Author: D. Purwaningsih, H. Sutrisno, K. H. Sugiyarto, C. Kusumawardani and N. A. Kusumaningrum

DOI: http://doi.org/10.31788/RJC.2023.1628164

The aim of this study was to synthesize LiFe1-xNixPO4/C with x = 0; 0.05; 0.07; 0.09 using the reflux method assisted by microwave irradiation. The goal was to increase the value of the electronic conductivity and reaction rate of Li+ compounds. The results showed that the method successfully synthesized LiFePO4/C and LiFe1-xNixPO4/C with an orthorhombic crystal structure in the Pnma space group. The optimum reflux-microwave irradiation time was 10 minutes, and increasing moles of Ni doping lead to a decrease in the lattice parameters cell volume. The crystalline size ranged from 21.42–22.62 nm, and the surface of the compound particles was irregular. The compound LiFe0.93Ni0.07PO4/C had the highest conductivity (5.45 × 10-7 S/cm).

Keywords: LiFePO4, LiFe1-xNixPO4/C, Microwave, Orthorhombic, Pnma