In the early days, all-solid-state lithium batteries all referred to all-solid-state metal lithium batteries with lithium metal as the negative electrode. In other words, all-solid-state batteries often use lithium metal as the negative electrode. This is the previous concept.

　　The all-solid-state lithium battery in the early days refers to the all-solid-state metal lithium battery with lithium metal as the negative electrode. In other words, the all-solid-state often uses lithium metal as the negative electrode. This is the previous concept.

　　All-solid-state lithium batteries have several potential technical advantages. One is high safety, because it does not have an organic solvent as an electrolyte to cause electrolyte burning problems.

　　The second is the high energy density. It should be noted that the density and usage of solid electrolytes are higher than that of liquid electrolytes. When the positive and negative materials are the same, its advantages are not obvious. Of course, if there is a solid electrolyte, there will be no electrolysis. There is a problem of liquid leakage, so it can be stacked one by one, unlike we have to build a soft bag, so the volumetric specific energy will be higher.

　　Third, the choice of cathode material is wide, because the anode is lithium metal, and the cathode does not contain lithium. In addition, the voltage window of the electrolyte will be wider, the choice of cathode material will be wider, and the specific energy can also be improved; fourth, the system has a high specific energy, because the electrolyte has no fluidity, it can be easily connected in series to form a high-voltage monomer , Which is conducive to the improvement of the efficiency and energy density of the battery system.