▎ 摘　　要

NOVELTY - A solid state battery comprises positive electrode, organic-inorganic composite solid electrolyte separator and negative electrode sequentially stacked. The positive electrode comprises active material, conductive agent and polymer electrolyte. The organic-inorganic composite solid electrolyte separator comprises lithium ion-containing polymer solid electrolyte and lithium ion-containing inorganic solid electrolyte, and has ion migration number of greater than or equal to 0.9. The negative electrode is one of lithium, lithium alloy and composite negative electrode. USE - Solid state battery. ADVANTAGE - The solid state battery has low interface impedance, controllable interface side reaction, high specific energy and prolonged service life due to no lithium dendritic growth phenomenon.