摄影交联聚氨含凝聚合物电解质通过自由基聚合法电解质
Fatmanur Uyumaz1, Yerkezhan Yerkinbekova2, Sandugash Kalybekkyzy2,3
1Department of Chemistry, Faculty of Science, Marmara University, Istanbul 34722, Turkey.
Polymers
|September 28, 2024
概括
新型交联凝聚合物电解质 (GPEs) 为离子电池提供了增强的离子导电性和稳定性. 这些先进的GPE证明了卓越的性能和安全性,为下一代灵活的储能系统铺平了道路.
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
- 聚合物科学 聚合物科学
背景情况:
- 开发先进的电解质对于提高离子电池性能和安全至关重要.
- 当前的电解质面临着稳定性,离子导电性和电解质泄漏方面的挑战.
- 凝聚合物电解质 (GPEs) 为更安全,更有效的储能提供了一个有前途的替代方案.
研究的目的:
- 为离子电池应用合成新型交联凝聚合物电解质 (GPEs).
- 研究开发的GPE的结构,电化学和热性能.
- 为了评估GPEs在离子硬币电池中的性能.
主要方法:
- 使用聚氨烯酸盐 (PUA),聚氨甲烯酸盐 (PUMA),乙烯基酸 (VPA) 和bis[2-(methacryloyloxy) ethyl]酸盐 (BMEP) 通过UV启动的自由基聚合制造交联的GPE的制造.
- 离子导电性,电化学稳定性和机械/热性质的表征.
- 使用开发的GPE,组装和测试基于LiFePO4阴极的硬币电池.
主要成果:
- 与商业分离器相比,新的交联GPE表现出明显更高的离子导电性 (1.83 × 10-3 S cm-1).
- GPE表现出极好的机械和热稳定性,减少了电解质泄漏和改善了液体保留.
- 硬币电池显示出高可逆容量 (在0.1°C时为149mA hg-1),接近100%的库伦比克效率,并在循环后保留了91.5%的容量.
- 电化学稳定性观察到高达3.78V.
结论:
- 开发的交联GPE为离子电池提供卓越的离子导电性,增强的稳定性和改进的安全功能.
- 独特的交联结构有效地管理电解质保留并减少泄漏.
- 这些GPE显示出开发高性能和安全的灵活储能系统的巨大潜力.
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