US 12,243,979 B2
All-solid battery and method of preparing the same
Wonseok Chang, Seoul (KR); Jusik Kim, Hwaseong-si (KR); Gabin Yoon, Seoul (KR); and Myungjin Lee, Seoul (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Jul. 14, 2021, as Appl. No. 17/375,162.
Claims priority of application No. 10-2020-0155430 (KR), filed on Nov. 19, 2020.
Prior Publication US 2022/0158226 A1, May 19, 2022
Int. Cl. H01M 10/0562 (2010.01); H01M 4/02 (2006.01); H01M 4/04 (2006.01); H01M 4/131 (2010.01); H01M 4/1391 (2010.01); H01M 4/36 (2006.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 4/583 (2010.01); H01M 4/66 (2006.01); H01M 4/80 (2006.01); H01M 10/0525 (2010.01)
CPC H01M 10/0562 (2013.01) [H01M 4/0404 (2013.01); H01M 4/0407 (2013.01); H01M 4/131 (2013.01); H01M 4/1391 (2013.01); H01M 4/366 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 4/583 (2013.01); H01M 4/662 (2013.01); H01M 4/667 (2013.01); H01M 4/80 (2013.01); H01M 10/0525 (2013.01); H01M 2004/021 (2013.01); H01M 2300/0071 (2013.01)] 25 Claims
OG exemplary drawing
 
1. An all-solid battery comprising:
a cathode layer comprising a cathode active material layer;
an anode layer; and
a solid electrolyte layer disposed between the cathode layer and the anode layer and comprising a solid electrolyte,
wherein the anode layer comprises
a porous anode current collector,
a first anode active material layer comprising a first metal and a carbonaceous anode active material disposed on the porous anode current collector, and
a conformal coating layer consisting of a second metal disposed on the first anode active material layer, wherein the second metal is silver, copper, iron, magnesium, or a combination thereof,
wherein the conformal coating layer is between the first anode active material layer and the solid electrolyte layer, and
a surface of the solid electrolyte layer proximate to the conformal coating layer has a surface roughness of about 2 micrometers or less,
wherein a porosity of the conformal coating layer is in a range of about 1 percent to about 20 percent, and a pore size of the conformal coating layer is about 20 micrometers or less, and a thickness of the conformal coating layer is about 200 nanometers of less, and
wherein the porous anode current collector, the first anode active material layer, the conformal coating layer, and regions therebetween are Li-free regions, which are free of lithium in an initial state or a state after the all-solid battery is discharged.