通过现场聚合用于离子电池的三甲基醇三甲基乙烯的交联凝聚合物电解质
Lei Jin1, Hyunmin Lim1, Wansu Bae1
1Department of Applied Chemistry, Konkuk University, 268 Chungwon-daero, Chungju-si 27478, Republic of Korea.
Gels (Basel, Switzerland)
|January 22, 2024
概括
研究人员开发了一种新的凝网络聚合物电解质 (GNPE),用于更安全,高性能的离子电池. 这种先进的电解质提供了更好的离子导电性和稳定性,平衡了电池的关键特性.
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
- 聚合物化学 聚合物化学
背景情况:
- 电解质对于电池性能至关重要,但会带来安全风险.
- 平衡电解质的物理和电气性质是一个重大的研究挑战.
- 凝聚合物电解质 (GPEs) 因其导电性,稳定性和安全性而具有前景.
研究的目的:
- 开发一种凝网络聚合物电解质 (GNPE),以应对平衡电解质性质的挑战.
- 为高性能离子电池 (LIB) 创建一个以环氧为基础的电解质.
主要方法:
- 合成的GNPE使用三氧化物单体和二硫胺盐 (LiFSI).
- 在温和的热条件下使用在位离子聚合物.
- 测试了电极与LiFePO4和石墨的兼容性,并评估了电池在室温下的性能.
主要成果:
- 在室温下达到高离子导电性 (2.63 × 10−4 S cm−1) 和转移数 (0.58).
- 在LiFePO4/GNPE/石墨电池中证明了极好的电极兼容性和有前途的循环性能.
- 在100个循环后报告了127mAhg-1的排放特定容量和>97%的库伦比效率.
结论:
- 开发的GNPE具有良好的离子导电性,机械稳定性和安全性.
- 环氧基电解质在LIBs中显示出极好的兼容性和性能.
- 本研究介绍了一种用于制备高性能LIBs的先进电解质的简单方法.
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