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微合金元素 (Mg,Ag,Al,Zn和Sn) 对金的生长和稳定性在金属阳极的影响

Ruijun Yao¹, Zhuoyu Li², Longke Bao¹

¹College of Materials Science and Engineering, Institute of Materials Genome and Big Data, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China.

ACS applied materials & interfaces

|May 1, 2025

概括

使用Mg和Zn微合金阳极有效抑制树的生长,显著提高金属电池 (LMB) 的寿命. 这项研究阐明了先进的合金中树抑制背后的机制.

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:

金属电池 (LMB) 对于下一代能源存储至关重要.
(Li) 合金阳极显示出商业前景,但面临着状物生长带来的挑战.
了解合金中的树抑制机制至关重要.

研究的目的:

调查微合金元素 (Mg,Ag,Al,Zn,Sn) 对金属阳极中树生长和稳定性的影响.
阐明微合金影响树抑制和电池性能的机制.
为LMBs设计先进的合金材料提供理论见解.

主要方法:

微合金Li40M@Cu (M = Mg,Ag,Al,Zn,Sn) 复合阳极的制备,使用融制方法.
周期稳定性和涂/剥离行为的比较分析.
对Li+扩散系数,固体电解质相间阻抗 (SEI) 和交换电流密度的研究.

主要成果:

微合金有效地抑制了Li树突的生长,并提高了LMB的寿命.
与Li-Ag,Li-Al和Li-Sn合金相比,Li-Mg和Li-Zn合金表现出优越的性能.
提高的性能归因于更高的Li+扩散系数,降低SEI阻抗,增加交换电流密度,稳定的脱,以及改善的湿透性.

结论:

微合金是一种可行的策略,可以提高金属阳极的稳定性和寿命.
-Mg和-Zn合金为先进的LMB应用提供了有前途的特性.
这项研究为开发下一代合金材料用于高性能电池提供了重要的理论理解.

关键词:

合金阳极是一种合金阳极.二二二二二二二二微合金制成的微合金.稳定的稳定性稳定的稳定性抑制效应的抑制效应

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