Citation: Yi Sun, Yong-Yuan Ren, Qi Li, Rong-Wei Shi, Yin Hu, Jiang-Na Guo, Zhe Sun, Feng Yan. Conductive, Stretchable, and Self-healing Ionic Gel Based on Dynamic Covalent Bonds and Electrostatic Interaction[J]. Chinese Journal of Polymer Science, ;2019, 37(11): 1053-1059. doi: 10.1007/s10118-019-2325-x shu

Conductive, Stretchable, and Self-healing Ionic Gel Based on Dynamic Covalent Bonds and Electrostatic Interaction

Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China

Corresponding author: Feng Yan, fyan@suda.edu.cn
Received Date: 28 May 2019
Revised Date: 25 June 2019
Accepted Date: 26 June 2019
Available Online: 12 September 2019

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.
- Ionic gel,
- Conductivity,
- Self-healing,
- Dynamic covalent bonds,
- Lithium-sulfur battery
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