In-situ construction of a hybrid interfacial protective layer for highly stable Li metal anodes

被引:1
|
作者
Jiang, Shunqiong [1 ,2 ]
Lieu, Wei Ying [2 ,3 ]
Li, Xue Liang [2 ]
Fang, Daliang [2 ]
Teo, Siew Lang [3 ]
Li, Yifan [2 ]
Seh, Zhi Wei [3 ]
Tian, Bingbing [1 ]
Shi, Yumeng [1 ,4 ]
Yang, Hui Ying [2 ]
机构
[1] Shenzhen Univ, Inst Microscale Optoelect, Int Collaborat Lab 2D Mat Optoelect Sci & Technol, Minist Educ, Shenzhen 518060, Peoples R China
[2] Singapore Univ Technol & Design, Pillar Engn Prod Dev, 8 Somapah Rd, Singapore 487372, Singapore
[3] ASTAR, Inst Mat Res & Engn IMRE, 2 Fusionopolis Way,Innovis 08-03, Singapore 138634, Singapore
[4] Shenzhen Univ, Coll Elect & Informat Engn, Shenzhen 518060, Peoples R China
基金
中国国家自然科学基金;
关键词
Li metal anode; Organic-inorganic composite; Protective layer; Interfacial structure; Li metal batteries; LITHIUM-METAL; BATTERIES; SAFE;
D O I
10.1016/j.mtener.2023.101444
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 (Li) metal is an ideal anode candidate for rechargeable batteries because of its ultra-high theoretical specific capacity. Unfortunately, the practical application of Li metal anodes (LMA) is severely limited by the uncontrollable formation and growth of dendrites and volume expansion. Thus, a protective layer is essential for stable and high-performance LMA. In this work, an organic-inorganic hybrid protective layer is in-situ prepared on Li foil surface (pa-Li), consisting of the organic Polyvinylidene fluoride-hexafluoropropylene (PVDF-HFP) and inorganic Ag-LixAgy composites. Going beyond conventional protective layers, the hybrid protective layer is flexible and enables strong interfacial adherence due to an alloying process. Furthermore, owing to the protective layer's outstanding lithiophilicity and mechanical stability, the pa-Lilipa-Li symmetric cell exhibits satisfactory stability for 1000 h at 5 mA/cm(2), 5 mA h/cm(2) with a low voltage hysteresis of similar to 70 mV, while the full cell with a LiFePO4 cathode delivers an excellent reversible capacity of 128.9 mA h/g for 900 cycles at 2C with a capacity decay rate of 0.009 % per cycle. (c) 2023 Elsevier Ltd. All rights reserved
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页数:9
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