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Conductive, Stretchable, and Self-healing Ionic Gel Based on Dynamic Covalent Bonds and Electrostatic Interaction
Chinese Journal of Polymer Science ( IF 4.3 ) Pub Date : 2019-09-12 , DOI: 10.1007/s10118-019-2325-x
Yi Sun , Yong-Yuan Ren , Qi Li , Rong-Wei Shi , Yin Hu , Jiang-Na Guo , Zhe Sun , Feng Yan

Integrating multiple functions into one gel that can be widely applied to electronic devices as well as chemical and biomedical engineering remains a big challenge. Here, a multifunctional ionic liquid/dynamic covalent bonds (ionic/DCB) type gel was designed and synthesized via one-pot polymerization. With the assistance of electrostatic interaction provided by the imidazolium cations of IL and the reversible DCB of boronic ester, as-prepared ionic/DCB gel showed good stretchable properties and high ionic conductivity at ambient conditions. In addition, the electrostatic interaction between imidazolium cations and sulfonate anions and the reversible DCB led to enhanced chain mobility and thereby excellent self-healing properties. Particularly, sulfonate anions in ionic/DCB gel could alleviate the migration of electronegative polysulfide and promote the transportation of electropositive lithium ion in lithium-sulfur battery system. Therefore, this work provides a new insight to promote the current research on self-healing gels, hopefully expanding their applications in electronic devices.



中文翻译:

基于动态共价键和静电相互作用的导电,可拉伸和自修复离子凝胶

将多种功能整合到一种凝胶中,可广泛应用于电子设备以及化学和生物医学工程,这仍然是一个巨大的挑战。在这里,设计了一种多功能的离子液体/动态共价键(离子/ DCB)型凝胶,并通过一锅聚合。借助IL的咪唑鎓阳离子和硼酸酯的可逆DCB提供的静电相互作用,制备的离子/ DCB凝胶在环境条件下显示出良好的可拉伸性能和高离子电导率。另外,咪唑鎓阳离子和磺酸根阴离子与可逆DCB之间的静电相互作用导致链迁移率增强,从而具有出色的自愈性能。尤其是,离子/ DCB凝胶中的磺酸根阴离子可以减轻负电多硫化物的迁移,并促进锂硫电池系统中正电锂离子的迁移。因此,这项工作为促进当前对自愈凝胶的研究提供了新的见识,有望扩大其在电子设备中的应用。

更新日期:2019-09-12
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