Aditya, Nyoman Suprayojana Trisna (2016) Analisa Pengaruh Temperatur Hidrotermal pada Proses Sintesis Anoda MnO2 Terhadap Morfologi dan Performa Elektrokimia Baterai Lithium Ion. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Baterai Lithium-ion merupakan salah satu media yang ringkas dan efektif untuk menyimpan energi. Salah satu faktor efektivitas kinerja dari baterai lithium terletak pada anodanya. Pada umumnya, anoda baterai yang digunakan pada baterai ion lithium adalah grafit. Anoda grafit ini ternyata memiliki kekurangan yaitu specific energy 372 mAh/g yang tergolong kecil untuk dapat memenuhi tuntutan kinerja baterai ion lithium yang makin tinggi. Maka dari itu dilakukan penelitian anoda menggunakan MnO2 karena memiliki kapasitas penyimpanan yang tinggi, yaitu 615 mAh/g. Metode sintesis yang digunakan yaitu metode hidrotermal selama 24 jam dengan variasi temperatur 140oC, 160oC, dan 180oC. Terdapat dua prekursor untuk mensintesis MnO2 yaitu 1 mmol KMnO4 dan 1 mmol NH4Br dilarutkan dalam 40 ml aquades. Proses kalsinasi dilakukan pada temperatur 400oC selama 3 jam. Pengujian karakteriasasi yang dilakukan yaitu XRD dan SEM. Sedangkan pengujian performa elektrokimia baterai dilakukan uji EIS, CV dan Charge-discharge. Berdasarkan hasil karakterisasi SEM dan XRD, telah terbentuk fasa α-MnO2 dengan morfologi nanowire dengan kisaran panjang 3.117-10.865 μm. Dari hasil pengujian performa elektrokimia, sampel dengan variasi temperatur hidrotermal 180oC memiliki performa baterai yang paling bagus yaitu dengan kapasitas 77.54 mAh/g.
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Lithium-ion battery is one medium that is concise and effective way to save energy. One of the factors the effectiveness of the performance of the lithium battery is located on the anode. In general, battery anodes used in lithium ion batteries is graphite. Graphite anode is proved to have the disadvantage that specific energy 372 mAh / g which is small to be able to meet the performance demands of lithium ion batteries higher and higher. Therefore research using MnO2 anode because it has a high storage capacity, which is 615 mAh / g. Synthesis method used is the hydrothermal method for 24 hours with a temperature variation of 140oC, 160oC and 180oC. There are two precursors to synthesize MnO2 ie 1 mmol KMnO4 and 1 mmol NH4Br dissolved in 40 ml of distilled water. The calcination process is carried out at a temperature of 400oC for 3 hours. Characteritations testing done of XRD and SEM. While testing the electrochemical battery performance test EIS, CV and Charge-discharge. Based on the results of SEM and XRD characterization, has been formed with the phase α-MnO2 nanowire morphology with long range 3.117-10.865 μm. The electrochemical performance of the test results, the sample with hydrothermal 180oC temperature variation has the most excellent battery performance is with a capacity of 77.54 mAh /g.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSMt 621.312 423 Adi a |
| Uncontrolled Keywords: | mangan dioksida, hidrotermal, anoda, lithium, prekursor |
| Subjects: | T Technology > TN Mining engineering. Metallurgy T Technology > TN Mining engineering. Metallurgy > TN752.I5 Steel--Heat treatment |
| Divisions: | Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis |
| Depositing User: | Users 13 not found. |
| Date Deposited: | 19 Sep 2017 08:44 |
| Last Modified: | 19 Sep 2017 08:44 |
| URI: | http://repository.its.ac.id/id/eprint/48864 |
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