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具有自乳化特性的水性结合剂,用于离子电池中的实用Si/C阳极

Wenqiang Wang¹, Xvfeng Li¹, Xiaofeng Chen¹

¹Shanghai Engineering Research Center of Hierarchical Nanomaterials, Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China.

Chemistry (Weinheim an der Bergstrasse, Germany)

|January 10, 2025

概括

一种新型的聚乙醇移植甲酸粘合剂 (PVA-g-M) 增强了离子电池的/碳阳极. 这种粘合剂提高了结构完整性和循环稳定性,解决了电池性能方面的关键挑战.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
聚合物化学聚合物化学

背景情况:

由于的高容量,/碳 (Si/C) 阳极对离子电池具有前景.
然而,Si/C阳极遭受大量体积膨胀和不良循环稳定性.
传统的结合剂在重复循环过程中难以保持Si/C阳极的结构完整性.

研究的目的:

为Si/C阳极开发一种新型的水性粘合剂.
为了提高粘合剂对Si/C材料的凝聚力和粘合力.
为了提高Si/C阳极的结构完整性和循环性能.

主要方法:

通过乳液聚合合成的聚乙烯醇移植甲酸 (PVA-g-M) 的合成.
粘合剂性质的表征,包括结合和湿.
使用PVA-g-M粘合剂对Si/C阳极进行电化学测试.

主要成果:

PVA-g-M粘合剂表现出增强的结合和湿特性.
粘合剂提高了对和碳表面的粘附性.
带有PVA-g-M的Si/C阳极显示出受阻体积膨胀和高结构完整性.
电极循环稳定性得到改善,在300个循环后保持81.1%的容量.

结论:

开发的PVA-g-M粘合剂有效地解决了Si/C阳极常规粘合剂的局限性.
这种粘合剂促进了优越的结构完整性和电化学性能.
PVA-g-M为先进的离子电池阳极提供了一个有前途的解决方案.

关键词:

粘合剂粘合剂粘合剂乳液聚合物的聚合化离子电池是离子电池的使用方式.自行乳化,可以自行乳化./阳极材料是/阳极材料.

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