Journal
JOURNAL OF POWER SOURCES
Volume 291, Issue -, Pages 102-107Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2015.04.100
Keywords
Iron oxide; Iron metal; Continuous hydrothermal flow synthesis; Lithium-ion battery; Anode
Funding
- EPSRC
- Royal Academy of Engineering
- Engineering and Physical Sciences Research Council [1570039, EP/M009394/1] Funding Source: researchfish
- EPSRC [EP/M009394/1] Funding Source: UKRI
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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.
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