Patent ID: 11942270
Assignee: MURATA MANUFACTURING CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 12:
13. An electricity storage device comprising:
an internal element having:
a first main surface and a second main surface that each extend along a length direction and a width direction and face each other in a thickness direction,
a first side surface and a second side surface that each extend along the length direction and the thickness direction and that face each other in the width direction,
a first end surface and a second end surface that each extend along the width direction and the thickness direction and that face each other in the length direction,
a first internal electrode that extends out to the first end surface,
a second internal electrode that extends out to the second end surface,
a separator layer disposed between the first internal electrode and the second internal electrode, and
an electrolytic solution;

a first end surface electrode disposed on the first end surface and connected to the first internal electrode; and
a second end surface electrode disposed on the second end surface and connected to the second internal electrode,
wherein the first internal electrode, the second internal electrode, the separator layer, the first end surface electrode, and the second end surface electrode are integrally sintered with each other to form a sintered body,
wherein the first internal electrode and the second internal electrode each have a current collector and an active material layer, and
wherein the active material layer contains active material particles and an inorganic filler composed of an inorganic substance.