Design and investigation of cathode materials for rechargeable calcium ion batteries
(2025)
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DesignandInvestigationofCathodeMaterialsforRechargeableCalciumIoneries_Final.pdf
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- Authors
- Supervisors
- Vlad, Alexandru
- Abstract
- Calcium-ion batteries (CIBs) are a promising alternative to lithium-ion batteries (LIBs) due to calcium’s abundance, low cost, and favorable redox potential. However, their development is hindered by the lack of high-performance cathode materials and challenges such as sluggish ion diffusion and high polarization. This thesis investigates the electrochemical performance of CaCoSO, amorphous iron fluorophosphate, and layered NaV0.5Ti0.5S2 as CIB cathodes. CaCoSO exhibits irreversible electrochemical activity linked to material instability, with side reactions explored to understand performance limitations. Amorphous iron fluorophosphate offers improved cycling stability, while NaV0.5Ti0.5S2 demonstrates calcium storage with reduced phase transitions. Key factors affecting calcium storage, including structural stability and electrolyte compatibility, are analyzed. Despite progress, achieving high capacity and stable cycling remains challenging. This thesis provides insights into material limitations and proposes strategies for improving calcium-based cathodes, contributing to the advancement of CIB research and future energy storage development.
- Affiliations
Citations
Tie, D. (2025). Design and investigation of cathode materials for rechargeable calcium ion batteries. https://hdl.handle.net/2078.5/245657