UJI KINERJA BATERAI ION NATRIUM BERBASIS ANODA TiO2 DAN KATODA NaNiPO4 DENGAN VARIASI PELARUT DAN KONSENTRASI ELEKTROLIT

NURHALIZA, DINDA and Syarif, Nirwan (2025) UJI KINERJA BATERAI ION NATRIUM BERBASIS ANODA TiO2 DAN KATODA NaNiPO4 DENGAN VARIASI PELARUT DAN KONSENTRASI ELEKTROLIT. Undergraduate thesis, Sriwijaya University.

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Abstract

This research focuses on testing the performance of sodium-ion batteries using variations in NaNO₃ electrolyte concentrations (1M and 4M) and solvent types (H₂O and DMSO), with the aim of determining the most effective combination. The objective of this study is to analyze the electrochemical characterization of TiO₂/NaNiPO₄ electrodes and to assess the influence of solvent and electrolyte concentration on battery performance. The NaNiPO₄ cathode was synthesized using the sol-gel method. Scanning Electron Microscopy (SEM) analysis revealed that both TiO₂ and NaNiPO₄ exhibited agglomerated particle morphologies with porous structures. X-ray Diffraction (XRD) analysis of TiO₂ showed eight diffraction peaks at 2θ values of 25.3°, 37.8°, 38.5°, 48.0°, 53.9°, 55.0°, 62.7°, and 75.0°, while NaNiPO₄ exhibited ten peaks at 10.38°, 20.14°, 20.70°, 31.76°, 34.78°, 45.46°, 49.48°, 56.49°, 66.21°, and 75.28°. The electrochemical performance of the TiO₂/NaNiPO₄ battery was evaluated using Cyclic Voltammetry (CV), Electrochemical Impedance Spectroscopy (EIS), Open Circuit Voltage (OCV), and Closed Circuit Voltage (CCV). The most stable CV results were obtained with the NaNO₃ 1M + DMSO electrolyte, showing the smallest ΔV value of 0.09766 V. The best EIS curve was also observed for the NaNO₃ 1M + DMSO variation, as indicated by the smallest semicircle diameter. In the OCV measurement, the highest initial voltage of 0.59 V was recorded for NaNO₃ 4M + DMSO. Meanwhile, CCV testing demonstrated that NaNO₃ 1M + DMSO achieved the highest power density of 0.15 W at a current close to 0.5 A. These results indicate that the NaNO₃ 1M + DMSO electrolyte provides the best performance due to enhanced ion mobility, stable electrochemical reactions, and lower internal resistance, thereby improving the overall efficiency of sodium-ion battery systems.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Baterai Ion Natrium, TiO2, NaNiPO4, Elektrolit, Pelarut
Subjects:	Q Science > QD Chemistry > QD1-999 Chemistry Q Science > QD Chemistry > QD450-801 Physical and theoretical chemistry
Divisions:	08-Faculty of Mathematics and Natural Science > 47201-Chemistry (S1)
Depositing User:	Dinda Nurhaliza
Date Deposited:	08 Sep 2025 06:31
Last Modified:	08 Sep 2025 06:31
URI:	http://repository.unsri.ac.id/id/eprint/183710

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