一种无粘合剂的金属有机框架离子透膜,用于稳定 Zn 阳极
Lvgen Shen1, Cheng Wang1, Xinyi Du1
1State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, Nanjing 210023, China.
ACS applied materials & interfaces
|June 4, 2025
概括
一种基于的新型金属有机框架膜,NUS-8,作为水性离子电池中阳极的人工固体电解质介相. 这种材料有效地抑制了树的生长,并提高了电池的寿命和稳定性.
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
- 储能 储能 储能 储能 储能 储能
背景情况:
- 水性离子电池 (AZIB) 是一种低成本,安全的替代传统电池.
- 关键的挑战包括树突的形成和阳极上的寄生性副作用反应,限制了电池的性能和寿命.
研究的目的:
- 开发一种无粘合剂的基于的金属有机框架 (MOF) 膜,NUS-8,作为阳极的人工固体电解质介面 (ASEI).
- 调节Zn2+的溶解和沉积,抑制树突的生长,并减轻AZIBs中的阳极性副作用.
主要方法:
- 制造一个无粘合剂的NUS-8 MOF膜.
- 描述NUS-8膜的结构和特性 (微孔,功能组).
- 对称Zn电池和Zngadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgadgad
主要成果:
- NUS-8膜通过离子限制效应有效控制离子流量,降低离子转移阻力.
- NUS-8增强了阳极表面的水友性,加速了Zn2+溶解,并降低了迁移激活能量.
- 使用NUS-8@Zn阳极的对称电池实现了超过1180小时的寿命,性能优于裸体Zn阳极 (90小时).
- 完整细胞在3000个循环中表现出72.3%的容量保留在5A g-1.
结论:
- NUS-8 MOF 膜作为有效的 ASEI,显著提高了 AZIB 中的 Zn 阳极性能.
- 这一战略为促进水性离子电池的稳定性和寿命提供了一个有希望的方法.
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