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Embargoed Access, Embargo ends: 01/12/2027
Thesis
EFFECT OF ADDITIVES ON THE PERFORMANCE OF VANADIUM REDOX BATTERY USING GENERATION 1-VANADIUM ELECTROLYTE
Masters by Research, Murdoch University
2026
Abstract
The global energy demand is projected to double by 2050 and triple by the end of the century. This has necessitated the development of efficient and sustainable energy storage solutions. Vanadium redox flow battery, a rechargeable battery, has gained interest in energy storage due to its inherent energy efficiency, low cross-contamination risk, simple control, high safety, low maintenance cost, flexible design, and environmental friendliness. However, VRFB’s relatively low energy density and thermal instability pose significant challenges hindering their widespread adoption. The use of organic and inorganic additives, including ionic organic salts and phosphate-based compounds, has been found to be beneficial in addressing these shortcomings. As such, this research investigates the impact of ionic organic salts and phosphate-based compounds on VRFB electrolyte performance, aiming to determine optimal concentrations of additives. This research utilised thermal stability analysis and electrochemical measurements, including cyclic voltammetry and electrochemical impedance spectroscopy, to assess the impact of varying additive concentrations on the electrolyte activity. Battery efficiency analysis was conducted to evaluate the impact of the additive on the overall performance of the VRFB. The results indicate that the tested ionic organic salt, though improving thermal stability, negatively impacted the electrochemical activity of the positive VRFB electrolyte. Conversely, tested phosphate-based additives demonstrated improved thermal stability and electrochemical activity with a promising impact on VRFB cell efficiency. This research highlights the potential of phosphate-based additives for advancing VRFB technology. The findings in this research provide valuable insights for optimising VRFB electrolyte formulations with additive concentrations to achieve superior performance, supporting the transition towards a sustainable energy future.
Details
- Title
- EFFECT OF ADDITIVES ON THE PERFORMANCE OF VANADIUM REDOX BATTERY USING GENERATION 1-VANADIUM ELECTROLYTE
- Authors/Creators
- Gideon Gbedemah
- Contributors
- Aleks Nikoloski (Supervisor) - Murdoch University, Centre for Water, Energy and WasteTouma B Issa (Supervisor) - Murdoch University, School of Engineering and EnergyPritam Singh (Supervisor)
- Awarding Institution
- Murdoch University; Masters by Research
- Identifiers
- 991005831942107891
- Murdoch Affiliation
- School of Engineering and Energy
- Resource Type
- Thesis
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