Effect of composition of LiMn2O4 cathode sheet on the electrochemical performance of lithium ion battery
| Autor: | Jorena Bangun, Ramlan, Slamet Priyono, Beta Riana Liasari |
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| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Journal of Physics: Conference Series. 1282:012055 |
| ISSN: | 1742-6596 1742-6588 |
| DOI: | 10.1088/1742-6596/1282/1/012055 |
| Popis: | The effect of composition of LiMn2O4 sheet on the electrochemical performance of lithium ion battery has been studied. LiMn2O4 powder is synthesized by solid state reaction method using raw material such as LiOH.H2O and MnO2. Raw materials are stoichiometrically mixed and milled using planetary ball milling for 4 hours to become precursor. The precursor is sintered using a muffle furnace at 800 °C for 4 hours in a free air atmosphere. The sintered material is pulverized and sieved 200 mesh to form a fine LiMn2O4 powder. The material is analyzed by XRD to determine the phase and crystal structure. Powder is prepared for sheet by mixing with PVDF binder and carbon black additive in various ratio such as 85:10:5, 88:8:4 and 90:7:3. After becoming slurry, the slurry was coated onto Al foil with 300 µm in thickness and dried at 70 °C for an hour. The sheet is assembled into a half cell battery with Li metal as the counter electrode and LiPF6 as liquid electrolyte. The battery cell is measured by using the automatic battery cycler WBCS 3000 to determine the electrochemical performance. The measurement showed that samples with composition 90% active material has highest capacity with 3.6 mAh but gives bad cycle. |
| Databáze: | OpenAIRE |
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