Abstract
Abstract A new process for comprehensively utilizing ilmenite is studied. FePO4·xH2O, and Ti-containing precursors are prepared from the iron-rich lixivium and titanium hydrolysate, which are obtained from ilmenite by mechanical activation and leaching. ICP analysis confirms that the FePO4·xH2O contains small amounts of Al and Ti (Fe:Al:Ti = 100:1.69:1.09) and that the Ti-containing precursor contains a small amount of Si (Ti:Si = 100:0.86). LiFePO4 and Li4Ti5O12 synthesized from the as-prepared precursors exhibit well-crystallized structure, nanoscale particles, and excellent electrochemical properties.
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