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.
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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: | http://repository.its.ac.id/id/eprint/72118 |
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