anisotropic polymer interphase with preferred nanocrystal orientation enhances Zn2+ kinetics and reversibility.
- Optimal crystallinity balances H2O blocking and Zn2+ transport, improving electrode protection.
- Symmetric cells achieved >3000 h lifespan; supercapacitors exceeded 10,000 cycles.
Conclusions:
- The study demonstrates ordering-dependent ion transport in solid-state polymer interphases.
- The developed interphase offers a viable strategy for advancing grid-scale aqueous batteries.
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