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高孔径聚胺凝用于与室温离子液体电解质的电池分离器

Rocco P Viggiano¹, James Wu¹, Daniel A Scheiman²

¹NASA Glenn Research Center, 21000 Brookpark Road, Cleveland, OH 44135, USA.

Gels (Basel, Switzerland)

|February 26, 2026

概括

新的聚胺凝分离器可以为先进的基电池提供更安全,不易燃的电解质. 这些分离器与离子液体具有很好的兼容性,这对于航空航天应用中高性能储能至关重要.

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
储能储能储能储能储能储能

背景情况:

先进的航空航天车辆需要增强的能量存储,提高了特定能量和安全性.
目前的离子电池使用易燃的碳酸盐电解质和聚烯分离器,限制了安全性和性能.
室温离子液体 (RTIL) 提供非易燃的替代品,但与传统分离器的兼容性往往很差.

研究的目的:

开发和评估新的聚胺 (PI) 凝分离器,以提高与RTIL电解质的兼容性.
为了创建更安全,不易燃的储能系统,适用于航空航天等苛刻的应用.

主要方法:

合成的交联聚胺 (PI) 凝分离器使用ODA,BPDA和Desmodur N3300A的不同长度 (n=30,60).
具有孔隙性,热稳定性和形态学特征的PI凝分离器.
用LiTFSI选了六个基于伊米达的RTIL,评估PI凝系统中的离子导电性和长期稳定性.

主要成果:

PI凝分离器呈现出高孔度 (>85%),优异的热稳定性 (>561°C) 和稳定的纤维状网络.
非易燃的分离器/电解质系统在10~3S/cm范围内实现了室温离子导电性.
1-乙基-3-甲基利米达二三甲基硫) 胺 (EMIM-TFSI) RTIL显示出最佳性能,在长时间储存后保持良好的导电性.

结论:

交联聚胺凝分离器有效地使无碳酸盐,不可燃的RTIL电解质成为可能.
这些PI凝分离器保持了适合基电池的离子导电性,解决了关键的安全性和性能挑战.
开发的系统显示了先进的储能解决方案在航空航天和其他高需求领域的前景.

关键词:

离子导电性的离子导电性.聚胺聚胺的使用方法聚胺气凝是一种聚胺气凝.聚胺凝分离器分离器在室温的离子液体.

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