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乙氧/胺功能化UiO-66-(OH) 2MOF复合分离器,使得水/HF清理和Li+规范稳定金属电池

Jaeseon Lee¹, Minyeong Jeon¹, Seong-Geun Oh¹

¹Department of Chemical Engineering, Hanyang University, Wangshimni-Ro, Seongdong-Gu, Seoul, Republic of Korea.

Small (Weinheim an der Bergstrasse, Germany)

|December 22, 2025

概括

研究人员开发了新型纳米纤维分离器,涂有金属有机框架 (MOFs),用于增强的金属电池. 这些先进的分离器提高了电化学性能,并防止了树的生长,提供了卓越的性能和稳定性.

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
纳米技术纳米技术

背景情况:

金属电池中的商业聚烯烯分离器存在电化学性能差异和树突增长问题.
这些限制阻碍了高能量密度金属电池的安全性和效率.
开发先进的分离器对于克服这些挑战至关重要.

研究的目的:

为金属电池设计一种新型的纳米纤维分离器,涂上基于的金属有机框架 (MOF).
与传统分离器相比,提高电化学性能,机械强度和热稳定性.
研究MOF涂层分离器在提高金属电池安全性和周期寿命方面的潜力.

主要方法:

电技术和真空表面涂层被用于制造纳米纤维分离器.
基于的MOF (UiO-66-(OH) ₂) 通过水热合成合成,并使用ICPTES用乙氧基/胺基进行表面修饰.
修改后的MOF被涂在纳米纤维分离器上,以创建MF-U66I分离器.

主要成果:

MF-U66I分离器表现出高孔隙性 (68.2%),优异的电解质吸收率 (750%) 和优异的机械强度 (27.5N mm2).
观察到异常的尺寸稳定性 (在200°C时<5%的收缩) 和高离子导电性 (σ = 2.85 mS cm-1).
与PE和原始MF分离器相比,使用MF-U66I分离器的金属电池显著提高了容量保留和循环寿命.

结论:

涂有MOF的纳米纤维分离器 (MF-U66I) 有效地抑制了树的生长,并提高了电化学性能.
MF-U66I分离器具有显著的热稳定性和机械完整性,这对于安全的电池运行至关重要.
这种先进的分离器为实用,高性能金属电池提供了一个有希望的替代方案.

关键词:

消除H2O/HF的方法 UiO‐66‐(OH) 2 MOF 的一种物质.电力旋转是指电力旋转.乙氧基/氨基基基组.功能分离器是一个功能分离器.金属电池是金属电池的一种.

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