“…NASICON has also a relatively high ionic conductivity resulting from the disorder of lithium ions in the structure, favorable redox properties, low cost, structural stability, and simple fabrication procedures [5, 6, 12]. Many methods have been reported to synthesize Li 3 Fe 2 (PO 4 ) 3 nanostructures such as hydrothermal [13, 14], gel combustion [15], solid state [16–19], solution with the use of citric acid [20], sol-gel [21], ultrasonic spray combustion [22], and ion exchange with molten salt [23, 24]. …”