Improved cyclability of lithium-ion battery anode using encapsulated V2O3 nanostructures in well-graphitized carbon fiber

Yu Wang; Hui Juan Zhang; Agita Sesara Admar; Jizhong Luo; Chee Cheong Wong; Armando Borgna; Jianyi Lin

doi:10.1039/C2RA20472J

Improved cyclability of lithium-ion battery anode using encapsulated V₂O₃nanostructures in well-graphitized carbon fiber†

Yu Wang,*^a Hui Juan Zhang,^b Agita Sesara Admar,^a Jizhong Luo,^a Chee Cheong Wong,^b Armando Borgna^a and Jianyi Lin^a

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* Corresponding authors

^a Institute of Chemical and Engineering Sciences (ICES), 1, Pesek Road, Jurong Island, Singapore
E-mail: wang_yu@ices.a-star.edu.sg, prospectwy@gmail.com

^b School of Materials Science and Engineering, Nanyang Technological University (NTU), 50 Nanyang Avenue, Singapore

Abstract

A novel one-dimensional (1D) V₂O₃@carbon nanocomposite has been successfully synthesized for the first time. In the synthesis procedure, the previously obtained V₂O₅·xH₂O nanobelts act as template. By coating the nanobelts with a layer of polymerized C species under hydrothermal conditions followed by a calcination treatment at elevated temperature in an inert atmosphere, the V₂O₃@carbon nanocomposite was finally obtained. This nanocomposite consists of a well-graphitized carbon layer encapsulating the V₂O₃ nanostructures. The as-synthesized V₂O₃@carbon nanocomposite exhibits improved electrochemical performance in Li-ion batteries as the anode, showing enhanced stability, reversibility and cyclability in long-term cycles. At least a 98.5% capacity retention (660 mAh g⁻¹) was observed after high-rate galvanostatic measurements (250 cycles). These results indicate that the V₂O₃@carbon nanocomposite is a promising candidate as an anode material for next generation Li-ion batteries. In addition, this nanocomposite may also be a promising material for other important applications such as supercapacitors.

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DOI: https://doi.org/10.1039/C2RA20472J
Article type: Paper
Submitted: 14 Mar 2012
Accepted: 19 Apr 2012
First published: 20 Apr 2012

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RSC Adv., 2012,2, 5748-5753

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Improved cyclability of lithium-ion battery anode using encapsulated V₂O₃ nanostructures in well-graphitized carbon fiber

Y. Wang, H. J. Zhang, A. S. Admar, J. Luo, C. C. Wong, A. Borgna and J. Lin, RSC Adv., 2012, 2, 5748 DOI: 10.1039/C2RA20472J

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Improved cyclability of lithium-ion battery anode using encapsulated V₂O₃nanostructures in well-graphitized carbon fiber†

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Improved cyclability of lithium-ion battery anode using encapsulated V₂O₃ nanostructures in well-graphitized carbon fiber

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