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Synthesis of LiFePO 4 in the Presence of Organic Reductant by Hydrothermal Method and its Characterization
Author(s) -
Gunawan Indra,
Wagiyo H.
Publication year - 2015
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.201550331
Subject(s) - citric acid , hydrothermal circulation , fourier transform infrared spectroscopy , scanning electron microscope , differential thermal analysis , nuclear chemistry , hydrothermal synthesis , sucrose , phosphate , chemistry , lithium iron phosphate , characterization (materials science) , iron phosphate , materials science , thermal analysis , infrared spectroscopy , inorganic chemistry , chemical engineering , organic chemistry , nanotechnology , thermal , electrochemistry , physics , optics , electrode , meteorology , diffraction , composite material , engineering
Summary Lithium iron phosphate, LiFePO 4 , was prepared in the presence of sucrose or citric acid as organic reductant by the hydrothermal treatment at 150 °C for 5 h and its characterization was done by thermo gravimetry/ differential thermal analysis (TG/DTA), X‐ray diffractometry (XRD), scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). The overall analysis indicate that the reductant plays an important role in controlling the size and the growth direction of the LiFePO 4 crystals under hydrothermal conditions. Larger crystals up to mm in size could be formed by using citric acid as the reductant. Purity of the LiFePO 4 prepared in the presence of citric acid was higher than that of sucrose. As a summary, citric acid was found to be an effective agent as reductant and carbon source.