NaFePO4 particles via sol-gel method: A review on synthesis and characterization.

LiFePO₄ as a cathode material for lithium ion batteries (LIB) is successfully commercialized because of good cycle stability and tremendous electrochemical performances. Encouraged by the tremendous success of LiFePO4, the analogous NaFePO₄ has been expected to show similar properties as LiFePO₄. Hence, here we report the synthesis of NaFePO₄ via sol-gel method and the structural study of NaFePO₄ as a cathode material for Na-ion batteries. The as-synthesized NaFePO₄ samples were calcined under air and argon atmosphere at the temperature 800°C with the variation of holding time. In this report, we present the successfully synthesized NaFePO₄ based on XRD and SEM result. XRD results show the presence of NaFePO₄ and some amount of secondary phase. EDX measurement confirms the presence of all elements from starting materials (Na, Fe, P and O) and the SEM result indicates the non-uniform shape of particle with the size range ∼1 µm. [ABSTRACT FROM AUTHOR]