Bifunctional high-strength and anti-shuttling separator based on negatively-charged-cellulose-nanofibers for high-energy and stable flexible Zn-I2 batteries
Hong Qu, Wei Guo, Wenjing Li, Lianyi Shao, Yiyu Chen, Sulian Su, Lifeng Hang, Guihua Jiang
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引用次数: 0
Abstract
The flexible aqueous zinc-iodine batteries (FZIBs) show promise for wearable electronics, but the polyiodide shuttling effect limits iodine loading. Here, we develop a high-strength and negatively charged separator based on bio-sustainable and low-cost carboxylated cellulose nanofibers (c-CNFs) to obtain high-performed FZIBs. The negatively charged COO− groups on the c-CNFs can repel the shuttling of iodine species and simultaneously enable a robust mechanical strength based on strong hydrogen bonding, allowing for shuttling-free high-loading FZIBs with improved energy and stability. Our research demonstrated the cellulose-based separator to enable FZIBs as a high-energy and stable flexible power supply.
期刊介绍：
Applied Surface Science covers topics contributing to a better understanding of surfaces, interfaces, nanostructures and their applications. The journal is concerned with scientific research on the atomic and molecular level of material properties determined with specific surface analytical techniques and/or computational methods, as well as the processing of such structures.
COO− groups on the c-CNFs can repel the shuttling of iodine species and simultaneously enable a robust mechanical strength based on strong hydrogen bonding, allowing for shuttling-free high-loading FZIBs with improved energy and stability. Our research demonstrated the cellulose-based separator to enable FZIBs as a high-energy and stable flexible power supply. 
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