Synthesis of ZnSb@C microflower composites and their enhanced electrochemical performance for lithium-ion and sodium-ion batteries

被引:17
|
作者
Fan, Long [1 ]
Liu, Yao [1 ]
Tamirat, Andebet Gedamu [1 ]
Wang, Yonggang [1 ]
Xia, Yongyao [1 ]
机构
[1] Fudan Univ, Dept Chem, Shanghai 200433, Peoples R China
基金
中国国家自然科学基金;
关键词
LI-ION; HIGH-CAPACITY; NANOCOMPOSITE ANODES; AMORPHOUS-CARBON; ENERGY-STORAGE; SB; NANOCRYSTALS; CAPABILITY; ELECTRODES; STABILITY;
D O I
10.1039/c7nj02668d
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
ZnSb@C microflower composites have been fabricated through C2H2-pyrolysis by the reduction of microflower-like Zn(OH)(2)-Sb2O3 precursors. The as-formed ZnSb particles are uniformly dispersed in the synchronously formed continuous amorphous carbon matrix. Meanwhile, the flower-like morphology of the precursors has been maintained after the reducing process. As anodes for Li-ion and Na-ion batteries, the as-prepared ZnSb@C microflower composite anode exhibits a reversible capacity of 480.5 mA h g(-1) at 100 mA g(-1) after 240 cycles for Li-ion batteries and a reversible capacity of 393.4 mA h g(-1) at 50 mA g(-1) after 240 cycles for Na-ion batteries, which are much better than those of the ZnSb-C particle composites. The enhanced electrochemical performance can be attributed to the special microflower-like and porous structure as well as the synchronously formed continuous amorphous carbon matrix.
引用
收藏
页码:13060 / 13066
页数:7
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