THE EFFECT OF CHITOSAN ADDITION ON THE CHARACTERISTICS OF SODIUM MANGANATE THAT SYNTHESIZED WITH THE HYDROTHERMAL METHOD FOR SODIUM ION BATTERY CATHODES APPLICATION

• Main Author: Ibnu Mukhlis, Fajar
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/50201
• Institution: Institut Teknologi Bandung

Along with a demand for electronic devices, especially those that are portable, the need for lithium ion batteries which are usually used as energy storage technology is getting higher. However, the availability of lithium on earth are few and uneven. Therefore, this research proposes sodium manganate as an alternative material for sodium ion battery cathodes with the addition of chitosan which is an environmental friendly organic material as chelating agent. The precursors used in the synthesis are sodium hydroxide, potassium permanganate and manganese sulfate. Synthesis was carried out by hydrothermal method at 200oC for 8 hours with calcination at 600oC to remove moisture, air and remaining solvents in the sample. Chitosan was varied in the sample with concentration of 0% (without chitosan); 0.5%; 1%; and 1.5%. The XRD characterization results showed that sodium manganate has been formed which has a diffraction pattern according to PDF 01-072-0830 standards. The crystal size calculated by the Scherrer equation gets smaller along with the addition of chitosan which is 36.37 nm; 30.82 nm; 29.89 nm and 29.71 nm. From the crystallinity calculation, it showed that the sample with 1% chitosan had the greatest crystallinity, that is 84.72%. In addition, the SEM characterization results showed that the sample with 1% chitosan also produced the best nanorod so that the 1% chitosan concentration was the best composition in the synthesis of sodium manganate using the hydrothermal method.