US 12,308,385 B2
All-solid secondary battery and method of preparing same
Junhwan Ku, Seongnam-si (KR); and Toshinori Sugimoto, Hwaseong-si (KR)
Assigned to SAMSUNG SDI CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung SDI Co., Ltd., Yongin-si (KR)
Filed on Oct. 26, 2023, as Appl. No. 18/495,034.
Application 18/495,034 is a continuation of application No. 16/927,097, filed on Jul. 13, 2020, granted, now 11,923,502.
Claims priority of application No. 10-2020-0012188 (KR), filed on Jan. 31, 2020.
Prior Publication US 2024/0055655 A1, Feb. 15, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 10/0562 (2010.01); H01M 4/40 (2006.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 4/62 (2006.01); H01M 4/66 (2006.01)
CPC H01M 10/0562 (2013.01) [H01M 4/405 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 4/623 (2013.01); H01M 4/661 (2013.01); H01M 4/663 (2013.01); H01M 2300/008 (2013.01)] 34 Claims
 
1. An all-solid secondary battery comprising:
a solid electrolyte layer disposed between an anode layer and a cathode layer, wherein the solid electrolyte layer comprises
a first solid electrolyte layer comprising a first solid electrolyte, and
a second solid electrolyte layer comprising a second solid electrolyte, wherein
the first solid electrolyte layer is disposed proximate to the anode layer,
the second solid electrolyte layer is disposed proximate to the cathode layer, and
a lithium ion conductivity of the first solid electrolyte and the second solid electrolyte is different.