US 12,230,764 B2
All solid battery
Sachie Tomizawa, Tokyo (JP); Daigo Ito, Tokyo (JP); Chie Kawamura, Tokyo (JP); and Kotaro Mizuno, Tokyo (JP)
Assigned to TAIYO YUDEN CO., LTD., Tokyo (JP)
Filed by TAIYO YUDEN CO., LTD., Tokyo (JP)
Filed on Jun. 11, 2020, as Appl. No. 16/899,539.
Claims priority of application No. 2019-115730 (JP), filed on Jun. 21, 2019.
Prior Publication US 2020/0403274 A1, Dec. 24, 2020
Int. Cl. H01M 10/0562 (2010.01); H01M 4/62 (2006.01); H01M 10/0585 (2010.01)
CPC H01M 10/0585 (2013.01) [H01M 4/625 (2013.01); H01M 10/0562 (2013.01); H01M 2300/0071 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An all solid battery comprising:
a solid electrolyte layer of which a main component is oxide-based solid electrolyte;
a first electrode layer that is provided on a first main face of the solid electrolyte layer and includes an active material; and
a second electrode layer that is provided on a second main face of the solid electrolyte layer and includes an active material,
wherein the solid electrolyte layer, the first electrode layer and the second electrode layer have a sintered structure,
wherein at least one of the first electrode layer and the second electrode layer includes a plurality of aggregates of carbon particles and each of the plurality of aggregates encloses a respective cavity,
wherein the plurality of aggregates are spaced from each other,
wherein, in a cross section of the first electrode layer, at least one of the cavities is enclosed all around by only the corresponding plurality of aggregates without any other material,
wherein an area ratio of the at least one cavity in the at least one of the plurality of aggregates is 26% or more and 50% or less, in a cross section of the at least one of the plurality of aggregates.