Scaled Electricity Storage Using Lithium-Sulfur Batteries

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The University of St Andrews and OXIS Energy Ltd will collaborate in order to demonstrate a lithium-sulfur (Li-S) flowbattery. Li-S chemistry has two key advantages; it uses cheap and abundant raw materials; and delivers vastly improvedenergy density in comparison to incumbent technologies. Li-S batteries are therefore cheaper per unit of energy storedthan incumbent technologies. The proposed project will seek to demonstrate how this can be exploited together with anovel Redox Flow Battery (RFB) design to deliver cost effective energy storage at a grid level. The project will demonstratethe operation of a lab scale Li-S RFB. This will involve the design and construction of new test hardware; the developmentof new electrolyte formulations; the testing of novel electrode materials and composites; and finally the investigation ofoperation conditions. The resulting battery will establish the commercial feasibility of the concept for stationary applications,where large battery capacity and low cost are essential. This inexpensive grid-scale battery promises to efficiently connectintermittent renewables to the grid thus increasing energy security while simultaneously reducing both bills and emissions.