AgP2/C as an anode for high rate performance lithium-ion batteries
By Zhang, Miao; Hu, Renzong; Liu, Jiangwen; Ouyang, Liuzhang; liu, Jun; Yang, Lichun; Fang, Fang; Zhu, Min
Published in Journal of Alloys and Compounds
2018
Abstract
Red phosphorus attracts significant interest for lithium-ion batteries due to its high theoretical capacity. Nevertheless, its low electronic conductivity and drastic volume change during cycling limit its further applications. In this study, we fabricate a novel AgP2/C nanocomposite by facile ball milling. The nanocomposite anode delivers a high reversible capacity of 785 mA h g?1 at 0.5 A g?1 after 100 cycles and an excellent rate capability with a reversible capacity of 605 mA h g?1 at10 A g?1 in half cells. This excellent electrochemical performance is attributed to the uniform dispersion of amorphous carbon and the synergistic effect of intermediate discharge/charge products. In addition, the LiCoO2?AgP2/C full cell exhibits a stable capacity with an operation potential of ?2.8 V, indicating the commercial potential of this material in high rate lithium-ion batteries.
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