On the Behaviour of Sea-Salt Batteries
D.S.J. Kouwenberg (TU Delft - Electrical Engineering, Mathematics and Computer Science)
LM Ramirez Elizondo – Mentor (TU Delft - DC systems, Energy conversion & Storage)
J.J. Alpizar Castillo – Mentor (TU Delft - DC systems, Energy conversion & Storage)
Pavol Bauer – Coach (TU Delft - DC systems, Energy conversion & Storage)
Arno H.M. Smets – Coach (TU Delft - Photovoltaic Materials and Devices)
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Abstract
To enable affordable and environmentally friendly eletrical energy storage, a battery was designed using sea-water as electrolyte. The performance of this battery was tested through repeated cycling under a variety of circumstances. The Coulombic and energetic efficiency were around 80% and 68% respectively. The battery saw a strong drop in performance after ~60 cycles. This was corroborated with results gained from four separate cells. Efforts to model the battery were limited by the accuracy of the utilized model itself.