Journal
ELECTROCHIMICA ACTA
Volume 152, Issue -, Pages 345-351Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2014.11.149
Keywords
Colloidal approach; Core-shell; Carbon coating; Silicon suboxide; Lithium ion batteries
Categories
Funding
- National Basic Research Program of China [2013CB934003]
- National High Technology Research and Development Program of China [2013AA050902]
- National Nature Science Foundation of China [21273019]
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SiOx-based electrodes have shown great potential as lithium ion battery anodes because of their high specific capacity. Nonetheless, synthesis of SiOx-based anodes in an industrially adaptable scale still remains as a great challenge. Herein, we adopt a highly efficient colloidal route to enable scalable and high yield synthesis of core-shell SiOx/C composite. The prepared SiOx/C composite presents a well-distributed nanostructure composing of SiOx nanoparticles coated with a thinner carbon layer. The electrode delivers a stable reversible capacity of ca. 820 mAh g(-1) over 100 cycles, and exhibits excellent rate capability. The nano-scale feature of SiOx and the coating carbon layer ensure the excellent electrochemical performance of SiOx/C. The approach is facile, mild and mass-productive, which can be adopted for tunable large-scale production of high-capacity SiOx/C composite anode. (C) 2014 Elsevier Ltd. All rights reserved.
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