LITHIUM ENERGY STORAGE DEVICE

摘要

The present invention generally relates to lithium based energy storage devices. According to the present invention there is provided a lithium energy storage device comprising: at least one positive electrode; at least one negative electrode; and an ionic liquid electrolyte comprising an anion, a cation counterion and lithium mobile ions, wherein the anion comprises a nitrogen, boron, phosphorous, arsenic or carbon anionic group having at least one nitrile group coordinated to the nitrogen, boron, phosphorous, arsenic or carbon atom of the anionic group.