Forcespinning: A new method for the mass production of Sn/C composite nanofiber anodes for lithium ion batteries
Forcespinning: A new method for the mass production of Sn/C composite nanofiber anodes for lithium ion batteries
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DOI：
10.1016/j.ssi.2015.12.020
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发表时间：
2016-03-01
影响因子：
3.2
通讯作者：
Alcoutlabi, Mataz
中科院分区：
文献类型：
--
作者：
Agubra, Victor A.;Zuniga, Luis;Alcoutlabi, Mataz
纳米结构锂离子电池负极材料的开发越来越受到人们的关注。在此，我们报道了一种新的可伸缩技术--强制钉扎(FS)，以制备不同锡颗粒含量的无粘结剂多孔锡/碳复合纳米纤维。该制备过程包括：先制得锡/聚丙烯腈纳米纤维，然后在280℃的空气中稳定下来，然后在800℃的惰性气氛中碳化。锡/碳复合纳米纤维具有很高的柔韧性，可直接用作锂离子电池的无粘结剂负极。在100 mA g(-1)的电流密度下，制备的SnC复合纳米纤维电极在50次以上的循环中放电容量达到724 mA h g(-1)，比大多数电纺和离心法制备的纳米纤维电极的放电容量都要高。由于纳米纤维独特的结构和性质，FS法制备的锡/碳纳米纤维复合电极具有高的比容量和优异的循环性能。因此，FS技术是大规模生产用于电池电极、隔膜和其他应用的纳米/微米纤维的可行方法。据我们所知，这是第一次报道使用Forcespping技术生产锂离子电池复合纳米纤维阳极的结果。(C)2015爱思唯尔B.V.保留所有权利。
The development of nanostructured anode materials for rechargeable Lithium-ion Batteries has seen a growing interest. We herein report the use of a new scalable technique, Forcespinning (FS) to produce binder-free porousSn/C composite nanofibers with different Sn particle size loading. The preparation process involves the FS of Sn/PAN precursor nanofibers and subsequently stabilizing in air at 280 C followed by carbonization at 800 C under an inert atmosphere. The Sn/C composite nanofibers are highly flexible and were directly used as binder-free anodes for lithium-ion batteries. The produced Sn/C composite nanofibers showed an improved discharge capacity of about 724 mA h g(-1) at a current density of 100 mA g(-1) for over 50 cycles compared to most nanofiber electrodes prepared by electrospinning and centrifugal spinning. The FS method clearly produces Sn/C nanofiber composite electrodes that have a high specific capacity and excellent cyclic performance, owing to the unique structure and properties of the nanofibers. The FS technology is thus a viable method for the large scale production of nano/micro fibers for battery electrodes, separators, and other applications. To the best of our knowledge, this is the first time to report results on the use of Forcespinning technology to produce composite nanofiber anodes for lithium-ion batteries. (C) 2015 Elsevier B.V. All rights reserved.