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Published on: September 29, 2020
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Redox-active polymer/graphene composite anode for advanced aqueous zinc-ion batteries
Feiyan Ma1, Jiamin Yu1, Yuxin Pu1
1School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China. shaohuili@zzu.edu.cn.
Chemical Communications (Cambridge, England)
|July 29, 2025
Summary
Graphene-wrapped poly(1,4,5,8-naphthalenetetracarboxylic sulfonyl)imine (PNSI/EG) shows promise as a redox-active anode for aqueous zinc-ion batteries (AZIBs). This material enables high energy density in zinc-metal-free AZIBs.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Aqueous zinc-ion batteries (AZIBs) are a promising sustainable energy storage technology.
- Developing high-performance anode materials is crucial for advancing AZIBs.
- Graphene and imine-based polymers offer unique electrochemical properties.
Purpose of the Study:
- To investigate graphene-wrapped poly(1,4,5,8-naphthalenetetracarboxylic sulfonyl)imine (PNSI/EG) as a novel anode material for AZIBs.
- To evaluate the electrochemical performance and stability of PNSI/EG in aqueous electrolytes.
- To demonstrate the potential of PNSI/EG in constructing high-energy-density, zinc-metal-free AZIBs.
Main Methods:
- Synthesis of graphene-wrapped poly(1,4,5,8-naphthalenetetracarboxylic sulfonyl)imine (PNSI/EG).
- Electrochemical characterization of PNSI/EG as an anode material in AZIBs.
- Assembly and testing of zinc-metal-free AZIBs utilizing the PNSI/EG anode.
Main Results:
- PNSI/EG exhibited a reversible and stable capacity of 173.3 mAh g-1 at a current density of 0.1 A g-1.
- The developed zinc-metal-free AZIB demonstrated a high energy density of 50.1 Wh kg-1.
- The material showed excellent cycling stability, indicating its potential for practical applications.
Conclusions:
- Graphene-wrapped PNSI/EG is a highly effective redox-active anode material for AZIBs.
- The developed PNSI/EG-based zinc-metal-free AZIB offers competitive energy density and stability.
- This research paves the way for next-generation, safer, and more sustainable aqueous energy storage systems.
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