Fe3O4/C composites synthesized from Fe-based xerogels for anode materials of Li-ion batteries

被引:16
作者
Chen, Xiao Yan [1 ]
Liu, Bin Hong [1 ]
Li, Zhou Peng [2 ]
机构
[1] Zhejiang Univ, Dept Mat Sci & Eng, Hangzhou 310027, Zhejiang, Peoples R China
[2] Zhejiang Univ, Dept Chem & Biol Eng, Hangzhou 310027, Zhejiang, Peoples R China
基金
中国国家自然科学基金;
关键词
Fe-based xerogel; Nanocomposite; Cyclic stability; Anode; Li-ion batteries; HIGH-PERFORMANCE ANODE; ELECTRODE MATERIALS; ELECTROCHEMICAL PERFORMANCE; LITHIUM STORAGE; HIGH-CAPACITY; CARBON; ALPHA-FE2O3; CHALLENGES; OXIDE; NANOCRYSTALS;
D O I
10.1016/j.ssi.2014.04.004
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
In this study, Fe3O4/carbon nanocomposites as anode materials of Li-ion batteries were synthesized through heating hierarchically porous Fe-based xerogels under N-2 atmosphere. The pyrolysis of amorphous Fe-xerogel base materials resulted in the simultaneous formation of Fe3O4/C composites, in which Fe3O4 particles of less than 50 nm were uniformly dispersed and embedded in a porous carbon matrix. Due to the favorable nanostructure, the synthesized Fe3O4/C composites with a proper carbon content of 18.8 wt.% exhibited good electrochemical performance including high capacity and rate capability as well as much enhanced cyclic stability. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码:45 / 52
页数:8
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