https://scholars.lib.ntu.edu.tw/handle/123456789/641595
標題: | Multiple protective layers for suppressing Li dendrite growth and improving the cycle life of anode-free lithium metal batteries | 作者: | Merso, Semaw Kebede Tekaligne, Teshager Mekonnen Adigo Weret, Misganaw Shitaw, Kassie Nigus Nikodimos, Yosef Yang, Sheng Chiang Muche, Zabish Bilew Taklu, Bereket Woldegbreal Hotasi, Boas Tua Chang, Chia Yu Jiang, Shi Kai Brunklaus, Gunther Winter, Martin Wu, She Huang Su, Wei Nien CHUNG-YUAN MOU Hwang, Bing Joe |
關鍵字: | Anode-free Li metal battery | Li-Sr/Li-Sn composite alloys | Protective layers | SrF /PVDF-HFP 2 | Uniform deposition | 公開日期: | 1-四月-2024 | 卷: | 485 | 來源出版物: | Chemical Engineering Journal | 摘要: | Anode-free lithium metal batteries (AFLMBs) have sparked considerable attention in recent years because of their potential for high energy density; however, they suffer from severe Li dendrite growth and unstable solid electrolyte interphase (SEI), which typically result in rapid capacity decay. Herein, we demonstrate a long-life anode-free pouch cell by designing a dual-coating protective layer (Cu-Sn@SFPH) electrode with Sn-coated Cu (denoted as Cu-Sn) as the bottom layer and SrF2 nanoparticles strengthened by poly (vinylidene fluoride)-co-hexafluoropropylene (PVDF-HFP) as the top layer. The in-situ formed LiF-rich SEI enables fast Li+ transfer, while the lithiophilic Li-Sn and Li-Sr alloy layers serve as nucleation seeds for uniform Li deposition. The dual-coated Cu electrode in the Cu-Sn@SFPH||Li cell exhibits remarkable cycling stability for more than 3,200 h at a capacity of 2 mAh cm−2. The NCM111||Cu-Sn@SFPH pouch cell demonstrates outstanding performance with a capacity retention of 72.1 % and an average Coulombic efficiency (CE) of 99.9 % for 120 cycles. Under practical conditions, with NCM cathodes and a lean electrolyte volume, this design strategy opens a new approach to AFLMBs. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/641595 | ISSN: | 13858947 | DOI: | 10.1016/j.cej.2024.149547 |
顯示於: | 化學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。