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Amorphous silicon dioxide-based composites for high-performance Li-ion battery anodes
- Authors
- Lee, Seung-Su; Park, Cheol-Min
- Issue Date
- 10-Sep-2018
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Lithium-ion batteries; Anode materials; Amorphous SiO2-based anodes; Nanocomposite electrodes
- Citation
- ELECTROCHIMICA ACTA, v.284, pp 220 - 225
- Pages
- 6
- Journal Title
- ELECTROCHIMICA ACTA
- Volume
- 284
- Start Page
- 220
- End Page
- 225
- ISSN
- 0013-4686
1873-3859
- Abstract
- To design high performance SiO2-based anodes for Li-ion batteries (LIBs), an amorphous SiO2-FeSigraphite (alpha-SiO2/FeSi/G) composite was synthesized by a simple solid state synthetic method using SiO, Fe, and graphite powders. The alpha-SiO2/FeSi/G composite was comprised of well dispersed amorphous SiO2 and tiny (5-10 nm sized) FeSi inactive matrices within the graphite buffering matrices. The alpha-SiO2/FeSi/G composite electrode showed excellent electrochemical performance featuring high initial charge capacity of 729 m Ah g(-1), with high initial Coulombic efficiency of approximately 74%, and long capacity retention of 93.7% after 200 cycles, with a highly reversible capacity of 683 m Ah g(-1). (C) 2018 Elsevier Ltd. All rights reserved.
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