Stabilizing Lithium Metal Batteries by Synergistic Effect of High Ionic Transfer Separator and Lithium−Boron Composite Material Anode
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
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Detail(s)
Original language | English |
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Pages (from-to) | 20315-20324 |
Journal / Publication | ACS Nano |
Volume | 17 |
Issue number | 20 |
Online published | 3 Oct 2023 |
Publication status | Published - 24 Oct 2023 |
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Abstract
The development of lithium (Li) metal batteries (LMBs) has been limited by problems, such as severe dendrite growth, drastic interfacial reactions, and large volume change. Herein, an LMB (8AP@LiB) combining agraphene oxide-poly(ethylene oxide) (PEO) functionalized polypropylene separator (8AP) with a lithium-boron (LiB) anode is designed to overcome these problems. Raman results demonstrate that the PEO chain on 8AP can influence the Li+ solvation structure in the electrolyte, resulting in Li+ homogeneous diffusion and Li+ deposition barrier reduction. 8AP exhibits good ionic conductivity (4.9 × 10-4 S cm-1), a high Li+ migration number (0.88), and a significant electrolyte uptake (293%). The 3D LiB skeleton can significantly reduce the anode volume changes and local current density during the charging/discharging process. Therefore, 8AP@LiB effectively regulates the Li+ flux and promotes the uniform Li deposition without dendrites. The Li||Li symmetrical cells of 8AP@LiB exhibit a high electrochemical stability of up to 1000 h at 1 mA cm-2 and 5 mAh cm-2. Importantly, the Li||LiFePO4 full cells of 8AP@LiB achieve an impressive 2000 cycles at 2C, while maintaining a high-capacity retention of 86%. The synergistic effect of the functionalized separator and LiB anode might provide a direction for the development of high-performance LMBs. © 2023 American Chemical Society.
Research Area(s)
- functionalized separator, graphene oxide, high lithium ion transport, lithium boron anode, lithium metal batteries
Citation Format(s)
Stabilizing Lithium Metal Batteries by Synergistic Effect of High Ionic Transfer Separator and Lithium−Boron Composite Material Anode. / Naren, Tuoya; Jiang, Ruheng; Qing, Piao et al.
In: ACS Nano, Vol. 17, No. 20, 24.10.2023, p. 20315-20324.
In: ACS Nano, Vol. 17, No. 20, 24.10.2023, p. 20315-20324.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review