Amorphous High-Entropy Alloy Interphase for Stable Lithium Metal Batteries

Longhong Zheng, Ruixin Lv, Chong Luo*, Yafei Guo, Ming Fan Yang, Kai Kai Hu, Ke Wang, Li Li, Feng Wu, Renjie Chen*

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

1 引用 (Scopus)

摘要

The unstable anode/electrolyte interphase induces severe lithium dendrite growth hindering the practical application of lithium metal batteries. The lithium alloy interphase presents a promising strategy for regulating Li+ plating/stripping behavior. However, binary or ternary alloys are insufficient to address various challenges in lithium metal batteries and the high temperature required for alloy preparation hampers their direct applications on lithium metal surfaces. In this study, a high-entropy alloy (HEA) interphase is developed on lithium metal surfaces via room-temperature magnetron sputtering, showcasing multifunctional advantages in regulating Li+ plating/stripping behavior. The cocktail effect of the (HEA) facilitated the formation of a homogeneous amorphous interphase with abundant lithiophilic sites and magnetic properties, promoting uniform Li+ nucleation and deposition. Furthermore, the high mechanical strength and corrosion resistance of HEA provided physicochemical stability for the lithium anode interphase, consistently suppressing dendrite growth. Consequently, lithium metal anodes with HEA interphases exhibited robust cycling performance lasting over 4000 h at 2 mA cm−2. The LFP full battery demonstrated high-capacity retention of 90% with an average Coulombic efficiency of 99.7%. Thus, the HEA interphases on lithium metal surfaces offer controllable regulation of Li+ deposition behavior through high-entropy manipulation, opening novel strategies for stable lithium metal batteries.

源语言英语
文章编号2402042
期刊Advanced Energy Materials
14
40
DOI
出版状态已出版 - 25 10月 2024

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