Thin film all-solid-state battery

[0031] Example 1, cyclic type

[0032]The positive electrode slurry composed of lithium iron phosphate (LiFeP04), lithium germanium phosphorus sulfur solid electrolyte (Li10GeP2S12), carbon black conductive additive, and binder is coated on the electrode aluminum foil, dried and cut into a certain size of positive electrode diaphragm. The negative electrode slurry composed of graphite, lithium germanium phosphorus sulfur solid electrolyte (Li10GeP2S12) is coated on the electrode copper foil, dried and cut into a certain size of negative diaphragm. The positive and negative diaphragms are pressed in parallel by roller pressing method on the same side of the package film A. The marking method is used to remove part of the electrode material on the positive and negative diaphragms to form a dense grid. The width of the engraving line is 10~100μm. The lithium germanium phosphorus sulfur solid electrolyte and binder with organic solvent dispersion and mixing uniformly to form an electr...

[0033] Example 2, the rate type

[0034] Lithium cobalt oxide (LCO) and lithium phosphorus oxychloride solid electrolyte (LPON) are sintered and pressed into a film under high temperature and pressure and pressed on the electrode aluminum foil, and cut into a certain size of positive electrode diaphragm. The LiIn alloy is pressed onto the electrode copper foil and cut into a negative diaphragm of a certain size. The marking method is used to remove part of the electrode material on the positive and negative diaphragms to form a dense grid. The width of the notch line is 10-100 μm. The lithium phosphorus sulfur chloride solid electrolyte (Li5.5PS4.5C11.5) and the binder with an organic solvent dispersed and mixed evenly to form an electrolyte slurry, the above diaphragm award is coated with the positive and negative diaphragms and the gap between the two, and the positive and negative diaphragms are located on the same side and connected to the positive and negative diaphragms. The...