Patent ID: 11908995
Assignee: TAIYO YUDEN CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. An all solid battery comprising:
a solid electrolyte layer;
a positive electrode layer provided on a first face of the solid electrolyte layer, a part of the positive electrode layer extending to a first edge portion of the solid electrolyte layer;
a first margin layer that is provided on an area of the first face of the solid electrolyte layer where the positive electrode is not provided;
a negative electrode layer provided on a second face of the solid electrolyte layer, a part of the negative electrode layer extending to a second edge portion of the solid electrolyte layer;
a second margin layer that is provided on an area of the second face of the solid electrolyte layer where the negative electrode layer is not provided;
wherein a most abundant component of the first margin layer and the second margin layer is solid electrolyte, wherein the first margin layer and the second margin layer have low ionic conductivity wherein a total ionic conductivity of the first margin layer and a total ionic conductivity of the second margin layer are each lower than a total ionic conductivity of the solid electrolyte layer by two digits or more at a same temperature, wherein the first margin layer and the second margin layer are made of a Li—Al—Z—P—O based material, and the solid electrolyte layer is a Li—Al—Ge—O based material.