期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 646, 期 -, 页码 170-174出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2015.05.170
关键词
Na3V2(PO4)(3); Carbon coating; Cathode; Sodium ion batteries
资金
- Program of Hubei Province, Natural Science Foundation of Hubei Province, China [2015CFC774]
- National Science Foundation of China [21373155, 21333007]
- Program for New Century Excellent Talents in University [NCET-12-0419]
- Hubei National Funds for Distinguished Young Scholars [2014CFA038]
A Na3V2(PO4)(3)/C nanocomposite is successfully synthesized by a simple pre-reduction and subsequent calcination process. The structural, morphological, and electrochemical properties of the Na3V2(PO4)(3)/C nanocomposite are investigated. The Na3V2(PO4)(3)/C electrode delivered an initial discharge capacity of 106 mAh g(-1) at a current rate of 20 mA g(-1), equivalent to reversible storage of 1.8 Na per unit of Na3V2(PO4)(3). The electrode also exhibited excellent rate capability, as it could release 92 mAh g(-1) at 500 mA g(-1), 77mAh g(-1) at 1000 mA g(-1), and 47 mAh g(-1) at 2000 mA g(-1). The preliminary experimental results suggest that this Na3V2(PO4)(3)/C nanocomposite is a promising cathode material for low-cost and high-performance Na ion batteries. (C) 2015 Elsevier B.V. All rights reserved.
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