Title

Confined synthesis of graphene wrapped LiMn0.5Fe0.5PO4 composite via two step solution phase method as high performance cathode for Li-ion batteries

RIS ID

109320

Publication Details

Xiang, W., Wu, Z., Wang, E., Chen, M., Song, Y., Zhang, J., Zhong, Y., Chou, S., Luo, J. & Guo, X. (2016). Confined synthesis of graphene wrapped LiMn0.5Fe0.5PO4 composite via two step solution phase method as high performance cathode for Li-ion batteries. Journal of Power Sources, 329 94-103.

Abstract

A novel strategy for confined synthesis of graphene wrapped nano-sized LiMn0.5Fe0.5PO4 hybrid composite has been developed, including co-precipitation and solvothermal reactions. The LiMn0.5Fe0.5PO4 nanoparticles with a constrained diameter of 20 nm are homogeneously wrapped by a continuous interconnected graphene sheets. The mechanism and composite structure evolution during the process are carefully investigated and discussed. With the shortened Li+ diffusion paths and enhanced electron conductivity, the hybrid composite shows high discharge capacity and superior rate performance with the discharge capacities of 166 mA h g−1 at 0.1 C and 90 mA h g−1 at 20 C. Excellent cycle stability is also demonstrated with only about 7.8% capacity decay after 500 cycles at 1 C.

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Link to publisher version (DOI)

http://dx.doi.org/10.1016/j.jpowsour.2016.06.108