Scalable synthesis of Fe3O4/C composites with enhanced electrochemical performance as anode materials for lithium-ion batteries

被引:35
作者
Hu, Meijuan [1 ]
Jiang, Yinzhu [1 ]
Yan, Mi [1 ]
机构
[1] Zhejiang Univ, Dept Mat Sci & Engn, State Key Lab Silicon Mat, Key Lab Adv Mat & Applicat Batteries Zhejiang Pro, Hangzhou 310027, Zhejiang, Peoples R China
基金
中国国家自然科学基金;
关键词
Lithium ion battery; Anodes; Solution combustion; Scalable synthesis; COMBUSTION SYNTHESIS; ONE-STEP; STORAGE; CHALLENGES; ELECTRODES; MAGNETITE;
D O I
10.1016/j.jallcom.2013.08.098
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
A facile and scalable process for synthesizing Fe3O4/C composites via a solution combustion technique followed by carbon-coating annealing treatment is developed. The as-prepared Fe3O4/C sample containing about 13.9 wt% carbon displays an attractive cycling performance up to 100 cycles (similar to 470 mA h g(-1) retained at 100 mA g(-1)). In addition, the Fe3O4/C electrode shows good rate capability, a capacity of 530 mA h g(-1) at 92.4 mA g(-1) is still recoverable and sustainable up to 60 cycles after charge/discharge process at high rates. The enhanced electrochemical performance can be attributed to the improved electron transport from the consecutive carbon layer and Li+ diffusion due to the nanoscale nature of the Fe3O4 active materials. The present work represents a successful example of solution combustion technique combined with carbon-coating annealing process for preparing iron oxide-based electrodes in large scale, which can also be extended to prepare other metal oxide/carbon composites. (C) 2013 Elsevier B. V. All rights reserved.
引用
收藏
页码:563 / 568
页数:6
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