Patent ID: 11876171
Assignee: HITACHI ZOSEN CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 7:
8. A production method of an all-solid-state battery, the method comprising:
a step of forming an electrode group that includes a positive electrode, a negative electrode, and a solid electrolyte layer interposed between the positive electrode and the negative electrode; and
a pressing step of pressing the electrode group,, wherein at least one of the positive electrode and the negative electrode contains first solid electrolyte particles,
wherein in the step of forming the electrode group, the solid electrolyte layer is formed by using second solid electrolyte particles having ion conductivity by a dry process,
wherein an average particle diameter d1 of the first solid electrolyte particles used for the electrode, and an average particle diameter d2 of the second solid electrolyte particles used for the solid electrolyte layer satisfy d2>d1,
wherein the average particle diameter d2 of the second solid electrolyte particles is 3 μm or more,
wherein the second solid electrolyte particles include a first group of particles and a second group of particles, and
wherein the second group of particles of the second solid electrolyte particles each have an average particle diameter D22 of 1 nm or more and less than 100 nm.