Journal
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
Volume 12, Issue 11, Pages 9925-9932Publisher
ESG
DOI: 10.20964/2017.11.26
Keywords
lithium ion battery; lithium vanadium phosphate; 3D carbon network; nanocomposite; high-power
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Funding
- National Science Foundation of China [21606003, 51676002]
- Anhui Provincial Natural Science Foundation [1608085QB35]
- Key Laboratory of Advanced Energy Materials Chemistry (Chinese Ministry of Education)
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To improve the charge transfer kinetics in monoclinic Li3V2(PO4)(3) (LVP), LVP nanoparticles with sizes ranging from 100 to 200 nm that were completely encapsulated in amorphous carbon networks (LVP/C) are synthesized by a facile sol-gel method using two carbon sources of citric acid and span80 (C24H44O6). Span80, possessing strongly hydrophilic functional groups, is essential for the formation of the three-dimensional conductive carbon matrix. When applied as the cathode for Li-ion batteries, LVP/C nanocomposite displays an excellent cycling stability and rate capability, e.g., delivering the capacity of 85 mAh g(-1) at the high rate of 30 C.
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