Siagian, Rehhagel Simon Martua (2026) Analisis Pengaruh Konsentrasi Tetrapropylammonium Bromide (TPAB) dan Tetraethylammonium Bromide (TEAB) Terhadap Performa Elektrokimia dan Korosivitas Pada Zinc-Bromine Redox Flow Battery (ZBRFB). Other thesis, Institut Teknologi Sepuluh Nopember.
![[thumbnail of 5011221168-Undergraduate_Thesis.pdf]](http://repository.its.ac.id/style/images/fileicons/text.png) |
Text
5011221168-Undergraduate_Thesis.pdf - Accepted Version Restricted to Repository staff only Download (6MB) | Request a copy |
Abstract
Zinc-Bromine Redox Flow Battery (ZBRFB) merupakan sistem penyimpanan energi skala besar yang menjanjikan, namun menghadapi tantangan berupa pembentukan bromin bebas Br2 yang menyebabkan volatilitas, fenomena crossover, dan degradasi komponen akibat sifat korosif elektrolit. Penelitian ini bertujuan untuk menganalisis pengaruh variasi konsentrasi Bromine Complexing Agent (BCA), yaitu Tetrapropylammonium Bromide (TPAB) dan Tetraethylammonium Bromide (TEAB), terhadap performa elektrokimia dan tingkat korosivitas dalam sistem ZBRFB. Metodologi penelitian mencakup pembuatan larutan elektrolit ZnBr2 dengan variasi konsentrasi BCA TEAB 0,1, 0,2, 0,3 M dan TPAB 0,01, 0,02, 0,03 M dan pengujian performa elektrokimia melalui Galvanostatic Charge-Discharge (GCD), Cyclic Voltammetry (CV), dan Electrochemical Impedance Spectroscopy (EIS), serta pengujian korosivitas menggunakan metode Potentiodynamic Polarization. Hasil penelitian menunjukkan bahwa variasi konsentrasi BCA mempengaruhi karakteristik elektrokimia sistem. Pada pengujian elektrokimia, konsentrasi 0,02 M TPAB memberikan performa terbaik dalam reaksi redoks dan hambatan transfer muatan, sementara pada penggunaan TEAB, performa terbaik dicapai pada konsentrasi 0,1 M. Dari aspek korosivitas, peningkatan konsentrasi BCA secara konsisten menurunkan laju korosi sistem karena kemampuan BCA dalam mengikat bromin bebas. TEAB terbukti lebih efektif dibandingkan TPAB dalam menekan korosivitas, dengan laju korosi terendah sebesar 0,00156 mm/tahun dicapai pada konsentrasi 0,3 M TEAB.
================================================================================================================================
The Zinc-Bromine Redox Flow Battery (ZBRFB) is a promising large-scale energy storage system; however, it faces challenges such as free bromine (Br2) formation, which leads to volatility, crossover phenomena, and component degradation due to the corrosive nature of the electrolyte. This study aims to analyze the influence of varying concentrations of Bromine Complexing Agent (BCA) specifically Tetrapropylammonium Bromide (TPAB) and Tetraethylammonium Bromide (TEAB) on the electrochemical performance and corrosivity levels within the ZBRFB system. The research methodology involved preparing ZnBr2 electrolyte solutions with BCA concentration variations of TEAB 0,1, 0,2, 0,3 M and TPAB 0,01, 0,02, 0,03 M and evaluating electrochemical performance via Galvanostatic Charge-Discharge (GCD), Cyclic Voltammetry (CV), and Electrochemical Impedance Spectroscopy (EIS), as well as assessing corrosivity using the Potentiodynamic Polarization method. The results indicate that BCA concentration variations significantly affect the system's electrochemical characteristics. In electrochemical testing, a 0.02 M TPAB concentration provided the best performance regarding redox activity and charge transfer resistance, whereas for TEAB, the optimal performance was achieved at a 0.1 M concentration. Regarding corrosivity, increasing the BCA concentration consistently reduced the system's corrosion rate due to the ability of BCA to sequester free bromine. TEAB proved to be more effective than TPAB in suppressing corrosivity, with the lowest corrosion rate of 0.00156 mm/year achieved at a concentration of 0.3 M TEAB.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Bromine Complexing Agent, Korosivitas, Performa Elektrokimia, Zinc-Bromine Redox Flow Battery, Corosivity, Electrochemical Performance. |
| Subjects: | Q Science Q Science > Q Science (General) Q Science > QD Chemistry > QD1 Oxidation-reduction reaction. Q Science > QD Chemistry > QD115 Electrochemical analysis Q Science > QD Chemistry > QD471 Chemical compounds - Structure and formulas Q Science > QD Chemistry > QD553 Electrochemistry. Electrolysis Q Science > QD Chemistry > QD63.O9 Electrolytic oxidation. Q Science > QD Chemistry > QD75.2 Chemistry, Analytic |
| Divisions: | Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis |
| Depositing User: | Rehhagel Simon Martua Siagian |
| Date Deposited: | 24 Jul 2026 06:36 |
| Last Modified: | 24 Jul 2026 06:36 |
| URI: | http://repository.its.ac.id/id/eprint/137025 |
Actions (login required)
 |
View Item |