Ultrasmall Sn nanoparticles embedded in N-doped carbon nanospheres as long cycle life anode for lithium ion batteries
Ultrasmall Sn nanoparticles embedded in N-doped carbon nanospheres as long cycle life anode for lithium ion batteries
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DOI：
10.1016/j.matlet.2018.04.043
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发表时间：
2018-07-15
影响因子：
3
通讯作者：
Sun, Yuping
中科院分区：
文献类型：
--
作者：
Liu, Xianguo;Li, Xiaolong;Sun, Yuping
采用改进的电弧放电法一步合成了Sn/N掺杂碳纳米球纳米复合材料，其中平均粒径约为4 nm的超小Sn纳米颗粒分散在约为150 nm的N掺杂碳纳米球中。Sn/N掺杂碳纳米球复合材料作为阳极使用时，1000次循环后上级稳定性为520.4mAh g（1）（0.5Ag（1）），倍率性能为335.1mAh g（1）（4.0Ag（1）），这主要归因于Sn/N掺杂碳纳米球的特殊结构，同时具有超小Sn纳米颗粒、N掺杂和碳纳米球的优点。(C)2018爱思唯尔B. V.保留所有权利。
The novel Sn/N-doped carbon nanospheres nanocomposites, in which ultrasmall Sn nanoparticles with average diameter of similar to 4 nm are dispersed in similar to 150 nm N-doped carbon nanospheres, are one-step constructed by the modified arc discharge method. When used as anode, Sn/N-doped carbon nanospheres nanocomposites deliver the superior cycle stability of 520.4 mAh g (1) at 0.5 A g (1) after 1000 cycles and good rate capability of 335.1 mAh g (1) at 4.0 A g (1), which is mainly ascribed to the special structure with the advantages of ultrasmall Sn nanoparticles, the doping of N and carbon nanospheres. (C) 2018 Elsevier B.V. All rights reserved.