High capacity nanocomposite Fe3O4/Fe anodes for Li-ion batteries

被引：40
|
作者：
Luebke, Mechthild [1 ]
Makwana, Neel M. [1 ]
Gruar, Robert [1 ]
Tighe, Chris [4 ]
Brett, Dan [2 ]
Shearing, Paul [2 ]
Liu, Zhaolin [3 ]
Darr, Jawwad A. [1 ]
机构：
[1] UCL, Dept Chem, London WC1H 0AJ, England
[2] UCL, Dept Chem Engn, London WC1E 7JE, England
[3] ASTAR, Inst Mat Res & Engn, Singapore 117602, Singapore
[4] Univ London Imperial Coll Sci Technol & Med, Fac Engn, Dept Chem Engn, South Kensington SW7 2AZ, England
来源：
JOURNAL OF POWER SOURCES | 2015年 / 291卷
基金：
英国工程与自然科学研究理事会;
关键词：
Iron oxide; Iron metal; Continuous hydrothermal flow synthesis; Lithium-ion battery; Anode; ELECTROCHEMICAL PERFORMANCE; HYDROTHERMAL SYNTHESIS; SUPERCRITICAL WATER; NANOPARTICLES; MICROSPHERES; MANUFACTURE;
D O I：
10.1016/j.jpowsour.2015.04.100
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：
High capacity, stable Fe3O4/Fe nanocomposites for Li-ion battery anodes were manufactured via heattreating Fe3O4-C (amorphous) nanoparticles that were made via a continuous hydrothermal flow synthesis (CHFS) reactor. Compared to analogous Fe3O4 nanoparticles, the Fe3O4/Fe nanocomposite anodes (vs. Li/Li+), displayed a high specific capacity of ca. 390 mAh g(-1), after 50 cycles, at a modest current rate of 200 mA g(-1) (at the highest Fe metal content). The performance of the Fe3O4/Fe materials at higher current rates was also excellent (ca. 260 mAh g(-1), at the highest current rate of 2000 mA g(-1)), which confirms that the presence of Fe metallic particles can significantly improve cycling stability of Li-ion battery anodes by retaining structural metal oxide integrity. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：102 / 107
页数：6
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