The Chemical Stability of NASICON Solid Electrolyte for Seawater Batteries

Rechargeable batteries are seen as a key mediator in the sharing of alternative renewable energy sources. The goal of energy storage systems (ESSs) is to store renewable energy so it can be used efficiently at a moment’s notice. The energy storage systems market has a significant role for lithium-ion batteries due to their increased energy density, capacity, and energy competitiveness. Because of the rising cost of lithium, the growing demand for lithium batteries in electric vehicles and energy storage systems, and the limited spread of lithium, it may be difficult to use them over a long period. Rechargeable seawater batteries are viewed as alternatives to Li-ion batteries because of the unending and complimentary sodium ion active materials. The purpose of this work is to test an electrochemical cell, of a hybrid battery, which contains a NASICON ceramic membrane as a solid electrolyte. Charge/discharge testing was performed at constant current of different values, using Pt/C as catalyst and seawater as catholyte. Testing of the stability over time of the solid electrolyte was performed in sodium chloride solution at different pHs. Also, the possible applications of batteries activated with seawater in the marine sector, were presented.