Active material ball electrode layer structure

A negative material ball anode layer structure, comprising:

• a plurality of active material balls arranged in layers to form the electrode layer structure, each of the active material balls including a plurality of first active material particles, a first electrically conductive material, a first binder and a first mixed electrolyte including a first electrolyte and a second electrolyte;
• and
• a second mixed electrolyte including the first electrolyte and the second electrolyte, disposed outside of the active material balls and filling gaps between the active material balls to be against an outer surface of the active material balls to form a resistance of volume expansion of the active material balls;
• wherein the first electrolyte has a deformation ability, and the second electrolyte has a relatively lesser deformation ability compared to the first electrolyte;
• wherein the first active material particles are at least one of a lithium metal, a carbon material, a silicon or a silicon oxide;
• wherein the first electrolyte is at least one of a sulfide-based solid electrolyte, a hydride based solid electrolyte, a halide based solid electrolyte or a polymer solid electrolyte or a combination thereof;
• wherein the second electrolyte is a lithium lanthanum zirconium oxide (LLZO) electrolyte or a lithium aluminum titanium phosphate (LATP) electrolyte;
• wherein a volume content of the second electrolyte of the second mixed electrolyte is greater than 50% of a total volume content of the second mixed electrolyte;
• and
• wherein a volume content of the first electrolyte of the first mixed electrolyte is greater than 50% of a total volume content of the first mixed electrolyte.