Analisis Pengaruh Variasi Konsentrasi MnSO4 Dan Waktu Elektrodeposisi Pada Proses Sintesis MnO2 Terhadap Performa Elektrokimia Aqueous Rechargeable Zinc Ion Battery (ARZIB)

Alfianah, Namirah Shofi (2023) Analisis Pengaruh Variasi Konsentrasi MnSO4 Dan Waktu Elektrodeposisi Pada Proses Sintesis MnO2 Terhadap Performa Elektrokimia Aqueous Rechargeable Zinc Ion Battery (ARZIB). Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Kebutuhan energi saat ini meningkat pesat seiring dengan pertumbuhan penduduk. Salah satu alat penyimpanan energi yang berpotensi adalah baterai. Baterai yang paling sering dijumpai adalah lithium ion. Namun seiring berjalannya waktu baterai lithium ion memiliki kekurangan, biaya yang mahal dan ketersediaan lithium ion menipis. Baterai zinc ion khususnya aqueous rechargeable zinc ion battery (ARZIB) dinilai mampu menggantikan performa baterai lithium ion. Pada penelitian ini digunakan metode elektrodeposisi dengan variasi konsentrasi MnSO4 sebesar 3.4 M, 5.1 M, dan 10.2 M serta waktu elektrodeposisi sebesar 30 menit, 45 menit, dan 60 menit yang berpengaruh terhadap pembentukan struktur kristal dan morfologi MnO2. Berdasarkan hasil uji karakterisasi didapatkan bahwa pengaruh konsentrasi elektrolit MnSO4 dan waktu proses sintesis elektrodeposisi terhadap bentuk polimorfi yaitu terbentuk adalah α- MnO2 dengan ukuran kristal sebesar 74- 104 μm. Berdasarkan hasil pengujian performa elektrokimia didapatkan hasil bahwa baterai zinc ion yang memiliki performa paling baik diantara variasi lainnya yaitu pada variasi konsentrasi elektrolit MnSO4 sebesar 10.2 M dan waktu proses sintesis elektrodeposisi selama 60 menit. Sampel ini memiliki nilai Rct sebesar 13,265 Ohm serta nilai Rs sebesar 2.073 Ohm dan memiliki kapasitas sebesar 743.52 mAh/gr pada cycle ke 10 dan 336.237 mAh/gr pada cycle ke 90 dengan nilai capacity loss sebesar 3.83%. Hal ini diakibatkan adanya reaksi pada proses penyimpanan muatan pada katoda MnO2 baterai berdasarkan pada proses interkalasi/de-interkalasi. Kemampuan penyimpanan berasal dari reaksi redoks yang cepat antara Mn (III) dan Mn (IV) dengan interkalasi kation proton secara massal setelah reduksi diikuti dengan de-interkalasi saat oksidasi.
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Energy needs are currently increasing rapidly along with population growth. One potential energy storage device is a battery. The most common battery is lithium ion. However, over time lithium ion batteries have drawbacks, expensive costs and the availability of lithium ion is running low. Zinc ion batteries, especially the aqueous rechargeable zinc ion battery (ARZIB) are considered capable of replacing the performance of lithium ion batteries. In this study, the electrodeposition method was used with variations in MnSO4 concentrations of 3.4 M, 5.1 M, and 10.2 M and electrodeposition times of 30 minutes, 45 minutes, and 60 minutes which affected the formation of the crystal structure and morphology of MnO2. Based on the results of the characterization test, it was found that the influence of the electrolyte concentration of MnSO4 and the time of the electrodeposition synthesis process on the polymorphic form formed was α-MnO2 with a crystal size of 74-104 μm. Based on the results of the electrochemical performance test, it was found that the zinc ion battery had the best performance among the other variations, namely the variation of the MnSO4 electrolyte concentration of 10.2 M and the electrodeposition synthesis process time of 60 minutes. This sample has a Rct value of 13.265 Ohm and an Rs value of 2.073 Ohm and has a capacity of 743.52 mAh/gr in the 10th cycle and 336.237 mAh/gr in the 90th cycle with a loss capacity value of 3.83%. This is due to a reaction in the charge storage process at the MnO2 cathode of the battery based on the intercalation/de-intercalation process. Storage capability stems from the rapid redox reaction between Mn(III) and Mn(IV) with mass intercalation of proton cations after reduction followed by de-intercalation during oxidation.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	Aqueous Rechargeable Zinc Ion (ARZIB), Baterai, Elektrodeposisi, Katoda, MnO2.
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA418.9.F5 Electrospinning. Nanofibers
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User:	NAMIRAH SHOFI ALFIANAH
Date Deposited:	03 Aug 2023 07:44
Last Modified:	03 Aug 2023 07:44
URI:	http://repository.its.ac.id/id/eprint/102337

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