Advanced Electrolytes to Enable Lithium-metal Anodes for use in EV Batteries

There is an ever-increasing need for safe, reliable batteries that have significantly increased energy density. To meet this need, our small business is developing an advanced, increased energy density battery for electric vehicles employing lithium metal anodes and Nickel Manganese Cobalt 811 cathodes, by using an innovative electrolyte based on novel inorganic liquid being developed by our company. It is anticipated that this new cell will deliver the increased energy density (Watt-hours/kilogram) as specified in Department of Energy performance goals, and to do it safely as this is critical to widespread electrification of the United States vehicle fleet. In order to produce these new higher energy batteries, a combination of components must be assembled and optimized. The approach will begin with the highest energy anode possible ľ lithium metal ľ and design the balance of the cell to most efficiently accommodate its safe use. This begins with the use of a revolutionary new electrolyte formulation, one that completely replaces current organic electrolytes ľ specifically replacing all organic carbonates ľ in favor of robust inorganic components. In Phase I, several candidate electrolyte salts and solvents will be selected and blended with the base inorganic fluid we are developing to form a logical test matrix. Cells using combinations of these candidate components will be constructed and screened against key performance metrics. This will reveal the best performing components and combinations that will then be used for more complete further study. As this work continues in Phase II and beyond, the electrolyte formulation will improve and become more refined ľ with the batteries so produced becoming better and closer to full commercial reality. This ultimately results in a practical, fieldable new battery designed with transportation applications (scooters, cars, light trucks, etc.) in mind from the outset. The benefits to the public at large are as tremendous as they are obvious. Having reliable batteries that meet the expectations of the transportation needs of the public ľ and to do it with a very high safety record ľ is critical to swift public acceptance of the electrification of our transportation fleet.