The synthesis and electrochemical performance of Cu6Sn5 intermetallic nanoparticles as anode material in Li ion batteries

The synthesis and electrochemical performance of Cu6Sn5 intermetallic nanoparticles as anode material in Li ion batteries
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锂离子电池负极材料Cu6Sn5纳米金属间化合物的合成及电化学性能

DOI:
10.3139/146.111398
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发表时间:
2016-08
影响因子:
0.8
通讯作者:
Zhi Zheng
Zhi Zheng
中科院分区:
材料科学4区
文献类型:
--
作者:
Congxu Zhu;Jing Li;Fusheng Liu;Zhi Zheng

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摘要采用简单还原法制备了Cu6Sn5金属间纳米颗粒。利用x射线衍射和扫描电镜对合成产物的结晶度和形貌进行了表征。Cu6Sn5纳米颗粒作为阳极材料,在0.05 ~ 2.5 V电流密度为100 mA·g−1、循环70次后,初始放电容量为3368.2 mAh·g−1,稳定放电容量为840 mAh·g−1。采用循环伏安法对Cu6Sn5金属间纳米颗粒的充放电过程进行了评价。结果表明Cu6Sn5金属间纳米颗粒可能是一种理想的锂离子电池负极材料。
Abstract Cu6Sn5 intermetallic nanoparticles have been successfully prepared by a simple reduction method. The crystallinity and morphology of the synthesized products were characterized by means of X-ray diffraction and scanning electron microscopy, respectively. When used as anode material, Cu6Sn5 intermetallic nanoparticles demonstrated an initial discharge capacity of 3368.2 mAh · g−1 and stable capacities of 840 mAh · g−1 after 70 cycles between 0.05 and 2.5 V at a current density of 100 mA · g−1. The charge–discharge process of Cu6Sn5 intermetallic nanoparticles was also evaluated using cyclic voltammetry. The results indicated Cu6Sn5 intermetallic nanoparticles may be an ideal anode material for Li ion batteries.
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