SILICONE BALL CONTAINING ELECTRODE AND LITHIUM ION BATTERY INCLUDING THE SAME

The invention provides a lithium ion battery comprising: an anode comprising an anode active material layer on an anode current collector, the anode active material layer having a mass load higher than 60 g/m; a cathode comprising a cathode active material layer on a cathode current collector, the cathode active material layer having a mass load higher than 80 g/m; and an electrolytic solution comprising an imide anion based lithium salt and LiPOF, wherein at least one of the anode and cathode active material layers comprises a spacer comprising silicone ball.