High energy all-solid-state battery cell

A method for fabricating an all-solid-state battery cell, comprising:

• supplying a first free-standing film including a cathode active material layer;
• supplying a second free-standing film including an anode active material layer;
• supplying a third free-standing film comprising a sulfide membrane;
• densifying the first free-standing film, the second free-standing film, and the third free-standing film;
• arranging a lithium layer and an anode current collector adjacent to the anode active material layer;
• and
• arranging a cathode current collector adjacent to the cathode active material layer.

An all-solid-state battery cell for a vehicle, comprising:

• C cathode electrodes comprising including a cathode active material layer arranged on at least one side of a cathode current collector,
• wherein the cathode active material layer comprises cathode active material including LiNixMnyCo1-x-yO2 (where 0.95>x>0.6;
• y>0.05) in a range from 68 to 90 wt %, sulfide electrolyte comprising Li6PS5Cl in a range from 10 to 30 wt %, and a binder comprising polytetrafluoroethylene in a range from 0.1 to 3 wt %;
• A anode electrodes including an anode active material layer and an anode current collector,
• wherein the anode active material layer includes silicon particles in a range from 70 to 90 wt %, sulfide electrolyte including Li6PS5Cl in a range from 10 to 30 wt %, and a binder comprising polytetrafluoroethylene in a range from 0.1 to 5 wt %;
• S separators comprising a sulfide membrane, where C, A, and S are integers greater than one,
• wherein the sulfide membrane includes sulfide electrolyte including Li6PS5Cl, a binder including poly (ethylene oxide) (PEO), a lithium salt, and a filler;
• and
• a lithium layer arranged between the anode current collector and the anode active material layer.