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通过创新的Cu-MOF/碳布离子缓冲层稳定Zn金属阳极

Yuhan Fu¹, Yali Li¹, Yang Chen¹

¹LONGi Institute of Future Technology, and School of Materials & Energy, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, China.

ACS applied materials & interfaces

|July 21, 2025

概括

金属有机框架 (MOF) 通过防止树的生长来改善水性离子电池. 一个新的Cu-MOF在碳布 (CM-C) 层上显著提高了循环稳定性和电池性能.

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) 面临着像树岩形成和副作用等挑战,这限制了它们的性能.
金属有机框架 (MOFs) 提供了潜在的解决方案,因为它们的多孔结构,大表面积和可调节的活性点来调节离子流量.
开发有效的阳极策略对于推进AZIB技术至关重要.

研究的目的:

在碳布 (CM-C) 上在现场合成Cu-MOF,作为AZIBs的离子缓冲层.
研究CM-C层对沉积,副作用和电池整体性能的影响.
为了提高水性离子电池的循环稳定性和容量.

主要方法:

铜基金属有机框架 (Cu-MOF) 在碳布基板 (CM-C) 上的现场合成.
使用CM-C材料作为离子缓冲层制造AZIB.
电化学测试,包括在各种电流密度下进行静电循环和长期稳定性评估.

主要成果:

CM-C 层有效调节了 Zn2+ 流量,促进了均的 Zn 沉积,并抑制了树岩的形成.
具有CM-C层的电池表现出延长周期寿命:在10.0 mA cm-2下近800小时,在5.0 mA cm-2下近1200小时.
观察到异常的循环稳定性,在2000个循环后,Coulombic的平均效率为99.3%,在5.0mA cm-2.0时.
采用CM-C的全电池表现出更好的容量和更高的运行稳定性.

结论:

在碳布 (CM-C) 上在现场合成的Cu-MOF在水性离子电池中起到有效的离子缓冲层的作用.
这一策略显著缓解了与阳极相关的问题,从而显著改善了循环寿命和库伦比克效率.
CM-C配置为开发高性能和稳定的离子电池提供了一种简单而又新的方法.

关键词:

-MOFF是一种-MOF.Zn金属阳极是一种金属阳极.水性离子电池水性离子电池碳纤维布碳纤维布碳纤维布离子缓冲层是一种离子缓冲层.

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