Constructing a Li-Zn - Zn lithiophilic layer by a scalable method of magnetron for a Li-B anode

被引：1
作者：
Huang, X. Y. [1 ]
Zhou, H. P. [1 ,2 ]
Jiang, L. Y. [1 ]
Geng, T. X. [1 ]
Xu, Z. Q. [1 ,2 ]
Fang, Z. X. [2 ]
Zhang, S. [1 ]
Feng, T. T. [1 ,2 ]
Wu, M. Q. [1 ,2 ]
机构：
[1] Univ Elect Sci & Technol China, Sch Mat & Energy, Chengdu 611731, Peoples R China
[2] Univ Elect Sci & Technol China, Yangtze Delta Reg Inst Huzhou, Huzhou 313001, Peoples R China
来源：
JOURNAL OF POWER SOURCES | 2024年 / 621卷
关键词：
Li metal anode; Megnetron sputtering; SEI; Li-Zn alloy; Plasma etching; UNIFORM LITHIUM DEPOSITION; METAL ANODE; RECHARGEABLE BATTERIES; ION; CHALLENGES; ENERGY; INTERPHASES;
D O I：
10.1016/j.jpowsour.2024.235268
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Lithium metal anodes offer high theoretical capacity and low redox potential but face challenges like dendritic growth, fragile solid electrolyte interface (SEI), "dead lithium" formation, and volume expansion. Composite anodes or artificial SEIs can address these issues, but often suffer from poor lithiophilicity and mass burdens. This study presents a Li-Zn-B alloy anode combining a Li-Zn lithiophilic layer with a bulk Li-B alloy. The Li-Zn lithiophilic layer, formed by magnetron sputtering of Zinc oxide (ZnO), improves surface lithiophilicity. Symmetrical cells with this alloy cycled stably for 1300 (1 mA cm(-2), 1 mAh cm(-2)) and 550 h (2 mA cm(-2), 2 mAh cm(-2)) with minimal overpotentials. The LiBZn||NCM811 full cell showed a specific discharge capacity of 130.8 mAh/g and stable Coulombic efficiency of 98.9 % after 300 cycles.
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页数：11
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