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Facile Synthesis of Mo2N Quantum Dots embedded N-Doped Carbon Nanosheets Composite as Advanced Anode Materials for Lithium-Ion Batteries
Materials Letters ( IF 2.7 ) Pub Date : 2020-10-01 , DOI: 10.1016/j.matlet.2020.128205
Hong Yi , Yu Huang , Zhoucheng Sha , Xiaohui Zhu , Qiuying Xia , Hui Xia

Abstract Mo2N quantum dots embedded N-doped carbon nanosheets (Mo2N@NC) composite are prepared by a facile one-pot approach and applied as anode material for lithium-ion batteries. In this unique embedded Mo2N@NC heterostructure, the ultrasmall Mo2N nanoparticles possess short paths for Li+ ion diffusion, while the NC can facilitate fast electron transportation, provide plenty of active sites for lithium storage, and buffer the volume change of Mo2N nanoparticles during charge/discharge process. As a result, the Mo2N@NC electrode achieves a large reversible capacity of 826 mAh g−1, good rate capability (378 mAh g−1 at 2 A g−1), and excellent cycling stability (up to 3000 cycles).

中文翻译:

轻松合成 Mo2N 量子点嵌入的 N 掺杂碳纳米片复合材料作为锂离子电池的先进负极材料

摘要 采用简单的一锅法制备了 Mo2N 量子点嵌入 N 掺杂的碳纳米片 (Mo2N@NC) 复合材料,并将其用作锂离子电池的负极材料。在这种独特的嵌入式 Mo2N@NC 异质结构中,超小的 Mo2N 纳米粒子具有短的 Li+ 离子扩散路径,而 NC 可以促进快速电子传输,为锂存储提供大量活性位点,并缓冲充电过程中 Mo2N 纳米粒子的体积变化/放电过程。因此,Mo2N@NC 电极实现了 826 mAh g-1 的大可逆容量、良好的倍率性能(2 A g-1 时为 378 mAh g-1)和优异的循环稳定性(高达 3000 次循环)。
更新日期:2020-10-01
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