Facile synthesis of iron-based compounds as high performance anode materials for Li-ion batteries
发布时间：2019-03-09
点击次数：
- 论文类型：
- 期刊论文
- 发表时间：
- 2014-01-01
- 发表刊物：
- RSC ADVANCES
- 收录刊物：
- Scopus、EI、SCIE
- 文献类型：
- J
- 卷号：
- 4
- 期号：
- 69
- 页面范围：
- 36507-36512
- ISSN号：
- 2046-2069
- 摘要：
- Iron oxide@C composites and lithium ferrites were synthesized by a cotton-template method as anode materials for Li-ion batteries. alpha-Fe2O3@C composites with 3-D porous hollow secondary structures were prepared by directly burning the cotton containing the iron salt (FeCl3 or Fe(NO3)(3)) in air, and the Fe3O4@C composites with similar structures were obtained by annealing alpha-Fe2O3@C under a N-2 atmosphere. alpha-LiFeO2 and alpha-LiFe5O8 particles with sizes of 100-500 nm were also prepared using a similar method. Electrochemical measurements showed that all these samples demonstrated good electrochemical performances as Li-ion battery anodes, especially alpha-Fe2O3@C derived from Fe(NO3)(3), which delivers a high reversible capacity of 990 mA h g(-1) at 100 mA g(-1) after 50 cycles. Both the porous hollow secondary structure and the suitable amount of amorphous carbon are significant for the electrochemical performances of the iron oxide@C composites. Such a method is simple, rapid and inexpensive and may facilitate the preparation of other high performance electrode materials with porous hollow structures.
- 第一作者
- Li, Keyan
- 合写作者
- Guo, Xinwen,Chen, Hao,Shua, Fenfen,Xue, Dongfeng
- 通讯作者
- Xue, DF (reprint author), Dalian Univ Technol, Sch Chem Engn, Dalian 116024, Peoples R China.