Influence of carbon type on the structure of Na₂MnPO₄F/C as cathode material

Energy production and storage technologies have attracted much attention for everyday applications. Sodium-ion battery (SIB) has been recognized as one of the most potent types of technology for low-cost rechargeable batteries due to its abundant sodium resource. In the following, the synthesis of Na2MnPO4F /C material with the type of carbon is Citric Acid and Glucose using the solid-state method. The structure, morphology, particle size dimensions, etc. of the prepared materials were studied by XRD, SEM-EDX, DTA-TGA, PSA, and FTIR. The result is that Na2MnO4 with P21/n space group is a monoclinic structure and there is a decrease in cell volume and crystal size due to carbon coating. The particle sizes of NMPF 0%, NMPF 5%G, and NMPF 5%CA were 1127, 730, and 532 nm, respectively, with irregular particle shapes. However, it can be observed that glucose has more carbon content than citric acid as seen from the EDX results. The functional groups FTIR results obtained were Mn-O (stretching), O-P-O (bending-asymmetry), P-O (stretching-symmetry/asymmetry), and C-C (stretching-symmetry).