Related Experiment Video
Updated: May 13, 2026
06:58
Zinc-Sponge Battery Electrodes that Suppress Dendrites
Published on: September 29, 2020
Self-Separating Biphasic Electrolyte Enables High-Performance Aqueous Zinc-Ion Batteries via Electron-Enriched
Chengwu Yang1, Pattaraporn Woottapanit2,3, Qizhi Hou1
1State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, People's Republic of China.
Nano-Micro Letters
|May 12, 2026
Summary
This study introduces a novel self-separating biphasic electrolyte for aqueous zinc-ion batteries, overcoming dendrite formation and interface instability. This advancement significantly enhances battery longevity and performance.
Area of Science:
- Electrochemistry
- Materials Science
- Energy Storage
Background:
- Aqueous zinc-ion batteries face challenges like unstable interfaces and dendrite growth, limiting cycle life and zinc utilization.
- Developing stable and efficient electrolytes is crucial for advancing aqueous zinc-ion battery technology.
Purpose of the Study:
- To develop a self-separating biphasic electrolyte using conductive polymers to enhance the stability and performance of aqueous zinc anodes.
- To investigate the mechanism of electrolyte-electrode interface modification for improved zinc deposition and ion transport.
Main Methods:
- A self-separating biphasic electrolyte was created via phase separation of poly(3,4-ethylenedioxythiophene): poly(styrenesulfonic acid) (PEDOT:PSS) in zinc sulfate solution.
- Mechanical shear-ionic crosslinking was employed to drive the phase separation process.
- The modified electrode interface and ion solvation structures were analyzed to understand performance enhancement.
Main Results:
- The PEDOT:PSS electrolyte formed a robust, electron-rich interphase on the zinc anode, promoting uniform deposition and repelling sulfate ions.
- The electrolyte remodeling of Zn2+ solvation structure enhanced ionic transfer kinetics and desolvation.
- Zinc anodes exhibited exceptional stability at high depths of discharge (68.4% and 94.1%).
Conclusions:
- The self-separating biphasic electrolyte effectively suppresses dendrite formation and enhances interfacial stability in aqueous zinc-ion batteries.
- This approach leads to outstanding cyclability exceeding 10,000 cycles in Zn||V2O5 full cells, demonstrating its potential for practical applications.
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