Observation of high ionic conductivity of polyelectrolyte microgels in salt-free solutions

被引：0
|
作者：
Qiangwei Wang [1 ]
Huijiao Liu [1 ]
Mengjie Wang [1 ]
Haojie Zhang [1 ]
Jianda Xie [2 ]
Xuanwei Hu [1 ]
Shiming Zhou [3 ]
Weitai Wu [1 ,4 ]
机构：
[1] State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, The Key Laboratory for Chemical Biology of Fujian Province, and Department of Chemistry, College of Chemistry and Chemical Eng
[2] School of Materials Science and Engineering, Xiamen University of Technology
[3] Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China
[4] School of Chemistry and Chemical Engineering, Ningxia University
来源：
Chinese Chemical Letters | 2024年 / 35卷 / 04期
基金：
中国国家自然科学基金;
关键词：
D O I：
暂无
中图分类号：
TQ427.26 []; TM912 [蓄电池];
学科分类号：
0808 ; 0817 ;
摘要：
Here, we report an observation that illustrate the potential of polyelectrolyte microgels in salt-free solutions to display a high ionic conductivity. Laser light scattering and ionic conductivity tests on very dilute aqueous dispersions of the microgels indicate that both small size and swollen state of gel particles play vital roles, which should favor the counterions to freely penetrate and leave gel particles, and thus can contribute to the ion-conducting property. Upon discovering this on microgels that are composed of imidazolium-based poly(ionic liquid), we also illustrate the generality of the finding to single lithium-ion polyelectrolyte microgels that are of more technically relevant features for applications, for instance, as injectable liquid “microgel-in-solution” electrolytes of high conductivity(ca. 8.2 × 10-2S/m at 25.0 °C for1.0 × 10-2g/m L of microgels in a LiNO3-free 1:1 v/v mixture of 1,2-dioxolane and dimethoxymethane) and high lithium-ion transference number(0.87) for use in the rechargeable lithium-sulfur battery.
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页码：281 / 285
页数：5
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