Publication Type:

Journal Article

Source:

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

URL:

http://www.sciencedirect.com/science/article/pii/S0272884214013194

Keywords:

Solvothermal

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.