期刊
MATERIALS RESEARCH BULLETIN
卷 97, 期 -, 页码 24-29出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2017.08.047
关键词
Na5V12O32; Ultralong nanowires; Carbon coating; Cathode; Sodium-ion batteries
资金
- National Nature Science Foundation of China [11674258, 51572205]
- International Science & Technology Cooperation Program of China [2013DFR50710]
- Fundamental Research Funds for the Central Universities [2017II22GX]
- China Scholarship Council [2013GXZ980]
Carbon coated Na5V12O32 ultralong nanowires were synthesized by hydrothermal and solid-state reaction methods As a cathode material for sodium-ion batteries (SIBs), carbon coated Na5V12O32 ultralong nanowires exhibit high electrochemical performance with the redox potential ca. 2.8 V vs. Na+/Na, delivering initial discharge capacity of 105 mAh g(-1) at a rate of C/50. Furthermore, Carbon coated Na5V12O32 ultralong nano wires have the tap density of 3.2 g cm(-3) and volumetric energy density 940 Wh L-1. Results are confirmed that the carbon coating film with 10 nm thickness could effectively improve the electrochemical performance, and carbon coated Na5V12O32 ultralong may be used as cathode material for SIBs with highly environmental friendship and low cost.
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