Growth of LiFePO4 pure single crystals by hydrothermal method

In this paper, A pure LiFePO4 single crystals was grown by hydrothermal method using carbon coated LiFePO4 as precursor and LiH2PO4 as mineralizer. The crystal is six prism morphology and consisted of three main growth face (010), (101) and (100). The crystal structure was analyzed and the results show that cell structure is D2h16, Pbnm space group and the parameter include: a=1.03217 nm, b=0.60042 nm, c=0.46889 nm, α=β=γ=90°. Raman spectra of LiFePO4 crystal showed three strong peaks at 949 cm-1, 996 cm-1 and 1068 cm-1 and it can be used as characteristic peaks to distinguish FePO4.