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Template-Free Synthesis of Sb2S3 Hollow Microspheres as Anode Materials for Lithium-Ion and Sodium-Ion Batteries
Nano-Micro Letters ( IF 26.6 ) Pub Date : 2017-09-28 , DOI: 10.1007/s40820-017-0165-1
Jianjun Xie , Li Liu , Jing Xia , Yue Zhang , Min Li , Yan Ouyang , Su Nie , Xianyou Wang

Hierarchical Sb2S3 hollow microspheres assembled by nanowires have been successfully synthesized by a simple and practical hydrothermal reaction. The possible formation process of this architecture was investigated by X-ray diffraction (XRD), focused-ion beam-scanning electron microscopy dual-beam system (FIB-SEM), and transmission electron microscopy (TEM). When used as the anode material for lithium-ion batteries, Sb2S3 hollow microspheres manifest excellent rate property and enhanced lithium-storage capability, and can deliver a discharge capacity of 674 mAh g-1 at a current density of 200 mA g-1 after 50 cycles. Even at a high current density of 5000 mA g-1, a discharge capacity of 541 mAh g-1 is achieved. Sb2S3 hollow microspheres also display a prominent sodium-storage capacity, and maintain a reversible discharge capacity of 384 mAh g-1 at a current density of 200 mA g-1 after 50 cycles. The remarkable lithium/sodium-storage property may be attributed to the synergetic effect of its nanometer size and three-dimensional hierarchical architecture, and the outstanding stability property is attributed to the sufficient interior void space, which can buffer the volume expansion.



中文翻译:

Sb2S3空心微球的无模板合成作为锂离子和钠离子电池的负极材料

通过简单实用的水热反应,成功地合成了由纳米线组装而成的Sb 2 S 3空心空心微球。通过X射线衍射(XRD),聚焦离子束扫描电子显微镜双光束系统(FIB-SEM)和透射电子显微镜(TEM)研究了该体系结构的可能形成过程。当用作锂离子电池的负极材料时,Sb 2 S 3中空微球表现出优异的倍率性能和增强的锂储存能力,并且在200 mA g-的电流密度下可以提供674 mAh g -1的放电容量- 50个循环后为1。即使在5000 mA g -1的高电流密度下,实现了541 mAh g -1的放电容量。Sb 2 S 3中空微球还显示出显着的钠存储容量,并在50次循环后在200 mA g -1的电流密度下保持384 mAh g -1的可逆放电容量。出色的锂/钠存储性能可能归因于其纳米尺寸和三维层次结构的协同效应,而出色的稳定性归因于足够的内部空隙空间,可以缓冲体积膨胀。

更新日期:2017-11-09
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