植入到/植入到简斯植入共聚合物的合成用于瓶刷聚合物电解质
Shaoqiao Li1, Kairui Guo1, Zhigang Xue1
1Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China.
雅努斯移植共聚合物,具有聚乙烯甘醇和聚烯侧链,为电池电解质提供增强的离子导电性和机械强度. 这些新型聚合物电解质比传统的区块共聚合物表现出更好的性能.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 电化学 电化学 电化学
背景情况:
- 雅努斯移植共聚合物,结合了块和移植特征,在电池中报告的应用有限.
- 现有的聚合物电解质经常面临离子导电性和机械/热稳定性之间的权衡.
研究的目的:
- 为了合成和表征先进电池电解质的Janus移植共聚合物.
- 调查斯移植结构对离子导电性和机械性能的影响.
主要方法:
- 使用可逆添加碎片链转移 (RAFT) 聚合和原子转移基聚合 (ATRP) 合成雅努斯移植共聚合物 (PEG-J-PS).
- 用盐对共聚合物进行注,以形成聚合物电解质.
- 评价离子导电性,拉力应力和拉力应变.
主要成果:
- 合成的Janus移植聚合物电解质 (PEG-J-PS) 从PEG侧链表现出良好的离子导电特性,并从PS侧链表现出增强的机械/热稳定性.
- 与传统的块共聚合物电解质相比,PEG-J-PS显示出改善的聚合物链段运动性.
- PEG-J-PS在30°C时表现出2.06 × 10−5 S cm−1的显著离子导电率和高机械性能 (2.39 MPa拉伸应力,143%的拉伸应变).
结论:
- 雅努斯移植共聚合物为开发用于电池的高性能聚合物电解质提供了一个有前途的架构.
- 独特的Janus结构有效平衡离子运输和机械完整性,克服了传统聚合物电解质的局限性.
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