US 11,742,478 B2
All-solid secondary battery and method of preparing the same
Sewon Kim, Suwon-si (KR); Sungkyun Jung, Suwon-si (KR); Naoki Suzuki, Yokohama (JP); Satoshi Fujiki, Yokohama (JP); Tomoyuki Tsujimura, Yokohama (JP); Hyeokjo Gwon, Hwaseong-si (KR); and Jusik Kim, Hwaseong-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Gyeonggi-do (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Oct. 28, 2022, as Appl. No. 17/976,316.
Application 17/976,316 is a continuation of application No. 17/093,989, filed on Nov. 10, 2020, granted, now 11,605,812.
Claims priority of application No. 10-2020-0029166 (KR), filed on Mar. 9, 2020.
Prior Publication US 2023/0055212 A1, Feb. 23, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 4/00 (2006.01); H01M 4/36 (2006.01); H01M 10/052 (2010.01); H01M 4/40 (2006.01); H01M 4/38 (2006.01); H01M 4/04 (2006.01); H01M 4/133 (2010.01); H01M 4/134 (2010.01); H01M 4/1393 (2010.01); H01M 4/1395 (2010.01); H01M 4/587 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/366 (2013.01) [H01M 4/043 (2013.01); H01M 4/133 (2013.01); H01M 4/134 (2013.01); H01M 4/1393 (2013.01); H01M 4/1395 (2013.01); H01M 4/382 (2013.01); H01M 4/405 (2013.01); H01M 4/587 (2013.01); H01M 10/052 (2013.01); H01M 2004/027 (2013.01); H01M 2300/0071 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An all-solid secondary battery, comprising:
a cathode;
an anode; and
a solid electrolyte layer disposed between the cathode and the anode,
wherein the anode comprises
an anode current collector;
a first anode active material layer in contact with the anode current collector and comprising a first metal;
a second anode active material layer disposed between the first anode active material layer and the solid electrolyte layer and comprising a carbon-containing active material; and
a contact layer between the second anode active material layer and the solid electrolyte layer,
wherein the contact layer comprises a second metal, and has a thickness less than a thickness of the first anode active material layer.