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Li 3 V 2 (PO 4) 3/graphene nanocomposite as a high performance cathode material for lithium ion battery

Publication Type : Journal Article

Thematic Areas : Nanosciences and Molecular Medicine

Publisher : Ceramics International

Source : Ceramics International, Volume 41, Number 1, Part A, p.389 - 396 (2015)

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Keywords : Solvothermal

Campus : Kochi, Mysuru

School : Center for Nanosciences

Center : Nanosciences

Department : Nanosciences and Molecular Medicine

Year : 2015

Abstract : Abstract In this work, pure {LVP} nanoparticles and an LVP/graphene nanocomposite are successfully synthesized by a simple and cost effective polyol based solvothermal method, which can be easily scaled up. The synthesized nanocomposite contained small (30–60 nm) {LVP} nanoparticles completely and uniformly anchored on reduced graphene nanosheets. As a cathode for lithium ion batteries, the nanocomposite electrode delivered high reversible lithium storage capacity (189.8 mA h g−1 at 0.1 C), superior cycling stability (111.8 mA h g−1 at 0.1 C, 112.6 mA h g−1 at 5 C, and 103.4 mA h g−1 at 10 C after 80 cycles) and better C-rate capability (90.8 mA h g−1 at 10 C), whereas the pure {LVP} nanoparticles electrode delivered much less capacity at all investigated current rates. The enhanced electrochemical performance of the nanocomposite electrode can be attributed to the synergistic interaction between the uniformly dispersed {LVP} nanoparticles and the graphene nanosheets, which offers a large number of accessible active sites for the fast diffusion of Li ions, low internal resistance, high conductivity and more importantly, accommodates the large volume expansion/contraction during cycling.

Cite this Research Publication : A. Kumar Rai, Thi, T. Vu, Gim, J., Kim, S., and Kim, J., “Li 3 V 2 (PO 4) 3/graphene nanocomposite as a high performance cathode material for lithium ion battery”, Ceramics International, vol. 41, pp. 389 - 396, 2015

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