US 12,412,926 B2
All-solid-state secondary battery
Kazumasa Tanaka, Tokyo (JP); and Tomohiro Yano, Tokyo (JP)
Assigned to TDK CORPORATION, Tokyo (JP)
Appl. No. 17/295,604
Filed by TDK CORPORATION, Tokyo (JP)
PCT Filed Nov. 27, 2019, PCT No. PCT/JP2019/046379
§ 371(c)(1), (2) Date May 20, 2021,
PCT Pub. No. WO2020/111127, PCT Pub. Date Jun. 4, 2020.
Claims priority of application No. 2018-225662 (JP), filed on Nov. 30, 2018.
Prior Publication US 2022/0021022 A1, Jan. 20, 2022
Int. Cl. H01M 10/0562 (2010.01); H01M 4/131 (2010.01); H01M 4/36 (2006.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)
CPC H01M 10/0562 (2013.01) [H01M 4/131 (2013.01); H01M 4/364 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 4/62 (2013.01); H01M 10/0525 (2013.01); H01M 2004/027 (2013.01); H01M 2004/028 (2013.01); H01M 2300/0065 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An all-solid-state secondary battery comprising:
a laminated body in which
a plurality of positive electrode layers, each positive electrode layer including a positive electrode current collector layer and a positive electrode active material layer, and
a plurality of negative electrode layers, each negative electrode layer including a negative electrode current collector layer and a negative electrode active material layer;
are laminated with a plurality of solid electrolyte layers each containing a solid electrolyte interposed between each positive electrode layer and each negative electrode layer; and
a plurality of margin layers each of which is disposed side by side with each of the positive electrode layers and the negative electrode layers and contains a solid electrolyte,
wherein the laminated body includes metal particles having an oxide film in at least any layer of the positive electrode active material layers, the negative electrode active material layers, the solid electrolyte layers, and the margin layers, and
wherein each margin layer of the plurality of margin layers is located between two solid electrolyte layers and contiguous therewith, in a lamination direction,
wherein each of the metal particles having an oxide film includes a metal particle and the oxide film, and the metal particle is covered with the oxide film,
wherein an average thickness of the oxide film is 10% or less of an average particle diameter of the metal particles having an oxide film and the average thickness of the oxide film is within a range of 0.001 μm to 2 μm, and
wherein the metal particles having an oxide film are present in all of the solid electrolyte layers and the margin layers.