期刊
MATERIALS LETTERS
卷 216, 期 -, 页码 46-49出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2017.12.136
关键词
Composite materials; Lithium-ion batteries; Cotton fibers; Hollow coaxial structure; Cathode materials
资金
- National Nature Science Foundation of China [51572079, 51772090]
- Natural Science Foundation of Hunan Province [2016JJ5008, 2016JJ5041]
- Hunan Provincial Education Department [16A055]
The Li3V2(PO4)(3)/C composite with hollow coaxial structure has been successfully synthesized via a facile repeated immersion method induced by cotton fibers. The morphologies, structures and properties are investigated by X-ray diffractometer, scanning electron microscopy and galvanostatic charge-discharge tests. Li3V2(PO4)(3)/C composite displays a unique hollow coaxial structure constructed by hollow carbon fibers filled with Li3V2(PO4)(3)/C particles inside and coated by Li3V2(PO4)(3)/C layer outside. Li3V2(PO4)(3)/C composite exhibits good rate performance with a specific capacity of 115.7 mAh g(-1) at 15 C rate between 3.0 and 4.3 V. The improved properties can be attributed to the formation for hollow coaxial structure. (C) 2018 Elsevier B.V. All rights reserved.
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