Facile synthesis of core/shell-structured Sn/onion-like carbon nanocapsules as high-performance anode material for lithium-ion batteries

被引:39
作者
Cui, Caiyun [1 ]
Liu, Xianguo [1 ]
Wu, Niandu [1 ]
Sun, Yuping [2 ]
机构
[1] Anhui Univ Technol, Sch Mat Sci & Engn, Maanshan 243002, Peoples R China
[2] Anhui Univ Technol, Ctr Engn Practice & Innovat Educ, Maanshan 243032, Peoples R China
基金
中国国家自然科学基金;
关键词
Core-shell; Sn; Carbon materials; Nanocomposites; Anode; Lithium-ion batteries; COMPOSITE; GROWTH; SHELL;
D O I
10.1016/j.matlet.2014.12.055
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Core/shell-structured Sn/C nanocapsules with Sn nanoparticles as the core and defective onion-like carbon as the shell are synthesized by a modified arc-discharge method. The Sn/C nanocapsule anode maintains a high discharge capacity of 585 mAh g(-1) after 100 cycles at 0.1 A g(-1) and obtains a high reversible capacity of similar to 480 mAh g(-1) at 5 A g(-1). The remarkable electrochemical performance is attributed to the effective combination of the Sn nanoparticle cores and the defective onion-like carbon shells, which simultaneously solves the major problems of pulverization, loss of electrical contact, and particle aggregation encountered in Sn anode. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码:35 / 37
页数:3
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