Kinerja baterai elektrolit air tawar dan air laut sebagai sumber energi aplikatif

Masrufaiyah, - (2016) Kinerja baterai elektrolit air tawar dan air laut sebagai sumber energi aplikatif. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Material anode adalah salah satu unsur penting yang dapat meningkatkan tegangan dan kapasitas arus pada baterai air laut.Aluminium dan paduan seng/aluminium adalah material yang digunakan sebagai anode pada baterai air laut. Polarisasi potensiodinamik, galvanostatic discharge dan electrochemical impedance spectroscopy (EIS) dari aluminium dianalisis dan dibandingkan dengan paduan seng/aluminium. Pengukuran tegangan, arus dan temperatur dilakukan pada salinitas elektrolit, laju elektrolit, jarak antar elektroda yang berbeda.Material katoda yang digunakan adalah tembaga. Hasil polarisasi potensiodinamik menunjukkan bahwa potensial korosi lempeng paduan sengaluminium jauh lebih negatif jika dibandingkan lempeng aluminium dengan nilai potensial korosi sebesar -944,6 mV dan kerapatan arus korosi sebesar 16,8 μA∙cm- 2, tetapi resistansi polarisasi paduan seng/aluminium jauh lebih kecil jika dibanding aluminium yaitu paduan seng/aluminium 535,4 Ω dan aluminium 23,5 kΩ. Performa sel terbaik selama tiga jam discharge ditunjukkan oleh sel Zn/Al-Cu pada kombinasi keadaan salinitas elektrolit 5%, laju elektrolit 0,5 liter/jam dan jarak antar elektroda 2 cm dengan tegangan rata-rata sebesar 73,6 mV dan arus rata-rata 717,8 μA. Hasil uji EIS menunjukkan bahwa proses elektrokimia interface paduan Zn/Al dan Al sama-sama ditentukan oleh reaksi aktivasi terkontrol. ========================================================================================================== One of the key materials applied in seawater activated battery was the metal anode which increases the cell voltage and current capacity. Zinc/alluminium alloy and alluminium were the developed anode material for seawater activated batteries. The potentiodynamic polarization, galvanostatic discharge and electrochemical impedance spectroscopy (EIS) of alluminium were studied and compared with zinc/alluminium alloy. Voltage, current and temperature measurement were investigated at different electrolyte salinity, space between electrodes and electrolyte rate. Copper was cathode material used in cell. potentiodynamic polarization result shows that zinc/alluminium alloy obtains the more negative corrotion potentials of -944,630 mV with electric current density 16,7800 μA∙cm-2 than alluminium. However, polarization resistance of zinc/alluminium alloy obtains lower than alluminium which were 535,390 Ω for zinc/alluminium alloy and 23,4620 kΩ for alluminium. The best discharge perfomance was shown by Zn/Al-Cu cell in 5% electrolyte salinity, 2 cm space between electrodes and 0,5 litre/hour electrolyte rate of average volatges 73,56 mV and average current 717,79 μA. EIS study reveal that interfacial electrochrmical process both of zinc/alluminium and alluminium was determined by activation controlled reaction.

Item Type: Thesis (Masters)
Additional Information: RTF 621.312 42 Mas k
Uncontrolled Keywords: aluminium, paduan seng/aluminium, tembaga, baterai air laut
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK1001 Production of electric energy or power
Divisions: Faculty of Industrial Technology > Physics Engineering > 30101-(S2) Master Thesis
Depositing User: - Taufiq Rahmanu
Date Deposited: 29 Nov 2019 08:15
Last Modified: 29 Nov 2019 08:15
URI: https://repository.its.ac.id/id/eprint/72118

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