Related Experiment Video
Updated: Sep 28, 2025
06:58
Zinc-Sponge Battery Electrodes that Suppress Dendrites
Published on: September 29, 2020
4.5K
High-Efficiency and Stable Zn-Na3 V2 (PO4 )3 Aqueous Battery Enabled by Electrolyte-Induced Interphasial Engineering
Gaoli Guo1, Xiaoping Tan1,2, Kaidi Wang1
1Ningbo Institute of Northwestern Polytechnical University & Institute of Flexible Electronics Northwestern Polytechnical University, Xi'an, 710072, P. R. China.
Chemsuschem
|March 28, 2022
Summary
Stable aqueous zinc batteries are enabled by a new electrolyte that protects sodium superionic conductor (NASICON) cathodes. This innovation enhances cycling efficiency and longevity for safer, sustainable energy storage.
Area of Science:
- Electrochemistry
- Materials Science
Background:
- Aqueous zinc batteries offer high energy, safety, and sustainability.
- NASICON-type materials are promising cathodes but degrade in aqueous electrolytes.
Purpose of the Study:
- To develop a stable electrolyte for NASICON cathodes in aqueous zinc batteries.
- To improve Coulombic efficiency and cycling stability.
Main Methods:
- Designed an aqueous electrolyte with a supporting Na salt and polymer additive.
- Investigated electrolyte's effect on water activity and interfacial reactions.
- Tested Na3V2(PO4)3 cathode with zinc metal anode.
Main Results:
- Electrolyte suppressed water activity via hydrogen bonding.
- Facilitated anion involvement in interfacial reactions for stable operation.
- Achieved high cycling Coulombic efficiencies (~99.9%) and capacity retention over 300 cycles.
Conclusions:
- The designed electrolyte effectively stabilizes NASICON cathodes in aqueous zinc batteries.
- Fundamental interfacial chemistry is key to designing sustainable aqueous electrolytes.
- This approach addresses key limitations for advanced aqueous energy storage.
