Sintesis Lithium Mangan Oksida (Limn2o4) Untuk Katoda Baterai Lithium Ion Dengan Metode Solution

Abstract

Research on the synthesis of Lithium Manganese Oxide (LiMn2O4) for Lithium Ion Battery Cathodes with Solution Method has been conducted. This experiment was carried out using the solution method. In this study, the synthesis was carried out by varying the calcination temperature. The raw materials used are Lithium Acetate (C2H3O2Li), Manganese Acetate (C4H6MnO4.4H2O), Hydrochloric Acid (HCl), and Ethanol (C2H5OH) as solvents which are dissolved to become LiMn2O4 precursors. The synthesis was carried out at calcination temperatures 600 oC, 700 oC and 800 oC, for 4 hours then pounded with mortar until smooth. Characterization carried out included. STA test results at 280oC-380oC there was a mass decrease of 11.9973% due to the release of mass of steam. water and decomposition of raw material C4H6MnO4.4H2O. XRD analysis can be seen that the increase in peak temperature of LiMn2O4 phase intensity is getting sharper, the peak indicates that the impurity Li2O phase decreases. SEM analysis results show that the higher the calcination temperature, the larger the particle size formed, because in the process calcination occurs in the process of densification (compaction) of the particles.

Telah dilakukan penelitian tentang Sintesis Lithium Mangan Oksida (LiMn2O4) Untuk Katoda Baterai Lithium Ion Dengan Metode Solution percobaan ini dilakukan dengan metode solution. Dalam penelitian ini, sintesis dilakukan dengan variasi suhu kalsinasi. Bahan baku yang digunakan berupa Lithium Asetat (C2H3O2Li), Mangan Asetat (C4H6MnO4.4H2O), Asam Klorida (HCl), dan Ethanol (C2H5OH) sebagai pelarut yang dilarutkan menjadi menjadi prekursor LiMn2O4. Sintesis dilakukan pada suhu kalsinasi 600 oC, 700 oC dan 800 oC, selama 4 jam kemudian ditumbuk dengan mortar sampai halus. Karakterisasi yang dilakukan meliputi. Hasil uji STA suhu 280oC-380oC terjadi penurunan massa sebanyak 11,9973% karena adanya pelepasan massa uap air dan dekompossi bahan baku C4H6MnO4.4H2O. Analisa XRD dapat diketahui kenaikan suhu puncak intensitas fasa LiMn2O4 semakin bertambah tajam, puncak yang menunjukkan fasa Li2O impuritas menurun. Hasil Analisa SEM bahwa semakin tinggi suhu kalsinasi maka ukuran partikel yang terbentuk semakin besar, karena dalam proses kalsinasi terjadi proses densifikasi (pemadatan) partikel.