Composite Cathode and Lithium-Ion Battery Comprising Same, and Method for Producing Said Composite Cathode

A lithium ion battery comprising:

• electrodes,
• a separator, and
• an electrolyte,
• wherein one of the electrodes is a composite cathode comprising a collector, an active cathode material, a binder, an inorganic solid lithium ion conductor, and a liquid electrolyte.

A method for producing a composite cathode having a collector, an active cathode material, a binder, an inorganic solid lithium ion conductor, and a liquid electrolyte, the method comprising the steps of:

• combining at least the active cathode material, the binder in solution with a solvent, and the inorganic solid lithium ion conductor to form a homogeneous slurry;
• applying the slurry to a collector;
• stripping off the solvent under reduced pressure and/or elevated temperature, forming a porosity in the slurry;
• adjusting the porosity by calendering;
• and
• filling up the porosity with the liquid electrolyte.