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Anionically-reinforced nanocellulose separator enables dual suppression of zinc dendrites and polyiodide shuttle for long-cycle Zn-I2 batteries

11.16.25 | Shanghai Jiao Tong University Journal Center

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Anionically-Reinforced Nanocellulose Separator Enables Dual Suppression of Zinc Dendrites and Polyiodide Shuttle for Long-Cycle Zn-I2 Batteries
Straw-derived carboxylated nanocellulose separator is modified by anionic polyacrylamide to further enhance the negative charge density.The separator exhibits ultrathin profile and exceptional mechanical strength, as well as enabling rapid zinc ion transport.The separator can not only effectively inhibit zinc dendrites and parasitic reactions but also significantly suppress polyiodide shuttle via electrostatic repulsion, contributing to remarkable performance of Zn-I2batteries even under high ma Credit: Wenhui Liu, Hong Ma, Lingli Zhao, Weiwei Qian, Bo Liu, Jizhang Chen*, Yagang Yao*.

As demand grows for safe and sustainable energy storage, zinc–iodine (Zn–I 2 ) batteries have emerged as a promising candidate due to their fast kinetics and low cost. However, zinc dendrite growth and polyiodide shuttle effects remain major barriers to long-term stability. Now, researchers from Nanjing Forestry University and Nanjing University, led by Prof. Jizhang Chen and Prof. Yagang Yao, have developed a straw-derived, anionically reinforced nanocellulose separator that effectively addresses both challenges.

Why This Separator Matters

Innovative Design and Features

Applications and Performance

Conclusion and Outlook

This work presents a multifunctional, biomass-derived separator that tackles both anode and cathode challenges in Zn–I₂ batteries.

Nano-Micro Letters

10.1007/s40820-025-01921-y

Experimental study

Anionically Reinforced Nanocellulose Separator Enables Dual Suppression of Zinc Dendrites and Polyiodide Shuttle for Long Cycle Zn I2 Batteries

5-Sep-2025

Keywords

Batteries

Article Information

Journal
Nano-Micro Letters
DOI
10.1007/s40820-025-01921-y
Method of Research
Experimental study
Article Publication Date
2025-09-05
Article Title
AnionicallyReinforced Nanocellulose Separator Enables Dual Suppression of Zinc Dendrites and Polyiodide Shuttle for LongCycle ZnI2 Batteries

Contact Information

Bowen Li
Shanghai Jiao Tong University Journal Center
qkzx@sjtu.edu.cn

Source

Original Source
https://link.springer.com/article/10.1007/s40820-025-01921-y

How to Cite This Article

APA:
Shanghai Jiao Tong University Journal Center. (2025, November 16). Anionically-reinforced nanocellulose separator enables dual suppression of zinc dendrites and polyiodide shuttle for long-cycle Zn-I2 batteries. Brightsurf News. https://www.brightsurf.com/news/1GRMXD58/anionically-reinforced-nanocellulose-separator-enables-dual-suppression-ofzinc-dendrites-andpolyiodide-shuttle-forlong-cycle-zn-i2-batteries.html
MLA:
"Anionically-reinforced nanocellulose separator enables dual suppression of zinc dendrites and polyiodide shuttle for long-cycle Zn-I2 batteries." Brightsurf News, Nov. 16 2025, https://www.brightsurf.com/news/1GRMXD58/anionically-reinforced-nanocellulose-separator-enables-dual-suppression-ofzinc-dendrites-andpolyiodide-shuttle-forlong-cycle-zn-i2-batteries.html.