Onion-like carbon coated CuO nanocapsules: A highly reversible anode material for lithium ion batteries

被引:39
作者
Liu, Xianguo [1 ]
Bi, Nannan [1 ]
Feng, Chao [1 ]
Or, Siu Wing [2 ]
Sun, Yuping [3 ]
Jin, Chuangui [1 ]
Li, Weihuo [1 ]
Xiao, Feng [1 ]
机构
[1] Anhui Univ Technol, Sch Mat Sci & Engn, Anhui Key Lab Met Mat & Proc, Maanshan 243002, Peoples R China
[2] Hong Kong Polytech Univ, Dept Elect Engn, Kowloon, Hong Kong, Peoples R China
[3] Anhui Univ Technol, Ctr Engn Practice & Innovat Educ, Maanshan 243002, Peoples R China
基金
中国国家自然科学基金;
关键词
Carbon layer; Copper oxide; Anode electrode; Lithium ion batteries; ELECTRODE MATERIALS; FACILE SYNTHESIS; SHELL; PERFORMANCE; NANOSTRUCTURES; FABRICATION; NANOWIRES; NETWORKS; HYBRID; ARRAY;
D O I
10.1016/j.jallcom.2013.10.178
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The synthesis and characterization of CuO/C nanocapsules for application as anode material in lithium ion batteries are reported. Introduction of onion-like carbon shell on the CuO nanoparticles leads to the improved stability, electric conductivity and electrochemical performance. When evaluated as potential anode materials for lithium-ion batteries, the novel CuO/C nanocapsules deliver an initial discharge capacity of 1043.9 mA h g(-1) at 100 mA g(-1) and maintain a high reversible capacity of 628.7 mA h g(-1) after 50 charge-discharge cycles, much higher than those of the CuO nanoparticles. A postmortem analysis of the CuO and CuO/C anodes subjected to prolonged cycling reveals the existence of a lower degree of surface cracking and particle breakage in the CuO/C anode than the CuO anode. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码:1 / 5
页数:5
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