基于氨的塑料晶体作为和电池的固态电解质
Manuel Salado1,2,3, Thomas H Smith3, Nanditha Sirigiri3
1BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain.
JACS Au
|May 2, 2025
概括
用和盐添加有机离子塑料晶体显示出高离子导电性和扩散性,为先进的和离子电池提供更安全的固态电解质.
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
- 固态化学 固态化学
背景情况:
- 有机离子塑料晶体 (OIPC) 是由有机和无机离子组成的先进固体材料.
- OIPCs被研究为离子和离子电池中液态电解质的更安全替代品.
- 目前的研究缺乏真正的固态行为在OIPCs与离合离子运输的显著演示.
研究的目的:
- 合成和描述基于OIPCs的新型固态电解质,以增强电化学能量储存.
- 为了研究与和盐合的OIPC的离子导电性,扩散性质和转移数.
- 评估这些OIPC作为和对称电池中的固态电解质的性能.
主要方法:
- 将和盐纳入四甲基 bis (((硫) 胺 ([N1111][FSI]) 中.
- 在高温下测量离子导电性,扩散系数和转移数.
- 对称的LiLi和NaNa电池的测试,以评估电流密度和循环稳定性.
主要成果:
- 获得的高离子导电率:在80°C时,在LiFSI合的OIPC中为1.79 mS·cm-1和在NaFSI合的OIPC中为3.2 mS·cm-1.
- 对80°C的Li+观察到高达3.83 × 10−11 m2·s−1的高扩散系数.
- 在室温下证明了高转移数 (0.8为Li+,0.4为Na+) 和令人印象深刻的电流密度 (高达3.5mA·cm−2为Li,2.9mA·cm−2为Na).
结论:
- 开发的OIPC对固态电解质表现出有希望的特性,包括高离子导电性和扩散性.
- 这些材料显示了使真正的固态离子运输能够脱离宿主结构运动的潜力.
- OIPC为提高和电化学储能技术的效率和安全性提供了可行的途径.
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