Sintesis LiMn2O4 dari MnO2 Hasil Pelindihan Batuan Mangan sebagai Bahan Baku Katoda Baterai Ion Litium

Putri, Haryudini Arsa (2020) Sintesis LiMn2O4 dari MnO2 Hasil Pelindihan Batuan Mangan sebagai Bahan Baku Katoda Baterai Ion Litium. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Penelitian mengenai sintesis litium mangan oksdia (LiMn2O4) sebagai material katoda baterai ion litium telah berhasil dilakukan. Baterai ion litium merupakan salah satu teknologi untuk menyimpan dan menghasilkan energi yang banyak digunakan dalam berbagai alat elektronik. Pembuatan katoda LiMn2O4 dimulai dengan melindih serbuk batuan yang mengandung mangan menggunakan asam fluorida (HF) dan asam nitrat (HNO3) untuk meningkatkan kadar MnO2. Hasil pelindihan dioptimasi menggunakan Respon Surface Methodology (RSM) dengan desain Box-Behnken dan dihasilkan kondisi optimum pada komposisi 1,5 gram serbuk batuan mangan dilindih dengan 20 mL HNO3 pada suhu 60 °C selama 6 jam. Pada penelitian ini, didapatkan recovery pelindihan dan kadar MnO2 paling tinggi masing-masing sebesar 95,37% dan 105,97 %. Material katoda LiMn2O4 telah berhasil disintesis menggunakan metode solid-state reaction dengan MnO2 dan Li2CO3 sebagai prekursor. Hasil dari uji performa material katoda LiMn2O4 didapatkan kapasitas charge dan discharge masing-masing sebesar 58,90 dan 55,80 mAh/g dengan efisiensi coulomb sebesar 94,74 % serta konduktivitas listrik sebesar 5,26 x 10-4 S/cm pada siklus pertama pengujian. ================================================================================================================== The research about synthesis of lithium manganese oxide (LiMn2O4) for materials lithium ion batteries cathode has been fabricated. Lithium ion batteries is one type of batteries technology to stored and produced energy which is widely used in various electronic devices. The first step for preparation of cathode LiMn2O4 was leaching the manganese ore powder with hydrofluoric acid (HF) and nitric acid (HNO3) to beneficiation of MnO2 content. The result of leaching, then optimized using Response Surface Methodology (RSM) with Box-Behnken design and optimal conditions were produced when 1.5 grams of manganese ore powder was leaching with 20 mL HNO3 at 60 °C for 6 hours. Based on this study, the highest recovery of leaching and MnO2 content was 95.37% and 105.97%, respectively. Lithium manganese oxide (LiMn2O4) cathode material has been successfully synthesized through solid-state reaction with MnO2 and Li2CO3 as precursor. The electrochemical test result show that LiMn2O4 cathode material has charge and discharge capacity of 58.90 and 55.80 mAh/g, respectively with coloumb efficiency was 94.74% and electrical conductivity was 5.26 x 10-4 S/cm in the first cycle.

Item Type: Thesis (Masters)
Uncontrolled Keywords: Manganese Ore, Leaching, LiMn2O4 Cathode, Lithium Ion Battery, Bijih Mangan, Pelindihan, Katoda LiMn2O4, Baterai Ion Litium
Subjects: Q Science > QD Chemistry > QD115 Electrochemical analysis
Q Science > QD Chemistry > QD117.S64 Spectrophotometry
Q Science > QD Chemistry > QD553 Electrochemistry. Electrolysis
Q Science > QD Chemistry > QD75.2 Chemistry, Analytic
Divisions: Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47101-(S2) Master Thesis
Depositing User: Haryudini Arsa Putri
Date Deposited: 07 Aug 2020 05:53
Last Modified: 18 Aug 2020 03:49
URI: https://repository.its.ac.id/id/eprint/77178

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