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Two-dimensional LiTi2(PO4)3 flakes for enhanced lithium ions battery anode
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DOI：10.1016/j.heliyon.2023.e23396.png)
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Abstract
En 中文
In this work, the LiTi2(PO4)3 (LTP) flakes have been prepared by employing a template method for lithium-ion batteries with high capacity. The 2D layered structure of LTP offers large aspect ratio and rich active sites, which not only create the large contact area between the electrolyte and electrode, but also promote the diffusion kinetics of Li+. As a result, the Li+ diffusion coefficient of lamellar LTP anode is 3.12 x 10 8 cm2 s 1, while it is only 5.01 x 10 10 cm2 s 1 for granular LTP anode. Further, the lamellar LTP anode delivers a high initial discharge capacity of 986.8 mAh center dot g 1 at 0.1 A g 1, and remains at 231.1 mAh center dot g 1 after 100 cycles, which is higher than that of the granular LTP anode (340.5 mAh center dot g 1 at 1st cycle, 169.3 mAh center dot g 1 at 100th cycles). Thus, the lamellar LTP should be recommended as a potential anode for high-performance LIBs due to the fast charge-discharge performance and superior cycling stability.
Keywords:
LiTi2(PO4)3
Lithium-ion batteries
Anode
NASICON-Type structure
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