Lithium secondary batteries containing lithium salt-ionic liquid solvent electrolyte

摘要

A rechargeable lithium metal or lithium-ion cell comprising a cathode having a cathode active material and/or a conductive supporting structure, an anode having an anode active material and/or a conductive supporting nano-structure, a porous separator electronically separating the anode and the cathode, a highly concentrated electrolyte in contact with the cathode active material and the anode active material, wherein the electrolyte contains a lithium salt dissolved in an ionic liquid solvent with a concentration greater than 3 M. The cell exhibits an exceptionally high specific energy, a relatively high power density, a long cycle life, and high safety with no flammability.

主权项

1. A rechargeable lithium metal or lithium-ion cell comprising a cathode having a cathode active material or conductive supporting structure, an anode having an anode active material, a porous separator electronically separating said anode and said cathode, a highly concentrated electrolyte in contact with said cathode active material or conductive supporting structure and said anode active material, wherein said electrolyte contains a lithium salt dissolved in a first ionic liquid solvent with a concentration greater than 3 M.