Issue 73, 2014

Facile synthesis of nitrogen-doped carbon derived from polydopamine-coated Li3V2(PO4)3 as cathode material for lithium-ion batteries

Abstract

Nitrogen-doped, carbon-coated Li3V2(PO4)3 cathode materials were prepared by the oxidative self-polymerization of dopamine on the Li3V2(PO4)3 surface and subsequent carbonization of polydopamine. Field emission scanning electron microscopy (FESEM), scanning transmission electron microscopy-energy dispersive X-ray spectroscopy (STEM-EDS) and X-ray photoelectron spectroscopy (XPS) were performed to characterize morphologies and structures. The uniform nitrogen-doped, carbon coating provided a continuous electronic conducting network. Furthermore, the existence of nitrogen in the composite can improve electronic conductivity. As cathode materials for lithium-ion batteries, the nitrogen-doped, carbon-coated Li3V2(PO4)3 composites display superior rate performance and excellent cycle performance over the pristine Li3V2(PO4)3 and carbon-coated Li3V2(PO4)3. The electrode delivers high specific capacity of 74 mA h g−1 at 10 C, and still remains at 95.4% of initial capacity after 100 cycles at 1 C.

Graphical abstract: Facile synthesis of nitrogen-doped carbon derived from polydopamine-coated Li3V2(PO4)3 as cathode material for lithium-ion batteries

Supplementary files

Article information

Article type
Paper
Submitted
29 май 2014
Accepted
05 авг 2014
First published
06 авг 2014

RSC Adv., 2014,4, 38791-38796

Author version available

Facile synthesis of nitrogen-doped carbon derived from polydopamine-coated Li3V2(PO4)3 as cathode material for lithium-ion batteries

C. Zhang, H. Li, N. Ping, G. Pang, G. Xu and X. Zhang, RSC Adv., 2014, 4, 38791 DOI: 10.1039/C4RA05089D

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