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

IF 36.3 1区材料科学 Q1 Engineering

Nano-Micro Letters Pub Date : 2025-09-05 DOI:10.1007/s40820-025-01921-y

Wenhui Liu, Hong Ma, Lingli Zhao, Weiwei Qian, Bo Liu, Jizhang Chen, Yagang Yao

引用次数: 0

Abstract

Highlights

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-I₂ batteries even under high mass loadings.

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阴离子增强纳米纤维素分离器实现长周期锌- i2电池锌枝晶和多碘化物穿梭的双重抑制

利用阴离子聚丙烯酰胺对秸秆基羧化纳米纤维素分离器进行改性，进一步提高了其负电荷密度。该分离器具有超薄的外形和卓越的机械强度，以及实现锌离子的快速输送。该隔膜不仅能有效抑制锌枝晶和寄生反应，还能通过静电斥力抑制多碘离子穿梭，使锌- i2电池在高质量负载下仍能保持优异的性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nano-Micro Letters NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

32.60

自引率

4.90%

发文量

981

审稿时长

1.1 months

期刊介绍： Nano-Micro Letters is a peer-reviewed, international, interdisciplinary, and open-access journal published under the SpringerOpen brand. Nano-Micro Letters focuses on the science, experiments, engineering, technologies, and applications of nano- or microscale structures and systems in various fields such as physics, chemistry, biology, material science, and pharmacy.It also explores the expanding interfaces between these fields. Nano-Micro Letters particularly emphasizes the bottom-up approach in the length scale from nano to micro. This approach is crucial for achieving industrial applications in nanotechnology, as it involves the assembly, modification, and control of nanostructures on a microscale.