以碳包覆磷酸铁锂为前驱体,磷酸二氢锂为矿化剂,采用水热法制备出纯相磷酸铁锂体单晶,单晶宏观呈类六棱柱形态.晶体由三个主要生长面(010)、(101)、(100)构成.对单晶结构进行分析,获得晶胞结构为D2h16,Pbnm空间群,其中a=1.03217 nm,b=0.60042 nm,c=0.46889 nm,α=β=γ=90°.LiFePO4晶体的拉曼图谱显示的三个强峰分别是949 cm-1,996 cm-1和1068 cm-1,可以作为区分磷酸铁的特征峰.
参考文献
| [1] | Yuri Janssen;Dhamodaran Santhanagopalan;Danna Qian .Reciprocal Salt Flux Growth of LiFePO4 Single Crystals with Controlled Defect Concentrations[J].Chemistry of Materials: A Publication of the American Chemistry Society,2013(22):4574-4584. |
| [2] | Fisher CAJ;Islam MS .Surface structures and crystal morphologies of LiFePO4: relevance to electrochemical behaviour[J].Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology,2008(11):1209-1215. |
| [3] | Wu, J.;Dathar, G.K.P.;Sun, C.;Theivanayagam, M.G.;Applestone, D.;Dylla, A.G.;Manthiram, A.;Henkelman, G.;Goodenough, J.B.;Stevenson, K.J. .In situ Raman spectroscopy of LiFePO_4: Size and morphology dependence during charge and self-discharge[J].Nanotechnology,2013(42):424009-1-424009-9. |
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